JPH09269997A - Device and method for preparing and displaying road map and airport ground map and airport ground - Google Patents

Abstract

PROBLEM TO BE SOLVED: To speedily prepare an airport ground map by automatically generating a crossing when the taxiway of an airport ground is inputted. SOLUTION: The position data of the taxiway inputted through an input device 20 are supplied through a position information input part 22 to an equipment retrieval part 24. The equipment retrieval part 24 retrieves an equipment data base and retrieves the existent taxiway positioned near the inputted taxiway. The intersection of the discovered taxiway and the new taxiway is calculated by an intersection calculation part 26. A center line connection processing part 30 prepares a circular arc connecting respective center lines so as to constitute the crossing with the calculated intersection as a center. Then, such a circular arc is registered in the equipment data base 28 as the component of the crossing. This registration is performed at an equipment information storage part 32. Thus, since the taxiways are automatically linked with each other by automatically preparing the crossing, the airport ground map can be easily prepared by simple operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road map creating device. Especially when the road is an airport taxiway,
That is, the present invention relates to an airport plane map creating apparatus and method suitable for creating an airport plane map. Further, the present invention relates to a display method capable of realistically displaying these road maps and airport plane maps.

[0002]

2. Description of the Related Art An apparatus and method for creating a road map are
Various things are known now. When defining an intersection of roads using a conventional road map creation tool, it is common to first draw the shape of the intersection and then give the attribute of the intersection to this shape to define the intersection. It is believed that there is. The state of such a drawing is shown in FIG. 43, for example. As shown in the figure,
When there is a road 10, a new road 12 intersecting with the road 10 is drawn as a rectangular figure by the operation of the drawing 1. Since an actual road has rounded corners at intersections, this roundedness is added in the drawing 2 and the drawing 3 in FIG. Then, by performing an intersection creating operation for assigning an attribute indicating that it is an intersection to the intersection thus formed as a figure, it is possible to assign that a predetermined area is an intersection as an attribute.

In the road map creating apparatus, one of the most important points is considered to be the part for creating and displaying the intersection. Therefore, various types of road map creation devices have been proposed that have been devised to create intersections. For example, Japanese Unexamined Patent Publication No. 5-89221 discloses a graphic creation device capable of easily drawing the shape of an intersection. According to the graphic creation device described here, a graphic consisting of a line having a certain width and having an intersection represented by a road crossing or a grade separation can be accurately drawn by a simple operation. Is.

Further, Japanese Patent Application Laid-Open No. 5-314237 discloses a figure creating device which is also devised in creating and displaying an intersection. According to the apparatus described here, the imaging data creation unit 15 that creates imaging data according to the state of the intersection of each road figure (representing a road) is provided. There is described a graphic creation device capable of accurately displaying and printing the course condition of a road based on the road data.

[0005]

As described above, in the geographical road map creation tool, various measures have been taken to facilitate the creation and display of intersections.

[0006] However, in such a conventional road map creating apparatus, since the road information is basically represented only by the center line and the intersections thereof, the width of the road and the road like the airport plane map can be used. When the radius of curvature at the intersection has an extremely important meaning, there is a problem that the conventional road map creating device cannot make detailed settings. In other words, conventional road map creation tools are used to represent roads only with points and lines, and for applications where the width of each taxiway, the radius of curvature at an intersection, etc. must be accurately defined, as in an airport map. If so, there is a problem that it takes time to create a shape at each taxiway and an intersection and to further define attributes for identifying each taxiway, and since these definitions are all manually performed, an error is likely to occur. .

This airport plane map is a base map for displaying at which taxiway each airplane arriving and arriving at the airport is currently located, and the display needs to be accurate. Further, it is desirable that the data structure of the airport surface map is such that, when the taxiway or the runway is changed, the changed portion is automatically changed according to the correction of the changed portion. However, as mentioned above,
In a conventional road map creation device, road information is merely a figure and attribute information as an intersection is given to the area where the figure is located, which is not always appropriate for creating an airport surface map. There wasn't.

The present invention has been made in view of the above problems, and its purpose is to be able to freely design the width of a road, the radius of curvature at an intersection, and the like, and to automatically recognize that the intersection is an intersection. An attribute plane information is automatically set, and an airport plane map creation device suitable for creating an airport plane map is provided.

Still another object of the present invention is to provide a display device capable of displaying a realistic image of a created airport surface map.

[0010]

In order to solve the above-mentioned problems, a first aspect of the present invention is a road map creating apparatus which creates a road map by expressing a road by its center line. Input means for inputting the data of the center line of the road to be added, and in the vicinity of the center line of the input new road in the road map to be created,
Search means for searching whether or not the center line of the existing road provided in the road map exists, and when the center line of the existing road existing in the vicinity is found by the search means,
An intersection creating means for providing an intersection between the both roads based on a positional relationship between the center line of the road and the center line of the existing road that have been input, and the intersection creating means,
An arc calculating means for calculating an arc that contacts both the center line of the existing road and the center line of the newly input road, and an intersection that registers the arc as the center line of the intersection in the road map. A road map creation device comprising: a registration unit.

According to the first aspect of the present invention, when a road to be newly created is near an existing road, an intersection with this existing road is automatically created by the intersection creating means, so that the road map is created. It can be created quickly.

Incidentally, it is preferable that the operator designates in advance, by a parameter, how close the intersection is to be created. For example, in the embodiment described later, the parameter input unit 44 has registered in advance a parameter serving as a reference for whether or not it is in the vicinity (see FIG. 1 described later).

As the input means, a pointing device such as a mouse or a tablet is preferable, but it is also preferable to input the coordinates of the center line data itself with a keyboard or the like.

Further, it is preferable that the search means is specifically composed of a CPU of a computer and a search program executed by the CPU. Then, this search program searches the existing road existing in the vicinity of the input new road from the storage means in which the data of the center line of the road map is registered.

The arc calculating means is also a computer CP.
It is preferably composed of U and an arc calculation program executed by its CPU. The radius of this arc is also
It is desirable to store it in the parameter input unit 44 in advance (see FIG. 1 described later).

In a second aspect of the present invention, in order to solve the above-mentioned problems, the intersection calculating means sets a predetermined distance value between the center line of the existing road and the center line of the newly input road. If it is within the range of, the correction means for bringing the position of the center line of the newly input road closer to the position of the center line of the existing road is included. It is a device.

Even if the coordinate data or the like for designating a new road input by such a configuration is not accurate, if the position of the existing road is accurate, the position of the existing road is determined. Since the new road is standardized by the correction means, an accurate road map can be created.

In a third aspect of the present invention, in order to solve the above-mentioned problems, the intersection creating means obtains an intersection between the center line of the existing road and the center line of the newly input road. And the midpoint of the center line of the existing road is located near the end point of the center line of the newly input road, the center line of the existing road is divided at the intersection. With respect to the dividing means registered in the road map as two centerlines, the two centerlines divided by the dividing means, and the centerline of the newly input road, these centerlines Second arc calculating means for calculating, for each set, an arc that is in contact with two center lines of each set for any two sets of Is a road map creation device.

According to the third aspect of the present invention, when a new intersection is created, the existing road is divided and the intersection is constructed so as to be connected to the divided road. for that reason,
It is possible to accurately manage the configuration of each road connecting to the intersection.

In a fourth aspect of the present invention, in order to solve the above problems, the intersection creating means obtains an intersection between the center line of the existing road and the center line of the newly input road. And the midpoint of the newly input center line of the road is located in the vicinity of the end point of the center line of the existing road, the center line of the newly input road is set at the intersection. With respect to the dividing means for dividing and registering in the road map as two centerlines, the two centerlines divided by the dividing means, and the centerline of the existing road, these centerlines Second arc calculating means for calculating, for each set, an arc that is in contact with two center lines of each set for any two sets of Is a road map creation device of the present invention.

The fourth aspect of the present invention is, contrary to the third aspect of the present invention, an invention in the case where a newly created road is divided, and is essentially the same as the third aspect of the present invention. Exerts the action of.

In order to solve the above-mentioned problems, a fifth aspect of the present invention is a means for managing the road map for each predetermined zone area, wherein roads included in each zone area are provided for each zone area. A zone management unit that stores the first road, the search unit including the newly input road;
Zone search means for searching the road included in the first and second zone areas stored in the zone management means with respect to the zone area and, if necessary, the second zone area adjacent to the first zone area. The road map creation device according to the first or second or third or fourth aspect of the present invention is characterized by including:

In the fifth aspect of the present invention, since the zone search means divides the road map into zone areas and performs the search, the search can be performed efficiently.

In order to solve the above-mentioned problems, a sixth aspect of the present invention provides a road map display device for creating a road map by expressing a road by its center line and displaying the created road map. An offset line creating means for creating a left offset line and a right offset line by translating the center line of the left and right in parallel by half the width of the road, and a road expressing the road width by displaying the left offset line and the right offset line. A road display means with a width capable of displaying a map, and the offset line of one road connected to the same intersection,
Offset arc creating means for creating an offset arc that is in contact with both the offset lines of the other roads connected to the same intersection, and an arc that is concentric with the offset arc and is separated from the offset arc by the road width. A widthwise offset arc creating means for creating a widthwise offset arc, and a widthwise intersection display means for displaying the offset arc and the widthwise offset arc and for displaying a road map expressing the width of the intersection. It is a characteristic road map display device.

According to the sixth aspect of the present invention, since the offset line creating means and the offset arc creating means calculate the offset line of the center line of the road and the offset arc in contact with this offset line, the road can be easily and accurately obtained. It is possible to display a highly realistic road map in which the width is displayed.

In a seventh aspect of the present invention, in order to solve the above-mentioned problems, the width-added offset arc creating means has a smaller road width among road widths of roads that are the basis of an offset line with which the offset arc is in contact. A road map display device according to a sixth aspect of the present invention is characterized in that an offset circular arc with a width that is separated from the offset circular arc by the width is created.

In the seventh aspect of the invention, the offset arc with width has the same width as the width of the smaller road width. Therefore, according to the present invention, it is possible to display a smooth intersection.

In order to solve the above problems, an eighth aspect of the present invention is an airport plane map creating apparatus for creating an airport plane map by expressing a taxiway with its center line, and a guidance newly added to the airport plane map. The input means for inputting the data of the center line of the road and the existing guidance provided in the airport plane map near the center line of the newly entered taxiway in the airport plane map to be created. Searching means for searching whether or not a center line of the road exists, and when the center line of an existing taxiway existing in the vicinity is found by the searching means, the input center line of the taxiway and the existing An intersection creating means for providing an intersection between the two taxiways based on a positional relationship with the centerline of the taxiway, wherein the intersection creating means newly inputs the centerline of the existing taxiway and the new input Of the taxiway An airport plane map creating device comprising: an arc computing unit that computes an arc that is in contact with both the core line and an intersection registration unit that registers the arc as a center line of the intersection in the airport plane map. Is.

An eighth aspect of the present invention is an invention in which the road map creating apparatus of the first aspect of the present invention is applied to an airport plane map creating apparatus. In the present invention, an intersection consisting of arcs having a predetermined radius of curvature is automatically created. Such features are significant even on general roads, but especially when applied to airport surface maps when the radius of curvature of taxiways is strictly defined because airplanes move like airports. By doing so, it is possible to bring out the feature more.
Also in the embodiments described later, from such a viewpoint,
An embodiment of an airport surface map creation device is described.

In the present invention, the term "taxiway" broadly indicates a place where an airplane or the like moves, and is a concept including a runway.

In a ninth aspect of the present invention, in order to solve the above problems, the intersection calculating means sets a value of a distance between the center line of the existing taxiway and the center line of the newly input taxiway. When the present invention is within a predetermined range, a correction means for bringing the position of the center line of the newly input taxiway closer to the position of the center line of the existing taxiway is included. This is an airport surface map creation device.

The ninth aspect of the present invention is an application of the second aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the second aspect of the present invention.

[0033] In a tenth aspect of the present invention, in order to solve the above-mentioned problems, the intersection creating means is such that the midpoint of the center line of the existing taxiway is the end point of the center line of the newly input taxiway. Intersection position calculating means for obtaining an intersection between the center line of the existing taxiway and the center line of the newly input taxiway when located near the center of the existing taxiway at the intersection. A dividing unit that divides the line and registers it in the airport plane map as two center lines, two center lines divided by the dividing unit, and a center line of the newly input taxiway. On the other hand, for any two groups of these center lines, second arc calculating means for calculating, for each group, the arcs in contact with the two center lines of each group. The airport surface map creation device according to claim 8 or 9.

The tenth aspect of the present invention is an application of the third aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the third aspect of the present invention.

In order to solve the above-mentioned problems, the eleventh aspect of the present invention is such that, in the intersection creating means, the midpoint of the newly input center line of the taxiway is the end point of the center line of the existing taxiway. Intersection position calculating means for obtaining an intersection point between the center line of the existing taxiway and the center line of the newly input taxiway when located near the intersection, and the newly input guidance at the intersection point. For dividing means for dividing the center line of the road into two center lines and registering them in the airport plane map, two center lines divided by the dividing means, and the center line of the existing taxiway. A second arc calculating means for calculating, for each of the two sets of center lines, an arc in contact with the two center lines of each set. The eighth aspect of the present invention is the airport surface map creation device of the present invention.

The eleventh aspect of the present invention is an application of the fourth aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the fourth aspect of the present invention.

In order to solve the above-mentioned problems, the twelfth aspect of the present invention is a means for managing the airport surface map for each predetermined zone area, wherein taxiways included in each zone area are the zone areas. And a zone managing unit for storing each zone, wherein the searching unit relates to the first zone region including the newly input taxiway and the second zone region adjacent to the first zone region as necessary. 8th or 9th or 10th or 11th, comprising zone search means for searching for the taxiway included in the first and second zone areas stored in the zone management means.
Is an airport surface map creation device of the present invention.

The twelfth aspect of the present invention is an application of the fifth aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the fifth aspect of the present invention.

In order to solve the above problems, the thirteenth invention creates an airport surface map by expressing a taxiway with its center line and displays the created airport surface map. In, an offset line creating means for creating a left offset line and a right offset line by translating the center line of the taxiway to the left and right by half the width of the taxiway width, and displaying the left offset line and the right offset line,
Width taxiway display means capable of displaying an airport plane map expressing taxiway width, the offset line of one road connecting to the same intersection, and the offset of another road connecting to the same intersection An offset arc creating means for creating an offset arc that is in contact with both the line and a width offset arc creating a width offset arc that is concentric with the offset arc and is separated from the offset arc by the guideway width An airport plane map display device comprising: means and a widthwise intersection display means for displaying the offset arc and the offset circle with width, and displaying an airport plane map expressing an intersection width.

The 13th aspect of the present invention is an application of the 6th aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the 6th aspect of the present invention. That is, the first
According to the present invention of 3, the offset line creating means and the offset arc creating means calculate the offset line of the center line of the taxiway and the offset arc in contact with this offset line, so that the taxiway width can be easily displayed. It is possible to display a highly realistic airport surface map.

According to a fourteenth aspect of the present invention, in order to solve the above-mentioned problems, the width-added offset arc creating means has a guideline width of a guideline of a centerline which is a basis of an offset line with which the offset arc is in contact. The airport plane map display device according to the thirteenth aspect of the present invention is characterized in that an offset arc with a width is created which is separated from the offset arc by the smaller guideway width.

The 14th aspect of the present invention is an application of the 7th aspect of the present invention to an airport plane map creating apparatus, and its basic operation is the same as that of the 7th aspect of the present invention.

In order to solve the above-mentioned problems, the fifteenth aspect of the present invention is a road map creating method for creating a road map by expressing a road by its center line. In the input step of inputting data and in the road map to be created, whether or not the center line of the existing road provided in the road map exists near the center line of the input new road. And a search step for searching or if a center line of an existing road existing in the vicinity is found in the search step,
An intersection creating step of providing an intersection between the two roads based on a positional relationship between the entered center line of the road and the center line of the existing road; An arc calculation step of calculating an arc that contacts both the center line of the road and the newly input center line of the road, and an intersection registration step of registering the arc as the center line of the intersection in the road map. A road map creating method characterized by including ,.

The fifteenth aspect of the present invention expresses the first aspect of the present invention as a method, and its operation is basically the same as that of the first aspect of the present invention.

In order to solve the above problems, the sixteenth aspect of the present invention is such that, in the intersection calculating step, a value of a distance between the center line of the existing road and the center line of the newly input road is predetermined. If within the range, a correction step of bringing the position of the center line of the newly input road closer to the position of the center line of the existing road is included. It is a creation method.

The sixteenth aspect of the present invention expresses the second aspect of the present invention as a method, and its operation is basically the same as that of the second aspect of the present invention.

In order to solve the above-mentioned problems, the seventeenth aspect of the present invention is such that, in the intersection creating step, an intersection calculating step for obtaining an intersection between the center line of the existing road and the center line of the newly input road. And the midpoint of the center line of the existing road is located near the end point of the center line of the newly input road, the center line of the existing road is divided at the intersection. For the dividing step of registering in the road map as two centerlines, the two centerlines divided in the dividing step, and the centerline of the newly input road, these centerlines A second arc calculating step of calculating, for each set, an arc in contact with two center lines of each set for any two sets of Is a road map creating method of the present invention.

The seventeenth aspect of the present invention expresses the third aspect of the present invention as a method, and its operation is basically the same as that of the third aspect of the present invention.

In order to solve the above problems, the eighteenth aspect of the present invention is an intersection calculating step, wherein the intersection creating step obtains an intersection between the center line of the existing road and the center line of the newly input road. And the midpoint of the newly input center line of the road is located in the vicinity of the end point of the center line of the existing road, the center line of the newly input road is set at the intersection. With respect to a dividing step of dividing and registering in the road map as two centerlines, two centerlines divided in the dividing step, and a centerline of the existing road, these centerlines A second arc calculating step of calculating, for each set, an arc in contact with two center lines of each set for any two sets of Is a road map creating method of the present invention.

The eighteenth aspect of the present invention expresses the fourth aspect of the present invention as a method, and its operation is basically the same as that of the fourth aspect of the present invention.

In order to solve the above-mentioned problems, the 19th aspect of the present invention is a step of managing the road map for each predetermined zone area, wherein roads included in each zone area are set for each zone area. A zone management step of storing in a storage means, wherein the searching step relates to a first zone area including the newly input road and, if necessary, a second zone area adjacent to the first zone area. A zone search step of searching the roads included in the first and second zone areas stored in the storage means in the zone management step, the fifteenth, sixteenth, seventeenth, or fifteenth aspect. 18 is a road map creating method of the present invention.

The nineteenth aspect of the present invention expresses the fifth aspect of the present invention as a method, and its operation is basically the same as that of the fifth aspect of the present invention.

In order to solve the above problems, the twentieth aspect of the present invention provides a road map display method for creating a road map by representing a road by its center line and displaying the created road map. Offset line creating step of creating a left offset line and a right offset line by translating the center line of the left and right in parallel by half the width of the road, and displaying the left offset line and the right offset line to display the road width. Create an offset arc that touches both the road display step with width that can display a map, the offset line of one road connected to the same intersection, and the offset line of another road connected to the same intersection Offset arc creating step, and a width that is concentric with the offset arc and is separated from the offset arc by the road width And width with the offset arc generating step of generating offset arc, to display the offset arcuate and offset the arc with the width, and the width with intersection display step of displaying the road map intersection width is expressed,
It is a road map display method characterized by including.

The twentieth aspect of the present invention expresses the sixth aspect of the present invention as a method, and its operation is basically the same as that of the sixth aspect of the present invention.

In a twenty-first aspect of the present invention, in order to solve the above-mentioned problems, in the step of creating an offset arc with a width, the smaller one of the road widths of the roads which is the basis of the offset line with which the offset arc touches 21. The road map display method according to claim 20, wherein an offset circular arc with a width separated from the offset circular arc by a width is created.

The 21st aspect of the present invention expresses the 7th aspect of the present invention as a method, and its operation is basically the same as that of the 7th aspect of the present invention.

In order to solve the above problems, the 22nd aspect of the present invention provides an airport plane map creating method for creating an airport plane map by expressing a taxiway with its center line, and a guidance to be newly added to the airport plane map. In the input step of inputting the data of the center line of the route, and in the airport plane map to be created, existing guidance provided in the airport plane map near the center line of the newly entered taxiway A search step for searching whether or not a center line of the road exists, and if a center line of an existing taxiway existing in the vicinity is found in the search step, the entire center line of the taxiway that has been input, An intersection creation step of providing an intersection between the two taxiways based on a positional relationship with the centerline of the existing taxiway, the intersection creation step comprising: a centerline of the existing taxiway; An arc calculation step of calculating an arc in contact with both the center line of the valley input taxiway,
An intersection registration step of registering the arc as a center line of the intersection in the airport surface map, the airport surface map creating method.

The 22nd aspect of the present invention expresses the 8th aspect of the present invention as a method, and its operation is basically the same as that of the 8th aspect of the present invention.

In a twenty-third aspect of the present invention, in order to solve the above-mentioned problems, the intersection calculation step is a value of a distance between a center line of the existing taxiway and the center line of the newly input taxiway. Is within a predetermined range, a correction step of bringing the position of the center line of the newly input taxiway closer to the position of the center line of the existing taxiway is included. It is an airport surface map creation method of the invention.

The twenty-third aspect of the present invention expresses the ninth aspect of the present invention as a method, and its operation is basically the same as that of the ninth aspect of the present invention.

In a twenty-fourth aspect of the present invention, in order to solve the above problems, in the intersection creating step, the midpoint of the center line of the existing taxiway is the end point of the center line of the newly input taxiway. When located in the vicinity of, the intersection calculation step for obtaining the intersection of the center line of the existing taxiway and the center line of the newly input taxiway, the center of the existing taxiway at the intersection A dividing step of dividing the line into two center lines and registering the two center lines in the airport plane map, two center lines divided in the dividing step, and a newly input center line of the taxiway. On the other hand, for any two sets of these center lines, a second arc calculating step of calculating, for each set, an arc in contact with the two center lines of each set. The 22nd or 23rd airport surface map of the present invention It is a method.

The twenty-fourth aspect of the present invention expresses the tenth aspect of the present invention as a method, and its operation is basically the same as that of the tenth aspect of the present invention.

A twenty-fifth aspect of the present invention, in order to solve the above-mentioned problems, in the intersection creating step, the midpoint of the newly input center line of the taxiway is the end point of the center line of the existing taxiway. An intersection point calculation step for obtaining an intersection point between the center line of the existing taxiway and the center line of the newly input taxiway when the vehicle is located in the vicinity of the guide line newly input at the intersection point. For the dividing step of dividing the center line of the road and registering it in the airport plane map as two center lines, the two center lines divided in the dividing step, and the center line of the existing taxiway. And a second arc calculating step of calculating, for each of the two sets of center lines, an arc in contact with the two center lines of each set, for each set. Creating the airport surface map of the 22nd or 23rd invention It is the law.

The 25th aspect of the present invention expresses the 11th aspect of the present invention as a method, and its operation is basically the same as that of the 11th aspect of the present invention.

In order to solve the above-mentioned problems, the twenty-sixth aspect of the present invention is a step of managing the airport plane map for each predetermined zone area, wherein taxiways included in each zone area are set to the zone area. And a zone management step of storing the zone in each of the storage means, and the searching step includes a first zone area including the newly input taxiway, and a second zone adjacent to the first zone area as necessary. A zone search step of searching for the taxiway included in the first and second zone areas stored in the storage means in the zone management step with respect to the zone area; It is an airport surface map display method according to the 24th or 25th aspect of the present invention.

The 26th aspect of the present invention expresses the 12th aspect of the present invention as a method, and its operation is basically the same as that of the 12th aspect of the present invention.

In order to solve the above problems, the 27th aspect of the present invention creates an airport surface map by expressing a taxiway with its center line and displays the created airport surface map. In, an offset line creating step of creating a left offset line and a right offset line by translating the center line of the taxiway to the left and right by half the width of the taxiway width, and displaying the left offset line and the right offset line, Width taxiway display step capable of displaying an airport surface map in which a road width is expressed, the offset line of one road connected to the same intersection, and the offset line of another road connected to the same intersection An offset arc creation step that creates an offset arc that touches both
A step of creating an offset arc with a width that is concentric with the offset arc, and creates an offset arc with a width that is separated from the offset arc by a guideway width, displaying the offset arc and the offset arc with a width, and an intersection And an intersection display step with a width for displaying an airport surface map in which the width is expressed, and a method for displaying the airport surface map.

The twenty-seventh aspect of the present invention expresses the thirteenth aspect of the present invention as a method, and its operation is basically the same as that of the thirteenth aspect of the present invention.

In a twenty-eighth aspect of the present invention, in order to solve the above-mentioned problems, in the step of creating an offset arc with a width, among the taxiway widths of a taxiway of a centerline which is a basis of an offset line with which the offset arc touches The 27th airport plane map display method of the present invention is characterized in that a widthwise offset arc is created which is separated from the offset arc by the smaller taxiway width.

The twenty-eighth aspect of the present invention expresses the fourteenth aspect of the present invention as a method, and its operation is basically the same as that of the fourteenth aspect of the present invention.

[0071]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

Overall Outline FIG. 1 shows a functional block diagram of an airport plane map creating apparatus which is a preferred embodiment of the present invention. Although various functional blocks are shown in FIG. 1, the input device and the display device are configured by hardware, and various databases and storage units are configured on a hard disk, for example. The search unit and calculation unit that perform each data process are configured by software that performs these processes.

As shown in the figure, in the airport plane map creating apparatus, the operator first inputs the coordinates of the airport plane map to be created using the input device. This input device 20
Is used for selecting various functions for drawing and for inputting predetermined coordinates. This input device 20
Various pointing devices such as a mouse and a tablet can be used. The coordinate data input from the input device 20 is supplied to the position information input unit 22. The coordinate data input to the position information input unit 22 is transmitted to the equipment search unit 24, and the equipment search unit 24 inspects whether or not a certain equipment exists near the coordinates.
This inspection is performed by searching various facilities registered in the current airport plane map, but in order to improve the search efficiency, zone data is used in this embodiment. The zone data is data obtained by dividing the airport surface map into a predetermined number of zones and extracting only the equipment included in the zones. Therefore, the equipment search unit 24 detects a zone including the input coordinate data and searches only the equipment included in the zone. This can significantly reduce your search target,
It is possible to search for equipment existing in the vicinity at high speed. This zone data is formed as a part of the equipment database 28.

The zone data will be described later in detail.

Next, the equipment existing in the vicinity of the coordinate position data retrieved by the equipment retrieval unit 24 and the input device 20.
The position information input from is transmitted to the intersection calculation unit 26 together. Then, by obtaining the intersection between the existing equipment and the newly input position information, the new intersection is automatically recognized. In this case, the existing equipment is equipment that forms an intersection such as a taxiway or a runway, and is a calculation target in the intersection calculation unit 26. On the other hand, in the case of facilities such as buildings and parking lots, intersections for forming intersections are not calculated. The intersection calculation unit 26 is supplied with information which is stored in the parameter storage unit 46 and serves as a reference when determining an intersection.

The characteristic feature of the present embodiment is that when an operator draws a partial line segment for drawing a predetermined taxiway or runway through the input device, the position information is displayed. Is input through the position information input unit 22, and the intersection calculation unit 26 automatically obtains the intersection with the existing equipment. In this way, by automatically obtaining the intersection, it becomes possible to automatically form the intersection centered on the intersection.

Information on the intersection calculated by the intersection calculator 26 is supplied to the center line connection processor 30. The center line connection processing unit 30 performs a process of connecting the center lines of the taxiways forming the intersection with a curve having a predetermined radius of curvature as described later. Creating an arc having this predetermined radius of curvature is called "rounding" in the present embodiment. For the centerline connection processing unit 30, the parameter storage unit 46
The pre-stored rounding radius is supplied from the parameter storage unit 46, and this predetermined rounding radius (curvature radius) is used as a default value for creating an arc in the “rounding” process. Used.

In this way, an airport surface map is created by drawing each taxiway that constitutes an intersection and the rounded-out portion (arc) that connects each taxiway. The intersection created in this way and the newly provided taxiway (or runway) are newly registered in the equipment database 28 as new equipment by the equipment information storage unit 32. Then, whether or not the equipment is in the vicinity of the position information input using the input device 20 again becomes a target when the equipment search unit 24 searches.

The display processing unit 34 is a functional unit for displaying the rounded portions (arcs) connecting the respective guideways and the guideways thus created on the display for the operator. What is characteristic of the airport plane map creating apparatus in the present embodiment is that the display processing unit 34 assigns a predetermined line width and a display attribute to the rounding unit defined as the center line and the circular arc. This makes it possible to display the actual airport surface with high reality. That is, only information such as the center lines of taxiways and runways and the set of taxiways that make up intersections are stored in the equipment database, and display with given line widths and display attributes. Is performed in the display processing unit 34. Note that the display processing unit 34 reads out values such as default line width and display attributes from the parameter storage unit 46, and uses these values when displaying. The display of the airport surface map by the display processing unit 34 is performed on the display device 36.

When a function indicating the end of mesh generation or map generation is selected from the input device 20 instead of the position information, the fact that this function is selected is sent to the mesh data generation unit 38. Mesh data generator 3
8 refers to the contents of the equipment database 28,
The mesh data 40 is created. Here, the mesh data is two-dimensional grid-like data that composes the airport plane map, and is data indicating which equipment each one of the grids belongs to. By storing and holding such data, it is possible to quickly determine, for an arbitrary point, what equipment the point is. It is preferable that both the mesh data 40 and the equipment database 28 be stored in a storage device such as a hard disk.

The mesh data will be described in detail later.

In the airport plane map creating apparatus according to the present embodiment, in addition to the input device 20 for inputting position information which is coordinate data, for example, when determining the presence or absence of an intersection when calculating an intersection. An input device 42 such as a keyboard for previously inputting a reference value or the like is provided.
The input device 42 is preferably a keyboard for inputting numerical data, but it is also preferable that the input device 42 is configured to select a predetermined value with a pointing device such as a mouse. The reference value for the intersection determination, the default value for the rounding determination, and the like input from the input device 42 are input via the parameter input unit 44. Then, the input data is stored in the parameter storage unit 46 described above. The various parameters stored in the parameter storage unit 46 are used in the intersection calculation unit 26, the center line connection processing unit 30 and the like as described above. Further, it is preferable that the parameter storage unit 46 is also configured on the hard disk like the facility database 28 and the like.

As described above, the characteristic feature of this embodiment is that the facility database 28 stores the facilities constituting the airport.
When the location information such as the start point and the end point of a taxiway or runway is newly entered, the equipment that intersects with the new runway or taxiway is searched and the intersection point is calculated. It is possible to automatically form an intersection or the like by calculating in the unit 26. As a result, the airport plane map creating apparatus according to the present embodiment can easily and accurately create the airport plane map.

The map of the airport surface map creation device of the present embodiment
By the way, in the airport surface map creation device according to the present embodiment, not only is the intersection of the newly created taxiway and the existing taxiway automatically created, but various graphical It can be processed. An example of such graphic processing is shown in FIG.
Are shown in FIG. FIG. 2A shows how the above-described intersection is automatically generated. When a start point s and an end point e are designated by using a pointing device such as a mouse so as to intersect with an existing taxiway or runway, an intersection is formed based on the start point s and the end point e, and a guidance having a constant line width with the start point and the end point as a center line. The runway or runway is automatically displayed on the screen.

Further, FIG. 2B shows an example in which the taxiway can be easily deleted. Since each taxiway is managed as a unit between intersections, the taxiway can be deleted by selecting the taxiway and deleting it at the same time.

Regarding the generation of these intersections and the automatic deletion of the intersections, the detailed algorithm will be described later.

Further, it is also possible to copy the intersection as shown in FIG. In this way, since the intersection having the same structure as the existing intersection can be copied, it becomes easy to input the intersection data, and the airport plane map creation device that can easily create the airport plane map is obtained.

FIG. 2D shows how the intersection is moved. By supporting these functions such as copying and moving, a highly convenient airport surface map creation device is provided.

FIG. 3 shows an explanatory diagram regarding the types of each facility that can be registered in the facility database 28 of the airport surface map creating apparatus according to this embodiment. As shown here, the airport plane map includes taxiways and runways. Both the taxiway and the runway are composed of a center line and a wide line segment. A default value for the width of the wide line segment is stored in the parameter storage unit 46 described above, but the operator can later specify the thickness of each of the taxiways individually.

Further, as equipment, intersections connecting the taxiways and the runways are provided. The intersection is composed of a wide arc and a center line of the arc or a wide line segment and its center line. The specific shape of this intersection will be described in detail later.

In addition, in the present embodiment, it is possible to display various facilities such as spots, aprons, buildings and parking. Of these, the spot where the airplane arrives and departs consists of a circle and the characters shown in the circle. Further, an apron, building parking, etc. can have any shape such as a polygon, a rectangle or a circle.

It is also possible for the operator to freely define equipment other than these to newly create an arbitrary shape.

Specific Map Creation Operation In FIG. 4, when a new taxiway whose start point and end point are designated by a mouse or the like forms an intersection with an existing taxiway in the vicinity, the intersection is automatically identified. An explanatory diagram showing how they are generated is shown. First, FIG. 4 (1) shows how an intersection is generated when an existing taxiway is a straight line. First, before starting the taxiway, the starting point s and the ending point e are input by a pointing device such as a mouse. Then, the facility searching unit 24 described above searches for the existing taxiway Tx in the vicinity of the new taxiway designated by the start point and the end point. Then, the intersection calculator 26 obtains the intersection C between the existing taxiway Tx and the newly designated taxiway. This is because the intersection C is obtained by extending a new taxiway consisting of the start point s and the end point e in the direction of the end point e and finding the intersection with the existing taxiway Tx. Then, the designated end point e is replaced with the intersection point C, and the newly designated taxiway is replaced with the start point s and the end point C (intersection point C). Then, arcs Na and Nb having a predetermined radius of curvature are created between the existing taxiway Tx and a line segment composed of the new taxiway start point s and end point C. Then, as shown in the diagram of taxiway generation in FIG. 4A, the existing taxiway on the side of the intersection between the arc Na and the existing taxiway Tx is newly named Tx ′, and the arc Nb and the existing taxiway are existing. The taxiway on the side of the intersection with the taxiway Tx is newly named Ty. Then, a taxiway connecting the two taxiways Tx ′ and Ty obtained by newly dividing the existing taxiway, that is, the intersection of the arc Na and the taxiway Tx ′, the arc Nb, and the taxiway Ty. The line segment sandwiched between the contact point and is newly named Nc.

Further, the line segment on the side of the starting point s from the contact point of the arcs Na and Nb is renamed as the taxiway Ta.

As described above, when a new taxiway is generated in the vicinity of the existing taxiway in the present embodiment, Na, Nb, and line segment Nc are newly added as intersections to the database as constituents of the intersection. Register with. That is, the intersection is formed from these three Na, Nb, and Nc. Then, the existing taxiway Tx is divided into two taxiways Tx ′ and Ty, while Ta is finally generated as a new taxiway. FIG.
(4) shows the transition of the graphic database structure. As shown in FIG. 4 (4), first, only the taxiway Tx is registered as a taxiway before the taxiway is generated. Moreover, no data is registered for the intersection. Next, when a taxiway is generated, new taxiways Tx ′ and T
Three taxiways of y and Ta are registered in the database. On the other hand, the intersection C is newly registered as the intersection database. This intersection C is a circular arc Na and a circular arc Nb.
And a line segment Nc. The arc Na is an arc connecting the taxiways Tx ′ and Ta and corresponds to the rounded portion in the actual airport surface map. If nothing is specified for the radius of curvature of this arc Na, the default value stored in the parameter storage unit 46 is adopted. However, this arc is selected later and the operator manually inputs a predetermined radius of curvature. It is also possible to do so. As described above, in the present embodiment, the rounding portion on the airport surface map is automatically generated,
It is possible to obtain an airport plane map creation device capable of extremely easily drawing an intersection in an airport plane map. The radius of curvature of the arc Nb can be freely determined as in the case of the arc Na. Note that the line segment Nc is a line segment that connects the taxiway x ′ and the taxiway Ty, but it is stored in the database that this line segment is an extension of the taxiway Tx ′.
This is because the taxiway Tx ′ and the line segment Nc may form the original taxiway Tx again when the intersection is deleted.

As described above, in the present embodiment, when a new taxiway is provided near the existing taxiway by pointing out the start point and the end point, the intersection is automatically calculated and the intersection is automatically calculated. To form. Therefore, there is an effect that the airport surface map can be easily created. In general, on the airport surface, various airplanes move on taxiways, so a rounded part with a certain radius of curvature is required.The rounded part is also automatically generated when generating an intersection. Therefore, a highly convenient airport surface map creation device can be obtained.

Further, FIG. 4B shows an example in which the existing taxiway is not a straight line but a curved line. In this case, the existing taxiway differs from the example shown in FIG. 4 (1) only in that it has a constant arc shape,
The principle of generating an intersection is exactly the same as in FIG. 4 (1). 4 (2) shows the case where the existing taxiway Tx has a convex radius of curvature with respect to the newly created taxiway, but FIG. 4 (3) conversely creates a new one. The explanatory view about the case of having a concave curvature radius with respect to the guide path is shown. In both cases of FIG. 4 (2) and FIG. 4 (3), the intersection C is calculated, the existing taxiway Tx is divided into two new taxiways, and the intersection is defined by the arcs Na, Nb, and Nc. Figure 4
This is exactly the same as the example shown in (1).

In FIG. 4, the case where the newly created taxiway intersects with the existing taxiway has been described. However, the intersection C on the end point e side of the newly created taxiway (start point s, end point e) may appear on an extension of the existing taxiway Tx. That is, this is the case where there is only the end point of the taxiway near the end point e of the newly created taxiway. In this case, only one end point of the existing taxiway will be included in the new intersection. An example of such a case is shown in FIG. As shown in FIG. 5A, only one end point of the existing taxiway Tx exists near the end point e of the newly created taxiway (start point s, end point e). The extension line of the end point e and the extension line portion of the existing taxiway Tx intersect at the intersection point C. In this case, as shown in FIG. 5 (1), only one circular arc of the rounding portion is connected to the existing taxiway Tx, so only Na is created as the circular arc constituting the rounding portion. It As shown in the diagram after the generation of the taxiway in FIG. 5 (1),
The newly designated end point b is corrected to the intersection C, and the intersection C
A circular arc Na is generated with the center at. A line segment from the intersection of the arc Na and the existing taxiway Tx to the opposite side of the intersection C is newly defined as the taxiway Tx ′. Furthermore, the line segment on the side of the starting point s from the intersection of the arc Na and the newly created taxiway is finally defined as the taxiway Ta. Then, the intersection is composed only of Na.

The transition of the figure database structure when an intersection is generated by such an operation is shown in FIG.
An explanatory view thereof is shown in (5). As shown in FIG. 5 (5) before the generation of a taxiway, only Tx exists as an existing taxiway before a new taxiway is created. And, no data is registered as the intersection data. If a start point s and an end point e are newly specified to create a taxiway from this state and an intersection as shown after the taxiway is generated in FIG. 5A, the taxiway in FIG. As shown in the figure after generation, Tx is used as the taxiway.
′ And Ta will be registered. On the other hand, an intersection C is newly registered in the intersection database, and the intersection C is composed of an arc Na. Note that it is also registered that the arc Na is an arc connecting the taxiway Ta and the taxiway Tx ′.

Note that FIG. 5 (2) shows an explanatory diagram of the generation of an intersection when the left and right directions are opposite to those of the example shown in FIG. 5 (1). Further, FIG. 5C shows an example in which the existing guideway Tx is an arc and the radius of curvature is concave with respect to the newly created guideway. Thus, even when the existing taxiway Tx is not a straight line but a circular arc, a circular arc Na is formed and an intersection is created by the same principle as shown in FIG. 5 (1). Also, FIG.
Unlike (3) in FIG. 5, (4) shows an example in which the radius of curvature is convex with respect to a newly created guide path. Also in this case, the arc Na is created and the intersection is created. 5 (1) to 5 (4), the structure of the graphic database makes the transition shown in FIG. 5 (5). The graphic database constitutes a part of the equipment database 28 described above. It has already been explained in FIG. 3 above that the facility database 28 includes other spots and aprons in the database of taxiways and intersections.

In FIGS. 4 and 5, the case where the intermediate point or the end point of the existing taxiway exists near the end point e of the newly created taxiway has been described. However, conversely, there may be a case where the end point C of the existing taxiway Tx exists near the midpoint of the newly created taxiway (start point s, end point e). An example of the operation in the case where the intersection is automatically created in such a case is shown in FIGS. 6 and 7. In the example shown in FIG. 6, a taxiway to be newly created (start point s, end point e)
End point C (end point of taxiway Tx) located near the midpoint of
An example of the case of giving priority to is shown. That is, the line segment connecting the start point s and the end point e input by the operator using a pointing device such as a mouse is a line segment newly connecting the start point s and the end point C, and the line segment connecting the end point C and the end point e. It is remade into two line segments. Then, the three line segments are reconfigured so that they intersect at the end point C, and then arcs each having a predetermined radius of curvature are created for each of the two line segments.
In this way, the arcs Na, Nb, and Nc are created, and the intersection is defined from these three arcs. And
From the intersection of the arc Na and the arc Nc, a portion of the existing taxiway Tx other than the intersection is newly defined as Tx ′. Further, a line segment in the direction of the starting point s from the contact point of the arcs Na and Nb is newly defined as the guide path Ta. Further, a line segment in the direction of the end point e from the contact point of the arcs Nc and Nb is defined as the guide path Tb.

As described above, the intersection C between the new taxiway and the existing taxiway is defined as the arcs Na, Nb, and Nc. The transition of the graphic database structure in such a case is shown in FIG. 6 (2). As shown in FIG. 6 (2), the existing taxiway is only Tx before the taxiway is created, but after the taxiway is created, there are three guidances, Tx ', Ta, and Tb. The road is registered as a taxiway in the graphic database. Further, no data is registered in the intersection database before the taxiway is created, but a new intersection C is registered after the taxiway is created. Also, this intersection C is an arc Na
, Nb, and Nc. Also, this arc N
a is an arc connecting the taxiways Tx 'and Ta, and arc Nb is an arc connecting the taxiways Ta and Tb.
The arc Nc is an arc connecting the taxiway Tx ′ and the taxiway Tb.

In FIG. 6, the case where the position of the end point C of the existing taxiway is prioritized has been described. That is,
In the case where an intermediate point of the new taxiway (start point s, end point e) to be newly created exists near the end point C of the existing taxiway Tx, the guidance created so that this midpoint is brought close to the end point C. The road was transformed to generate an intersection.

On the other hand, there are cases where it is desired to give priority to the instruction line of the taxiway to be newly created. It seems that this depends in large part on the operator's preference as to what kind of strategy can be adopted as the method of drawing the airport plane map. Generally, when the end point C of the existing taxiway Tx is not so accurate and the start point s and the end point e for indicating the taxiway to be created are more accurate, the end point C is rather set. A preferable result can be obtained by transforming the taxiway to be made closer to the taxiway (start point s and end point e) to be created.

FIG. 7 shows an example of the generation of an intersection when the end point C is corrected so as to approach the line segment consisting of the start point s and the end point e for designating a new taxiway. There is. First, as shown in FIG. 7 (1), the end point C of the existing taxiway Tx is extended to find an intersection C'with a line segment consisting of the start point s and the end point e. Then, the end point C of the existing taxiway Tx is corrected to the newly obtained intersection C '. In this way, an intersection centered on the intersection C ′ is generated based on the taxiway in which the end point C is corrected and the line segment including the start point s and the end point e. As for the intersection, the start point s side of the intersection C ′ is set as a new taxiway Ta as in the examples described above.
The end point e side is defined as the taxiway Tb. Then, the existing taxiway is newly defined as Tx ', and the arcs Na and Nc are created for these three taxiways. The line segment Nb forming the intersection is an extension of the taxiways Ta and Tb and is defined as a line segment including the intersection C ′. That is, this Nb is a part of the intersection connecting the taxiway Ta and the taxiway Tb, and the arc Na is the taxiway Tx ′ and the taxiway Ta.
It is part of the intersection that connects with. Similarly, the arc Nc is a part of an intersection connecting the taxiway Tx ′ and the taxiway Tb.

FIG. 7 (2) shows how the graphic database is changed in the case of the intersection generation method as shown in FIG.
Is shown in The example shown here is shown in FIG.
It is almost the same as the example shown in (2). That is, as shown in FIG. 7B, only the existing taxiway Tx is registered as a taxiway before the taxiway is generated, and after the taxiway is generated, Tx ′ is registered as the taxiway. And T
A total of three taxiways a and Tb are registered in the database. Further, no intersection is registered before the taxiway is generated, but the intersection C is registered after the taxiway is generated. This intersection C is shown in FIG. 6 (2).
Similarly to what is shown in the figure after the generation of the guideway of No. 3, it is composed of an arc Na, an arc Nc, and a line segment Nb. Here, the difference from the example shown in FIG. 6B is that
The line segment Nb is an arc in the example shown in FIG. 6, whereas it is defined as a line segment of the extension of the taxiway Ta in the example shown in FIG. Is. Although there are differences in the arcs and line segments that form such intersections, the structure of the database is exactly the same.

As described above, the example shown in FIG. 6 is a method of generating an intersection and a taxiway when the existing taxiway gives priority to the end point C, and the example shown in FIG. 7 is new. 6 is an example of generation of an intersection and a taxiway when priority is given to the position of a line segment consisting of a start point s and an end point e that designates a taxiway to be created in FIG. Whether or not to create an intersection or the like is determined by, for example, specifying a mode as to which method the operator adopts before designating a start point s and an end point e for designating a new taxiway. It is preferable to carry out.

In the airport plane map creating apparatus according to this embodiment, taxiways are defined as a set of line segments, and each taxiway is defined as being connected by an intersection. The reason for adopting this kind of definition is
This is because in the operation management at the airport, the location of each airplane is often managed in units of taxiways and intersections.

On the other hand, the actual guideway is not limited to a straight line, but a curved guideway is often formed. In order to deal with such a case, it is preferable to define a taxiway by combining a plurality of line segments in the taxiway formed by a curve. In the airport surface map creation device according to the present embodiment, a case where a plurality of line segments are connected to define a taxiway in this way is called a composite taxiway. A method of generating an intersection and defining a new taxiway when a taxiway is newly provided near the intersection connecting the line segments of such a composite taxiway will be described.

FIG. 8 illustrates an example of a case where a taxiway Tx1 and a taxiway Tx2 are connected via an intersection C and a new taxiway is to be created near the intersection C. The figure is shown. A schematic diagram of the structure of the graphic database in the case of such a composite taxiway is shown in FIG. 8 (2). As shown in FIG. 8 (2), Tx is registered as a taxiway, and taxiways Tx1 and Tx2 are stored in the graphic database as constituent elements of this Tx. From such a state,
When the operator specifies the start point s and the end point e, the midpoint of the line segment consisting of the start point s and the end point e is the taxiway Tx1.
The generation of the taxiway and the formation of the intersection when the taxiway Tx2 is located near the intersection C will be described. FIG.
As shown in the figure after the generation of the taxiway in (1), correction is first performed so that the midpoint of the line segment se passes through the intersection C. This is, so to speak, a case where the intersection C of the composite taxiway is prioritized. When corrected in this way, the intersection point C can be considered as a case where four taxiways, namely, taxiways Tx1 and Tx2, and four taxiways of the line segment sC and the line segment eC are concentrated at one point. . In this way, when four taxiways intersect at one intersection C, only the number of combinations for extracting two taxiways from the four taxiways, that is, six arcs, is created to create the intersection. Is generated. That is, a circular arc Na that rounds the Tx1 and the line segment sC, and a circular arc Nb that rounds the line segment sC and the taxiway Tx2 are defined. Also, the line segment C
An arc that rounds the e and the taxiway Tx1 is defined as Nd, and an arc Ne that rounds the taxiway Tx2 and the line segment Ce is defined. Further, an arc that rounds the taxiway Tx1 and the taxiway Tx2 is defined as Nc, and an arc that rounds the line segment sC and the line segment Ce is defined as Nc. The state of the six arcs created in this way is shown in the drawing after the taxiway is generated in FIG. 8 (1). Then, a portion on the side of the starting point s from the intersection with the arcs Na and Nb is newly defined as a taxiway Ta,
A portion on the end point e side from the intersection of the arc Nd and the arc Ne is defined as a taxiway Tb. Further, a portion of the existing taxiway Tx1 extending from the intersection of the arcs Na and Nd to the outside of the intersection is newly defined as a taxiway Tx1 ′. By similarly defining a new taxiway Tx2 ′, the generation of a new taxiway and the generation of a new intersection are completed.

FIG. 8B shows how the figure database structure changes when an intersection and a new taxiway are generated in this way. As shown in FIG. 8 (2), the composite taxiway Tx composed of the two taxiways Tx1 and Tx2 has two taxiways Tx1 'and Tx1'.
x2 'and a new taxiway Ta and taxiway T
b is defined as a taxiway in the graphic database. On the other hand, there was no intersection registered in the database before the taxiway was generated, but as the intersection C is newly created, the intersection C is also defined in the intersection database. It Then, this intersection C is composed of six arcs as described in the drawing after the generation of the taxiway in FIG. 8 (1). These six arcs are Na, Nb, Nc, Nd, Ne and Nf.
6 arcs.

In the example shown in FIG. 8, the intersection C of the composite taxiway is prioritized, that is, a new taxiway is generated around the position of this intersection C. However, if the two taxiways Tx1 and Tx2 that form the composite taxiway are independently considered, the intersection with the line segment connecting the start point s and the end point e of the taxiway to be newly generated is shown in FIG. As shown in (1), there are two intersections C'and C ". Therefore, when these intersections C'and C" are taken into consideration, three intersections are formed as a composite. It is possible to think that it has been done. FIG. 9 shows an explanatory diagram of a method of generating a taxiway and a method of generating an intersection when the vehicle is caught as three intersections in this way.

First, the intersection C'of the line segment se and the existing taxiway Tx1 is used as an intersection to perform rounding to obtain two arcs N.
a and Nb are generated. This is generated in view of the relationship between the existing taxiway Tx1 and the line segment se representing the taxiway to be newly created.

Next, based on the relationship between the existing taxiway Tx2 and the line segment se representing the taxiway to be newly created,
Rounding is performed to generate two arcs Nb and Nd.

The existing taxiways Tx1 and Tx1
An arc Nc is created around the intersection C with 2. On the other hand, a portion in the direction of the starting point s from the contact point with the arc Na of the line segment se that specifies a new taxiway is newly defined as a taxiway Ta,
A portion from the intersection of the arc Na and the line segment se to the intersection of the arc Nb and the line segment se is newly defined as a short guide path Tc. This is because the contact points of the arcs Na and Nb with respect to the line segment se are greatly separated. Similarly, line segment se
On the other hand, a portion in the direction of the end point e from the contact point of the arc Ne is defined as the guide path Te. Further, a portion between the contact point between the line segment se and the arc Ne and the contact point between the line segment se and the arc Nd is defined as a short guide path Tf. This is because the contact point of the arc Ne with respect to the line segment se and the contact point of the arc Nd are far apart. Finally, the point between the contact point of the arc Nd and the contact point of the arc Nb with respect to the line segment se is defined as Nf, and this is registered in the database as a part of the intersection. Thus, the line segment se is divided into four parts of the guide path, unlike the examples described so far, in the example shown in FIG. In this way, by dividing the taxiway into four parts, it becomes possible to perform more detailed operation management in terms of operation management at the airport. Further, also in the existing guide path Tx1, since the contact point of the arc Na and the contact point of the arc Nd are relatively far apart, a portion between the contact points is newly defined as the guide path Tb. Then, a portion extending from the contact point between the existing guideway Tx1 and the circular arc Nd toward the outside with respect to the intersection is newly defined as Tx1 ′. Similar processing is performed on the taxiway Tx2.
That is, it is defined as a short guide path Td between the contact point of the arc Ne and the contact point of the arc Nb with respect to the existing guide path Tx2. Then, a portion facing the direction away from the intersection from the contact point between the existing guideway Tx2 and the arc Ne is newly provided with a new guideway Tx.
Defined as 2.

As a result of such processing, the shape is such that three intersections are gathered close together, and the number of taxiways is also composed of a total of eight taxiways.

FIG. 9B shows how the graphic database structure changes when the taxiway is generated and the intersection is generated as shown in FIG. 9A. As shown in the figure, first, only one composite taxiway Tx is registered as a taxiway before the taxiway is generated.
This composite taxiway Tx is composed of a taxiway Tx1 and a taxiway Tx2. As shown in the drawing after the taxiway is generated, a new taxiway Tx1 'and a taxiway T
Eight taxiways b, taxiway Ta, taxiway Tc, taxiway Tx2 ′, taxiway Td, taxiway Te and taxiway Tf are newly registered in the taxiway database. The new taxiway Tx1 ′ and the taxiway Tb are both the existing taxiway T
It is a part of x1, and the fact that the taxiway Tx1 ′ is an extension of the taxiway Tb and that the taxiway Tb1 is an extension of the taxiway Tx1 ′ is recorded as additional information. Similarly, additional information indicating that the guideways Ta and Tc are extensions of each other is also recorded. Hereinafter, the same applies to the taxiway Tx2 'and the taxiway Td, and the same additional information is also recorded to the taxiway Te and the taxiway Tf.

On the other hand, regarding the figure database in which the intersection is registered, no intersection is registered before the taxiway is generated, as shown in FIG. 9 (2). Then, after the taxiway and the intersection are generated, three intersections C, C ′, and C ″ are registered. The intersection C is composed of an arc Na and an arc Nd, and a line segment se and The intersection C'is an intersection formed with the existing taxiway Tx1, and the intersection C'is an arc Nb and an arc Ne.
Is an intersection composed of and, and the line segment se and the taxiway Tx
It is an intersection made for 2 and. The intersection C ″ is composed of the remaining arc Nc and Nf which is an extension of the new taxiway Ta.

Next, generation of a taxiway and generation of an intersection when the midpoint of a taxiway to be newly created intersects with the midpoint of an existing taxiway Tx will be described. FIG. 10 is an explanatory diagram of generation of taxiways when the taxiway to be newly created intersects with the existing taxiway Tx in this way. As shown in FIG. 10 (1), the intersection of the existing taxiway Tx and the line segment se representing the taxiway to be newly created is C. Four arcs Na, Nb, Nd, and Ne are generated around this intersection C. Then, the arc Na and the arc N of the existing taxiway Tx
A portion from the contact point of d toward the outside (direction opposite to the intersection C) is newly defined as a guide path Tx ′. Similarly,
A portion of the existing taxiway Tx in the outward direction from the intersection with the arcs Nb and Ne is newly defined as a taxiway Ty. Then, the part where the new taxiway Tx ′ and the taxiway Ty are removed from the existing taxiway Tx is defined as the part Nc forming the intersection.

Similarly, for the line segment se, the arc N
The outward direction from the contact point with k and the arc Nb is defined as the guide path Ta, and the outward direction from the arc Nd and the arc Ne (end point e
Direction) is defined as the taxiway Tb. And the line segment se
The portion excluding the taxiway Ta and the taxiway Tb is defined as a part Nf forming the intersection.

As a result of such an operation, only Tx was registered as a taxiway before the taxiway was generated, but a new taxiway Tx was newly registered after the taxiway and the intersection were generated.
Four taxiways of ', Ty, Ta, and Tb are registered. Note that additional information indicating that the taxiway Ty is an extension and that the taxiway Ty is an extension of the taxiway Tx ′ are respectively registered in Tx ′. Further, the fact that the taxiway Ta is an extension of the taxiway Tb indicates that the taxiway Tb does not include the taxiway Ta.
Each of the additional information indicating that it is an extension of is registered. Regarding the intersection database in the graphic database, no intersection is registered before the taxiway is generated, but the intersection C is registered after the taxiway and the intersection are generated (see FIG. 10 ( See 2)).
As described in the figure after the generation of the taxiway in FIG. 10A, the intersection C is formed by the arc Na, the arc Nb, the line segment Nc, and the arc Nd, the arc Ne, and the line segment Nf constitute the intersection C. It is registered. In addition, the fact that the taxiway Tx ′ is an extension for the line segment Nc and the taxiway Ta for the line segment Nf are registered as additional information.

Next, generation of a taxiway and generation of an intersection when the arc portion (rounded portion) of a new intersection formed by a taxiway to be newly created is included in the range of an existing intersection will be described. .

FIG. 11 shows the generation of a taxiway and the generation of an intersection when all the arc portions (rounded portions) of the intersection formed by the newly created taxiway are included in the range of the existing intersection. FIG. FIG.
As shown in (1), the taxiway to be newly generated is a line segment se (start point is s and end point is e).
In this case, it is assumed that this taxiway intersects with the line segment N1 forming the intersection C at the intersection C ′. From this state, two rounded portions, that is, arcs Na and Nb are formed around the intersection C'with respect to N1 and the line segment se representing the taxiway. As shown in FIG. 11 (1), this 2
The intersection of the two arcs Na and N1 exists within the intersection, that is, within the range of the line segment N1, and the intersection of the arc Nb and the line segment N1 is also included within the intersection, that is, within the range of the line segment N1. ing.

The existing intersection C before the taxiway is generated is composed of an arc N2 and an arc N3 in addition to the line segment N1. The intersection of the guide path Tx, which is an extension of the line segment N1, and the arc N2 is the newly provided arc N.
They are in contact with each other at a position outside (in a direction away from the intersection C) than the contact point between a and the line segment N1. This is because the example shown in FIG. 11 (1) is an example in which both arcs Na and Nb are included inside the intersection. Therefore, FIG.
As shown in the figure after the generation of the taxiway of (1), a section between the contact point of the taxiway Tx and the arc N2 and the contact point of the line segment N1 and the arc Na is newly designated as the taxiway Tb. It is defined.
Similarly, the contact point between the existing taxiway Tz and the arc N3,
A new guideway Tc is provided between the line segment N1 and the contact point of the arc Nb.
Is defined.

As described above, when both the taxiway to be newly created and the arc generated along with this taxiway are included in the existing intersection as shown in FIG. 11A, It is preferable that a part of the line segment N1 forming the existing intersection is newly defined as a taxiway.

FIG. 11B shows how the graphic database structure changes when a taxiway and an intersection are newly generated by such an operation. As shown in the figure, before the taxiway is generated, the taxiway is T
Three taxiways of x, Ty, and Tz are registered. An intersection C is registered as an intersection, and this intersection is composed of a line segment N1, an arc N2, and an arc N3. From this state, after the taxiway is generated, a part of the line segment N1 is newly defined as the taxiway Tb and the taxiway Tc. Therefore, the taxiway Ta created by the newly generated line segment se is In addition, three taxiways are newly registered. This state is shown in FIG. 11B after the taxiway is generated. In this case, since the newly generated taxiway Tb is an extension of Tx, additional information to that effect is also registered. Further, since the taxiway Tc is an extension of the existing taxiway Tz, additional information to that effect is also registered. Furthermore, before the taxiway is generated, additional information indicating that the taxiway Tx is an extension of the taxiway Tz is registered, but after the taxiway is generated, a new taxonomy is generated for this taxiway Tx. It is re-registered in the additional information to the effect that it is an extension of the taxiway Tb. Similarly,
Regarding the taxiway Tz, additional information indicating that it is an extension of the taxiway Tx was registered before the taxiway was generated.
After the taxiway is generated, the newly generated taxiway Tc
Additional information indicating that the extension is registered is registered.

Regarding the intersection database, only the intersection C was registered before the taxiway was generated. As shown in the diagram before the generation of the taxiway in FIG. 11 (1), it is registered that the intersection C is composed of three parts of the line segment N1, the arc N2, and the arc N3. After the taxiway is generated, an intersection C'is newly generated for the generation of the taxiway represented by the line segment se. This intersection C ′ is formed by a circular arc Na, a circular arc Nb, and a line segment N as shown in FIG. 11 (1) after the taxiway is generated.
1 '. This line segment N1 'is the taxiway T newly generated from the line segment N1 before the taxiway generation.
It is the remaining part excluding b and Tc. Further, additional information indicating that the taxiway Tx is an extension is registered in this line segment N1.

As the intersection C'is thus formed, the conventionally existing intersection C has two constituent elements, that is, an arc N2 and an arc N3. This is because the line segment N1 that was a component of the intersection C before the taxiway is newly generated is newly defined as a line segment N1 ′ that is a component of the taxiways Tb and Tc and the newly generated intersection C ′. Because it was redefined.

In FIG. 11, the case where the arcs Na and Nb provided along the taxiway to be newly created are both included inside the existing intersection has been described. on the other hand,
FIG. 12 shows an example in which either one of the created arcs Na or Nb extends outside the existing intersection. As shown in FIG. 12 (1), before the taxiway is generated, the intersection is defined by the line segment N1, the arc N2, and the arc N3 as in the case of FIG. 11 (1). It is configured. At this intersection, a guide path Ty is connected to the contact points of the arcs N2 and N3, and a guide path Tz, which is an extension of the line segment N1, is connected to the contact points of the line segment N1 and the arc N3. There is. A line segment guide path Tx is connected to the contact point between the line segment N1 and the arc N2 as an extension of the line segment N1.

For such existing taxiways and intersections, the start point s and the end point e are designated by the operation of the operator,
Regarding this line segment se and the existing taxiways and intersections, arcs Na and Nb are generated on the left and right of the line segment se, respectively.
This state is shown in the diagram after the taxiway is generated in FIG. As described above, the arc Nb has a contact point with the inside of the intersection, that is, the line segment N1, but the arc Na has no contact point with the line segment N1 and has a contact point with the taxiway Tx. That is, this arc Na is not included in the range of the existing intersection. Therefore, in the example shown in FIG. 12 (1), a contact point where the existing guideway Tx and the arc Na contact each other,
The section between the arc N2 and the contact point where the line segment N1 contacts is newly defined as the guide path Tb. Then, a portion in the outer direction (direction away from the intersection) from the contact point where the arc Na contacts the existing guideway Tx is newly defined as a guideway Tx ′. That is, according to the example shown in FIG. 12, the existing taxiway Tx is divided into two parts, a taxiway Tb and a taxiway Tx ′.

FIG. 12 (2) shows how the structure of the graphic database changes when a taxiway and an accompanying intersection are generated by such a method. As shown in FIG. 12B, three taxiways Tx, Ty, and Tz are registered as taxiways before the taxiway is generated. After the taxiway is generated from the state where these three taxiways are registered, the taxiway Tx is newly divided into two, Tx ′ and taxiway Tb. Then, Ta is registered as a new taxiway in the database as a taxiway, and the taxiway Ty that has not changed from the conventional one
Is registered in the taxiway database as it is. Further, the taxiway Tz is also registered as it was before the taxiway was generated. On the other hand, in the line segment N1 before the generation of the taxiway, the taxiway T is newly provided between the contact point of the arc Nb and the contact point of the arc N3.
It is defined as c. Therefore, this new taxiway Tc is also registered in the taxiway database. However, since this new taxiway Tc is an extension of the taxiway Tz, additional information indicating that it is an extension of the taxiway Tz is also registered. Similarly, the fact that the existing taxiway Tz is also registered has not changed, but the fact that it is an extension of the newly created taxiway Tc is registered as its additional information.

On the other hand, as the intersection database, only the intersection C is registered before the taxiway is generated.
The intersection C is composed of a line segment N1, an arc N2 and an arc N3. After the taxiway is created,
At the intersection, two existing intersections C and an intersection C ′ centering on the intersection C ′ between the newly provided taxiway Ta and the line segment N1 are registered. The data code of this intersection is almost the same as the data structure after the taxiway is generated in FIG. 11 (2). That is, the new intersection C
′ Is composed of a newly provided arc Na, an arc Nb, and the remaining line segment N1 ′ in which the newly created taxiway Tc is deleted from the line segment N1 before the taxiway generation. Further, the existing intersection C is also a component N1 before the taxiway is generated as shown in FIG. 11 (2).
Is a new component of taxiway Tc and intersection C'N1
N'and N3 as constituents because it was defined as'
Only the two arcs of are registered.

FIG. 13 shows the generation of a taxiway and an intersection when an intersection of an existing intersection exists near the end point e of a line segment se consisting of a start point s and an end point e representing a newly created guide line. Is shown. In such a case, it is preferable to move the end point e of the line segment se to the intersection C and configure the taxiway and the intersection by assuming that all taxiways are connected to the intersection around the intersection C. is there. Arcs Na and Nb are created on both sides of the line segment se (the end point e is corrected to the intersection point C), and at the same time, from the contact points between the arc segment Na and the arc segment Nb and the line segment se, an outward direction (from the intersection point C) is generated. A portion (direction away from) is defined as a newly provided taxiway Ta. Then, an arc Nc connecting the newly created taxiway Ta and the existing taxiway Ty is provided. Thus, in addition to the existing N1, N2, and N3, the arcs Na, Nb, and Nc are newly added as the constituent elements of the intersection C. With this technique,
When there is an intersection C of an existing intersection near the end point e of the line segment se indicating a taxiway, the end point e is made to coincide with the intersection C to easily form an intersection and generate a new taxiway. Is possible.

FIG. 13B shows how the graphic database structure changes when the taxiway and the intersection shown in FIG. 13A are generated. As shown in FIG. 13B, three taxiways of Tx, Ty, and Yz were registered before the taxiway was generated. From this state, after the taxiway is generated,
The taxiway Ta is newly additionally registered.

Before the taxiway is generated, only the intersection C is registered in the intersection database. The intersection C is composed of three circular arcs N1, N2, and N3. After the taxiway is generated, a new intersection is not registered, but arcs Na, Nb, and Nc are newly registered as constituents of the existing intersection C as constituents of the intersection C. With such a method, it is possible to easily generate an intersection and a new taxiway.

Setting of Width for Taxiway In the automatic connection of the center line, when the operator instructs a new taxiway with two or three points on the airport plane map, what kind of taxiway will result Only the centerline has been described as to whether it is formed and whether intersections are created.

However, in the airport surface map creating apparatus according to this embodiment, the center lines of taxiways and runways created as described above are displayed with a certain width on the screen as an airport surface map. are doing. In this way, a taxiway with a width is drawn by first drawing a shape in which the centerline of the taxiway is offset in the direction perpendicular to the centerline, and for this offset shape, a rounding process similar to the centerline Can be obtained by performing the process of providing. As a result, an actual airport map is displayed.

Three types of cases will be described below, depending on how to connect the taxiways. These three types of cases are divided based on the relative difference in the width of each taxiway, but the basic processing procedure is the same in any case.

First, a processing procedure for generating a T-shaped intersection when the width of a newly created taxiway and the width of an existing taxiway are the same will be described. Specifically, FIG.
This is an example in which the widths of the taxiways Tx and Ty and the new taxiway Ta are the same as shown in FIG.

As shown in FIG. 14, first of all, a new taxiway Ta having a width w1 with respect to the width w2 of the existing taxiway Tx (which is w2 like the existing taxiway Ty) is first formed. It is connected to form a T-shaped intersection. At this time, w1
= W2. Therefore, the center lines of the taxiways are offset by w2 / 2 and w1 / 2, respectively, in the direction perpendicular to the center lines. For example, an offset shape with respect to the new taxiway Ta is obtained. This is a figure in which the center lines are shifted to the left and right by w1 / 2. Similarly, for the guideway Tx, a shape offset by w2 / 2 in the direction perpendicular to the center line is obtained. Further, offset shapes and are obtained for the taxiway Ty, respectively.

Next, the correspondence between the offset shapes is calculated. Each of the offset shapes is named as shown in FIG. Next, the intersection between the offset shapes is calculated. For example,
The intersection of the offset shape of the new taxiway Ta and the existing taxiway Ty is obtained as c1. Also, c2 is obtained as the intersection of the offset shapes.

Next, the extension of the new taxiway Ta will be determined. That is, the extension shape from the ends p1 and p2 of the new taxiway to the intersection of the existing taxiways Tx and Ty (which has already been obtained as c1 and c2 as described above) is generated. It will be appreciated that this extension shape is trapezoidal in shape. That is, p1-c1-c2-p2, and this trapezoidal shape is referred to as Nf 'here. This Nf '
Is shown in FIG. Such a trapezoidal extension is required as a shape that fills a gap for forming an intersection by a rounded portion described later. If the intersection is not T-shaped but cross-shaped, it is a straight rounded portion. For example, such a linear rounded portion is shown in FIG.

Next, the offset shapes are rounded off. That is, regarding the offset shape and the offset shape, an arc is calculated with the intersection C1 as the center. Further, regarding the offset shape and the offset shape, an arc is calculated with the center intersection point c2 as the center. Then, using the narrower width of the existing taxiway and the new taxiway, this wide arc is applied to the previously calculated arc and arc to generate a wide arc. For example, with respect to the circular arc, the width w1 is applied to provide the circular arc with a thickness, and a wide circular arc Nb (p1'-p3'-p4'-p2 as shown in FIG.
Create ´). And regarding the arc, w
By adding the thickness of this circular arc only 2 (Fig. 15 (c))
Create a wide arc Na as shown in. This wide arc Na is formed as p1 ″ -p6 ″ -p5 ″ -p2 ″. As described above, in the airport plane map creating device according to the present embodiment, the offset shape of each taxiway is created, the arcs are created between the offset shapes, and the airport surface is created by adding a thickness to the arc. Creating the final display shape of the map. Such a wide arc is performed by first offsetting the center line and then creating an arc for it. At this time, it should be noted that each arc forming the intersection C is not formed with a thickness. This is because the offset may not be smoothly connected even if the center line is thickened, that is, the offset is added.

Next, a linear rounding of the existing taxiways is performed. A straight line rounding portion is created between the intersections calculated by rounding the center line for the existing taxiway. Since this is a straight line, it may not be appropriate to call it a rounded portion, but it is similar to Nb and Na described above in that it is a shape that connects between the guide paths. The straight line rounded portion connects the existing guideways Tx and Ty and is formed as a wide line segment Nc (p3-p4-p6-p5). The shape of this wide line segment Nc is shown in FIG.
5 (d). The straight rounded portion is located at a position connecting the original center lines, that is, the intersections determined by rounding the center lines of the existing taxiways Tx and Ty. Therefore, it has the same coordinates as the center line forming the intersection.

Thus, as shown in FIG. 15D, the linear rounded portion has a center line unlike the other rounded portions. Therefore, as the data structure of this linear rounding portion, it is preferable to store the coordinates of the center line and the width thereof as data contents. As the data structure of the rounding portion, it is preferable to store the center coordinates of the arc, its radius, and the width value of the wide arc.
Of course, how to express this o figure on the database depends on various applications or computer systems, and various data structures can be adopted according to the applications.

Further, as the data structure of the airport plane map, only the center lines of the taxiways and the center lines of the intersections are stored and sequentially calculated by the calculation when displayed on the display device 36 (see FIG. 1). It is also preferable to adopt.

Although the case where the existing taxiway and the new taxiway have the same width has been described in FIG. 14, an example in which the existing taxiway and the new taxiway have different road widths is shown in FIG.
17 and FIG. FIG. 16 shows an example in which the width w1 of the new taxiway is smaller than the width w2 of the existing taxiway. As described above, the width of the smaller guide path is adopted as the offset shape or the width (see FIG. 4). Therefore, as shown in FIG. 16, the smaller width w1 is adopted as the thickness of the wide arc.

Further, FIG. 17 shows an example in which the width w1 of the new taxiway Ta is wider than the width w2 of the existing taxiway. In this case, the value of the width w2 of the existing taxiways Tx and Ty is adopted as the width of the wide arc.

FIG. 18 shows an example in which an existing taxiway and a new taxiway cross each other. This cross shape is obtained by rotating the wide arc and the trapezoidal shape shown in FIG. In addition, in FIG. 17, a trapezoidal shape facing the end point of the new taxiway is provided, but in the example shown in FIG. 18, a centerline is provided by matching this trapezoidal shape with a 180 ° rotated shape. It is represented as a wide line segment (shape as shown in FIG. 15D).

As described above, when displayed on the display device 36 based on the data of the center line, a predetermined thickness is provided and displayed, so that it is possible to display a highly realistic airport surface map.

Details of Procedure for Generating Taxiway Only with Center Line Now, in FIG. 9, the composite taxiway intersects with a taxiway to be newly created, and the intersection C ′ of the composite taxiway and the taxiway newly created. The generation of the intersection and the new taxiway in the case where the midpoint of the line segment se that indicates is close to each other has been described.

Since the example of FIG. 9 is considered to be the most complicated in the present embodiment, the detailed procedure of the generation of an intersection and the generation of a new taxiway and intersection will be described below in the case of this example. Will be described below.

The taxiway generation intersection generation principle described here is applicable to the generation of taxiways and intersections in other cases.

Even in the case of such a composite taxiway,
Basically, it is possible to automatically generate an intersection by repeating the rounding process of two line segments. The number of times of this repetition is a combination of _n C ₂ with respect to the number n of taxiways connected to the intersection. Similarly, the number of rounded parts (arcs)
It becomes _n C ₂ . It should be noted that n is exactly the number of line segments obtained by dividing a newly created taxiway and an existing taxiway at intersections.

(1) Taxiway Generation Operation and Existing Data Hereinafter, the generation of an intersection when a taxiway is newly generated for existing data will be described with reference to FIGS. 19 to 24. A case where the existing data is a composite taxiway Tx having taxiways Tx1 and Tx2 as components as shown in FIG. 19 will be described. With respect to this composite taxiway Tx, the start point s and the end point e are designated by the operator's pointing device or the like in order to create a new taxiway as shown in FIG. The midpoint of the line segment se and the intersection C of the composite taxiway are close to each other.

First, a line segment se passing near the intersection C in the composite taxiway Tx is generated. The line segment se is generated as a line segment connecting the start point s and the end point e. However, in the example shown in FIG. 19, it is assumed that the intersection C and the line segment se are separated by a certain fixed distance. This is not the operation as shown in FIG. 9 but the line as shown in FIG. 8 when the midpoint of the line segment se and the intersection C are extremely close to each other and almost the same point is recognized. This is because it is preferable to correct the intermediate point of the minute se so as to pass through the intersection C and then generate the intersection. Also in the airport plane map creation device according to the present embodiment, when the midpoint of the line segment se is close to the intersection C to some extent, the midpoint is automatically corrected to the intersection C,
The intersection and the new taxiway are constructed in a simple manner as shown in FIG. A parameter indicating how close the method shown in FIG. 8 is adopted is stored in advance in the parameter storage unit 46 as shown in FIG. The parameter storage unit 46 is a value stored in advance by the operator from the input device 42 such as a keyboard via the parameter input unit 44 as described above. If the line segment se approaches the intersection C from this parameter value, the method of creating the intersection shown in FIG. 8 is adopted, and if it is larger than this distance, the method of creating the intersection shown in FIG. 9 is adopted. It is also suitable in the present embodiment to be configured for use.

By switching the creation method in this way, it is possible to create an accurate airport plane map while saving calculation time and storage capacity.

Next, the line segment se is 2 at the intersection C'to be described later.
The division is performed, and a rounding process is performed on a total of four line segments including these two line segments and the two components of the complex taxiway, the taxiway Tx1 and the taxiway Tx2. In this case, since there are _four line segments, ₄ C _{2 combinations} of rounded portions (arcs) are generated.

First, the intersection C'of the component Tx1 and the line segment se
Is required (see FIG. 23). Next, the rounding calculation of the component Tx1 and the line segment se is performed, and as shown in FIG.
Na, Nb, Nc, Nd and Ne are calculated respectively.
Here, Ne is a linear rounded portion, but the other rounded portions have an arc shape. Then, the rounded portion is determined by comparing the lengths of the component Tx1 and the line segment se. As a result of this determination, the arcs Nb and Nd are excluded from the rounding portion. As a result, the arcs Na and Nc and the straight line Ne are handled as effective rounding portions.

Next, the effective contact points of the rounded portion, the component Tx1, and the line segment se are obtained. As a result, the component Tx1 contacts the contact point Pa, and the line segment sC ′ contacts the contact point Pb. The line segment C'e is in contact with the contact point Pc. In addition,
The end point of the component Tx1 on the opposite side of the intersection C'is called Px1. In this way, by dividing the line segment se into two at the intersection point C ′, the whole is treated as three line segments, and the rounded part is ₃ C.
₂ (= 3) rounded parts are generated.

As described above, the line segment se and the component Tx
The rounding process with 1 is completed.

( 2 ) Relation between the component Tx2 and the line segment se The intersection C ″ of the component Tx2 and the line segment se is first obtained (FIG. 2).
1). Next, the rounding calculation of the component Tx2 and the line segment se is performed, and then the rounding calculation of the component Tx2 and the line segment se is performed to obtain the rounded portions N1, N2, N3, N4, and N5. Here, the rounded portion N5 is a linear rounded portion.
The other rounded parts are arcs. The linear rounded portion N5 is the same as the rounded portion Ne obtained above (however, the coordinates of the start point and the end point are different). Next, the component T
From the comparison of the lengths of x2 and the line segment se, the determination regarding the rounded portion is performed. As a result of this determination, the rounded portion formed by the arcs N1 and N3 is excluded from the rounded portion. As a result, finally N
2, N4 and N5 are handled as effective rounding parts (see FIG. 21). Next, the effective contact points P1, P2, P3 are calculated. Here, P1 is a contact point between the line segment sC ″ and the rounded portion N2, and a contact point P2 is a contact point between the component Tx2 and the rounded portion N4. Next, P3 is a line segment C ″ e and an arc N4. It is a contact point with. Furthermore, the end point on the opposite side of the intersection C ″ of the component Tx2 is called Px2.

( 3 ) Relationship between Component Tx1 and Component Tx2 First, rounding calculation is performed on the component Tx1 and the component Tx2 centering on the intersection point C, and rounding portions Nx, Ny, Nz, and Nw are obtained. Here, as shown in FIG. 20, all the rounded portions are circular arcs. Next, the component Tx1 and the component Tx
2 is compared with the length, and the rounded portion is determined. Based on this determination, as shown in FIG. 22, Ny, Nz
And Nw are excluded from the rounding part. As a result, only Nx is handled as an effective rounding section. Next, the contact point between the rounded portion Nx and the component Tx1 is defined as Px. Further, the contact point between the rounded portion Nx and the component Tx2 is Py.

( 4 ) Segment of line segment se and components Tx1 and Tx2
Split.

First, the line segment se is divided, and the area from the starting point s to the contact point Pb is defined as a new guide path Ta. Also, the contact point Pb
To the contact point P1 are defined as a new taxiway Tc. Further, a new guide path Te is defined from the end point e to the contact point P3. Further, the contact point P3 to the contact point Pc is defined as a new guide path Tf.

Next, the component Tx1 is divided, and the end points Px1 to Px are defined as a new taxiway Tx1 '. Also, contact point P
A new guide path Tb is defined from x to the contact point Pa. Further, the component Tx2 is divided, and the portion from Px2 to the contact point P2 is defined as a new guide path Tx2 '. Further, the contact point P2 to the contact point Py is defined as a new guide path Td. The new taxiways Ta, Tb, Tc, Td, T defined in this way
e and Tf are newly registered in the database as new taxiways. Then, the taxiway Tx1 ′ and the taxiway Tx2 ′ are re-registered by correcting the coordinate positions of the existing components Tx1 and Tx2. A layout of the positions of such newly generated taxiways is shown in FIG.

( 5 ) Generate intersections C, C ′, C ″,
The taking part is registered in this configuration to form the final shape.

The respective elements determined as described above are combined and registered in the figure database as the final shape. That is, the circular arc N that is the rounded portion generated in (2) above.
The a, Nc, and the linear component Ne are registered as the components of the intersection C ′. Although the straight line portion Ne is registered as a component of the intersection C ′ in this example, it may be registered as a component of the intersection C ″. Further, the arcs N2 and N4 described in (3) above are the intersection C. ”Register as an ingredient. Also,
The arc Nx described in (4) above is registered as a component of the intersection C. Next, the new taxiway T generated in (5) above
a, Tb, Tc, Td, Te, Tf, Tx1 ', Tx2
Register ´ as a new taxiway in the database. The final shape with these determined elements is shown in FIG. As shown in this figure, the total number of round-up portion becomes _{3 C 2 + 3 C 2 +} 2 C 2 -1 = 6 pieces. Note that one element is subtracted here because Ne and N5 of the linear portion are calculated in duplicate as described above.

Definition of Area by Polygon etc. As described in the table shown in FIG. 3, the apron, the building, the parking, etc. are automatically connected to the center line which is a characteristic item in this embodiment. General C without performing
Like the AD device, the operator draws an arbitrary shape on the airport plane map.

As the arbitrary shape used in the present embodiment, it is possible to use an arbitrary polygon (polygon) or a quadrangle (rectangle). Also, circles can be used. As attributes of an apron, a building, etc. created using these arbitrary shapes, for example, it is preferable to add the following attribute information.

That is, a) area type, b) area identifier, c) shape type (whether an arbitrary polygon or a quadrangle), d) an aircraft symbol when an aircraft appears in this area. It is preferable to record the display control information of e), the display control information of the tag when the tag of the aircraft appears in this area, and the name of this area, etc. in the database as attributes of these arbitrary shapes. is there. Next, the procedure for defining the shape will be described with reference to FIG. First, as shown in FIG. 25A, an arbitrary polygon is generated by successively designating the vertices that make up the arbitrary polygon. First, the first point is designated by clicking the mouse. When the cursor is moved from the designated first point, the line segment connecting the tip of the cursor and the first point is displayed in the rubber band display device 3
6 is shown. This rubber band display is a display that follows the movement of the cursor and connects the first point and the tip of the cursor. When the operator designates the second point at a desired location by clicking the mouse or the like, the line segment between the first point and the second point is not fixedly displayed as a rubber band but is fixedly displayed. When the cursor is moved again from the second point, the second point and the tip of the cursor are joined by the line segment by the rubber band display, and the movement of the cursor follows the tip of the cursor, The line segment connecting the second point is represented by a rubber band display. Below, the third point and the fourth
It is possible to form an arbitrary polygon having an arbitrary number of strokes by successively determining points, ....

Further, the airport plane map creating apparatus according to the present embodiment can easily create a quadrangle, particularly an oblique quadrangle. Generally, when a quadrangle is drawn using a pointing device such as a mouse, the quadrangle is often drawn by designating a diagonal line of the quadrangle. That is, the quadrangle drawn by such a method is a quadrangle having only vertical and horizontal sides.
However, when creating an airport surface map or the like, there are many cases where buildings and various facilities are provided diagonally.
In the case of a building that is erected diagonally like this,
First, draw a rectangle with only vertical and horizontal sides,
By rotating this quadrangle, a shape representing a desired building or the like was drawn on the airport plane map. However,
If a quadrangle rotated by a predetermined angle can be drawn from the beginning, it is possible to create a highly convenient airport plane map. In the present embodiment, as shown in FIG. 25 (b), each side forming a quadrangle can be freely drawn with a mouse cursor in the same manner as an arbitrary polygon. It is possible to draw a rotating rectangle. That is, as shown in FIG. 25 (b), when the cursor is moved after the first point is designated by mouse click or the like, the tip of the cursor and the first point
A rubber band is displayed on the line connecting the points. Then, when the second point is designated, the line segment connecting the first point and the second point becomes one side of the quadrangle. When the cursor is moved after the second point is confirmed, the movement of the cursor is restricted so that the cursor can move only in the direction perpendicular to the line segment connecting the first point and the second point. Therefore, if the third point is specified at an arbitrary point, the line segment connecting the first point and the second point and the second point and the third point
It is always drawn at a right angle to the line connecting the points. When the line segment connecting the second point and the third point is determined, the remaining two sides forming the quadrangle are also drawn in the same manner, so that the quadrangle can be drawn at the position rotated in advance. In the present embodiment, since it is possible to easily draw a quadrangle in such a rotated position, a highly convenient airport plane map creation device can be obtained.

The arbitrary polygon or quadrangle thus drawn can be freely modified thereafter. FIG.
6 is an explanatory diagram showing how such a change is added to an arbitrary polygon or quadrangle. FIG. 26A shows an explanatory diagram when the arbitrary polygon is changed. As shown in the figure, when the cursor is placed on an arbitrary vertex of an arbitrary polygon, the position of this vertex can be freely changed with the movement of the cursor. In this state, move the mouse cursor to the desired position and click the mouse to cancel the link between the mouse cursor and this vertex, and change the position of that vertex to the current cursor position. It is. FIG. 26 (b)
As shown in (1), it is possible to change the position of any vertex in the case of a quadrangle. In the case of a quadrangle, even if the apex is changed, the sides connected to the apex are adjusted so as to maintain a mutually perpendicular relationship.

Map Construction by Multiple Stacking of Facilities On the airport surface map, various facilities such as an apron and a parking area and areas are displayed in addition to the runways and taxiways.

In the airport surface map creating apparatus according to the present embodiment, so-called priorities are assigned to each of the displayed facilities and areas, and a higher priority is displayed in a portion where the facilities and areas overlap. Is configured to. FIG. 27 shows an explanatory diagram showing the structure of a map relating to such a priority order. Since this priority represents, so to speak, whether it is on the front side or on the back side on the map, the one positioned on the front side in FIG. Is described on the lower side.

As shown in FIG. 27, the airport plane map 50 includes a select map 52 and a default map 5.
And 4. The select map 52 is not displayed in a normal state. For example, the name of the equipment is displayed in letters on the map or the center line of the runway is displayed according to an instruction from the operator, and other approach lines of the airplane are displayed. A display that does not exist at the actual airport, such as the case of displaying a taxi or a taxi way, is displayed according to the instruction of the operator. The default map 54 represents the facilities and areas that actually exist at the airport, and the facility data 56 is large.
And area data 58. In the default map 54 and the select map 52, the select map 52 is located on the front side. That is, in the select map 52 and the default map 54, the select map 52 has a higher display priority.

The default map 54 is the equipment data 56.
And equipment data 5
6 is displayed in front of the area data 58. That is, the display of the equipment, taxiways, intersections, and the like provided above the turfgrass area and the parking area included in the area data 58 has priority.

Data Structure Below, FIG. 28 to FIG. 34 show a plurality of examples of the data structure of the taxiway in the airport surface map creating apparatus according to the present embodiment.

FIG. 28 shows the data structure of one taxiway. The displayed graphic is a simple line segment, and the graphic database structure is simply the registration of the taxiway Ta.

FIG. 29 shows the data structure of the composite taxiway. As shown in FIG. 29, this composite taxiway is composed of, for example, three line segments Ta1, Ta2, and Ta3, and the end points and the intersections are p1 and p, respectively.
It is designated as 2, p3 and p4. In such a structure of the graphic database of the composite taxiway, first, the composite taxiway Ta is registered in the database of the taxiway, and the individual taxiways Ta1 and Ta are used as the components of the composite taxiway Ta.
2 and Ta3 are registered. As shown in FIGS. 28 and 29, basically, in the case of a single taxiway, nothing is registered in the intersection database.

FIG. 30 shows a data structure in the case where two taxiways are connected via one intersection. As shown in FIG. 30, the taxiway Ta and the taxiway Tb are connected via an intersection C. An arc Na, which is a rounded portion, forms the intersection C at the intersection C. In such a pattern, two taxiways of Ta and Tb are registered in the taxiway database, and one intersection C is registered in the intersection database. A rounded portion Na is registered as a component of the intersection C in association with the intersection C.

In FIG. 31, the number of taxiways is three or more,
Various patterns are shown for the case of a single intersection. FIG. 31 (1) shows a state of an intersection when two taxiways Tx and Ty of three taxiways are on a straight line. Further, FIG. 31 (2) shows a state of the three-way intersection when the intersection C of the three taxiways appears inside the intersection C. Further, FIG. 31 (3) shows an example in which the intersection C of the three taxiways appears outside the intersection C. The example of FIG. 31 (2) is shown in FIG. 4 (2), for example.
31 (3), and the example shown in FIG. 31 (3) is similar to the example shown in FIG. 4 (3), for example.

Further, FIG. 31 (4) shows an example in which four taxiways intersect at intersection C. Furthermore, FIG.
(4) shows an example of the case where the opposite guiding paths of these four guiding paths are on a straight line. That is, the guideways Tx and Ty are located on a straight line, and the guideways Ta and Tb are also located on a straight line. That is, the example shown in FIG. 31 (4) is an example in which two taxiways intersect and a new intersection C is formed. FIG. 31 (4) is similar to the example shown in FIG. 10 (1), for example. FIG. 31 (5) shows an example in which four taxiways intersect at one intersection C. However, in the example shown in FIG. 31 (5), no taxiway exists on a straight line. That is, FIG.
The example shown in (5) is almost the same as the example shown in FIG. 8 (1).

FIG. 31 (6) shows the structure of the figure database when three taxiways are included as in (1) to (3) of the example shown in FIG. As shown in the figure, three taxiways, a taxiway Tx, a taxiway Ty, and a taxiway Ta are registered in the taxiway database. On the other hand, one intersection C is registered in the intersection database, and the rounded portions Na, Nb, and Nc are registered as the elements forming the intersection C, respectively.

FIG. 32 shows a data structure when the number of taxiways is 3 or more and the number of intersections is 2 or more. The example shown in FIG. 32 is shown in FIG.
This is similar to the example shown in (1). That is, this is an example of a case where four taxiways intersect each other, but intersect at different intersections C, C ′, C ″. The database structure of the figure shown here is shown in FIG.
As shown in (2), this structure is similar to the data structure shown in (2) of FIG.

FIG. 33 shows a combination pattern of the number of taxiways and the composite taxiway, where the total number of taxiways is three or more and the number of intersections is one. Pattern is shown. In the example shown in FIG. 33, the composite taxiway Tx, the composite taxiway Ty, and the (normal) taxiway Ta are registered. The complex taxiway Tx is
Tx1 and Tx2 'are registered as the components. In addition, the composite taxiway Ty has Ty1 as its component.
, And Tx3 is registered.

Further, in the intersection database, the intersection C
Is registered, and this intersection C is N as a rounding part.
a, Nb, and Nc are registered. Of these, Na and N
Although b is an arc, Nc is a portion on a straight line.

FIG. 34 shows an example in which the total number of (normal) taxiways and composite taxiways is 3 or more, and the number of intersections is 2 or more. As shown in FIG. 34, this pattern is composed of a composite taxiway Tx, a normal taxiway Tb, a taxiway Ta, Tx3 ′, and Tc. This composite taxiway Tx is composed of two components, Tx1 and Tx2 '. In addition, three intersections are registered in the intersection database of this example. That is, the intersection C, the intersection C ′, and the intersection C ″.
The intersection C is composed of a rounded portion Na. Further, the intersection C ′ is composed of a rounded portion Nb. And
The intersection C ″ is composed of Nc.

Structure of Mesh Data and Automatic Creation thereof As described above, the mesh area is used in the airport plane map creating apparatus according to the present embodiment. The airport plane map creating apparatus according to the present embodiment employs a method of accelerating the reference to the facility or area information displayed in the foreground as a result of multiple stacking of facilities / areas. In other words, in order to quickly refer to a point on the screen and whether that point is turfgrass, taxiway, or some building, mesh data is held separately from the map data. There is.

Such mesh data first defines a meshed mesh area in the airport plane map. FIG. 35 shows that a mesh area is defined on the airport plane map. Each mesh area is described as mesh A, mesh B, and mesh C in FIG. In this way, the mesh area is not provided for the entire airport surface map, but only for the necessary parts to save the storage area inside the computer and to speed up image processing. Creating mesh data. Each mesh region has a mesh data reference point (see FIG. 35).
Reference), and one section of each mesh is specified by the deviation from this mesh data reference point. The size of one mesh is parameterized and is determined to be an appropriate value in consideration of the performance deterioration due to the increase of the data amount and the allowable range of the error with respect to the designated coordinates. However, one unit of this mesh actually depends on the accuracy of the sensor that detects the position of each airplane on the airport surface. Specifically, the minimum unit that this sensor can identify corresponds to one unit of each mesh. In the airport plane map creation device according to the present embodiment, the creation of this mesh data is collectively performed when the creation instruction from the input device 42 or the creation of the map is completed.

The data structure of this mesh data holds the facility or area identifier for each unit of each mesh and the area information of the area to which one unit of the mesh belongs (see FIG. 35). The facility or area identifier is intended for the frontmost facility or area that is displayed in multiple stacks. That is, this identifier represents what is displayed on the display device 36. This equipment or area identifier can be set when the equipment or area identifier is set in order when the equipment or area is displayed in the order of display when displaying each equipment or area in the order of multiple stacking. The identifier displayed at the forefront is stored as the facility or area identifier.

On the other hand, the area information is held as bit data corresponding to all areas (default map and select map), and is used to determine the area including the designated coordinates. This area information is information specific to the location, such as a parking area or a grass lawn area. For example, when an airplane is located in the parking area, data indicating the airplane is stored as the equipment or area identifier, but the parking area is held as it is as the area information.

Zone Data Structure and Automatic Creation thereof When the airport plane map is displayed by the airport plane map creating apparatus according to the present embodiment, partial drawing speed is increased and the operator during the creation of the map Zone data is created and retained mainly for the purpose of speeding up the reference of existing equipment near the designated coordinates. The zone data is formed by defining a block-shaped zone area in the airport plane map and storing a table in which the equipment or area included in the zone area is registered for each zone. FIG. 36 shows such a zone area and the data structure of the zone data created for each zone area. FIG. 36 (a) shows that the airport plane map is divided into zone areas. The size is parameterized in one zone, and the operator stores the appropriate size of the zone area in the parameter storage unit 46 via the input device 42. The size of this zone is determined to be an appropriate value considering the maximum number of equipment or areas that will be included in each zone. FIG. 36B shows the state of a zone data table created for each zone area. This zone data is an array of identifiers of equipment and areas included in the zone, and this table is created at the same time when each equipment is created. In other words, this zone data is updated while drawing the airport map. When the size of the zone area is changed, new zone data is recreated based on the shape data of the facility or area.

As shown in FIG. 36 (b), each zone data is composed of a table, each entry in the table is linked by a chain such as a pointer, and each entry has an equipment or area identifier. Hold each.

[0195] By creating such zone data, when the airport plane map is enlarged or displayed on the zoom screen by trimming, etc., it is limited to the equipment or area within a partial area for reference. By performing the display, it is possible to speed up the display. For example, as shown in FIG. 37, when only the area indicated by two x points is the display target, the image display target is set only for the zone including the partial display designation area. The speed of image display can be increased. For example, in the example shown in FIG.
Only 12 zones are used as a reference range of equipment or area so as to include a partial designated area indicated by two dots (a rectangular area surrounded by a dotted line). By not subjecting the equipment included in the other zones to the display processing, the processing speed can be increased.

Further, by providing this zone data, when the facility near the point designated by the operator is identified when the airport plane map is generated, when the point designated is near the boundary line of the zone, By targeting adjacent zones as well, it becomes possible to narrow down the data to be referenced, and it is possible to quickly search for equipment near the designated point. For example, in FIG. 38A, when the operator's designated point is not near the zone boundary line, the zone including the designated point becomes the search target first. This search is performed by the equipment search unit 24 shown in FIG. Also,
FIG. 38B shows an example of a zone to be referred to when the operator's designated point is near the zone boundary line. In this way, when the designated point is in the vicinity of the boundary line of the zone, it is possible to search for all the equipment in the vicinity by including the adjacent zones with the boundary line in between. The example shown in FIG. 38 (c) is an example in which the designated point exists near the corner of the zone, that is, the point where the zone boundary lines intersect. In this case, not only the zones adjacent to each other across the boundary line but also the zones adjacent to each other in the diagonal direction are targeted for the search.

The above is the case when attention is paid only to the designated points. However, when searching for existing equipment at the time of taxiway generation, the neighborhood of the rectangle (the shape of the newly created taxiway) in which the line segment connecting the designated points has a width (display width) Since the existing equipment is searched for, the zone to be searched is, for example, the shaded area in FIG.

As shown in FIG. 44, the four zone regions surrounding the intersections of the zone boundary lines included in the rectangular shape of the taxiway to be created are the targets of the search. next,
A zone area including the four end points of this rectangle is a search target. In the search for the zone area including the end points, as shown in FIG. 38, it is determined whether or not the end points are near the boundary line of the zone area and whether or not the end point is near the boundary line intersection point. And the adjacent zone areas are appropriately searched.

After the zones to be searched are determined in this way, all the equipment identifiers registered in each zone are taken out, and the list of equipment identifiers to be subjected to the calculation processing is removed from them without duplication. It is created and a search is performed based on this list.

Stacked Display In the airport surface map creation device according to this embodiment,
For example, it is assumed that the image is displayed on a raster scan type display device. Therefore, as shown in FIG. 27, the display of the airport plane map is realized by displaying the display objects on the screen in a predetermined order.

By adopting such a display system, it is possible to represent the shape hidden in the equipment at the forefront (particularly the shape of an intersection) by a combination of wide line segments and simple shapes of wide arcs. . Such a situation is shown in FIG.
9.

Further, an arbitrary shape can be registered as a part of the taxiway even with respect to the taxiway existing on the forefront, and such a registration makes it easy to obtain a complicated shape. It is possible to draw. For example, FIG. 40 shows an example in which an additional shape is added to the taxiway as an arbitrary shape. For example, when there is a part where the part of the taxiway is wide, the part where the part is wide is added with a shape such as a quadrangle or a circle.
By expressing by the additional shape 4, an example of the zone of the target of the partial reference is shown. In this way, it is possible to represent a taxiway or the like in which the designated point is thicker on the boundary of the zone.

Select Map The select map will be described in detail. It has already been explained that the select map is an optional display target and is displayed in front of the base default map. The select map 52 is composed of a plurality of layers (see FIG. 41). Display and non-display can be set for each layer independently, and display or non-display of the entire select map can be specified. Furthermore, the display / non-display of each layer included in the select map 52 is registered in the parameter storage unit 46 in advance as a parameter, and it is possible to select the display target at the time of initial display and collective display / non-display.

Further, it is also preferable that this parameter is automatically changed in accordance with the display / non-display operation of each layer included in the select map 52. For example, when the non-display is set collectively, and when the display is switched to the collective display again, it is possible to return to the display state before the non-display is set. By adopting such a method, the default map 54,
Superimposition display of analog data from radar at an airport and trade-off display of analog data and select map can be realized at high speed.

Display by multi-stacking of multi-color display equipment for each equipment has already been described. In order to make the display of the airport surface map easy for the operator to view by such a display, it is preferable to assign a color to each type of facility and area and display the map in different colors. The color is assigned to each facility by a color index. This color index for each type is held in each database of facilities and areas. The actual display color is determined by the RGB value set for this color index, and this RGB value is displayed by the display processing unit 3.
4 is set.

The color index is 8-bit data, the lower 4 bits are assigned to the default map, and the upper 4 bits are assigned to the select map. The structure of such a color index is shown in FIG. In the airport plane map creating device according to the present embodiment, the lower 4-bit data and the upper 4-bit data are used independently. This means that when the upper 4 bits are all 0, the color index composed of the lower 4 bits is valid, and when the upper 4 bits are not all 0, the upper 4 bits are set regardless of the setting of the lower 4 bits. The bit value is valid.

For this reason, the color index of the lower 4 bits or the upper 4 bits is held in the data for each layer of the equipment or area and the select map, and the RGB value is 8
Hold for a bit.

With such a configuration, by associating the upper 4 bits with the select map and the lower 4 bits with the default map, when there is no display target in the select map, that is, all of the 4 bits are all 0. In this case, the default map is displayed. If the above 4 bits are not 0, the select map is displayed according to that value.

As a result, when the upper 4 bits are all 0, the 4 bits of the default map are valid, but when there is something to be displayed in the upper 4 bits, that is, in the select map, the upper 4 bits are set. Will be enabled and the default map will not be displayed. Thus, when there is an object to be displayed on the select map, the object existing on the default map can be automatically hidden.

With such a configuration, it is possible to realize the collective display and collective non-display of the select maps by copying the bitmap data to the upper 4 bits and clearing the upper 4 bits.

[0211] As described summarized above, according to this embodiment, when the draw airport surface map, simply by specifying the taxiway to create new, automatic intersection shape and new taxiways Since the airport plane map creation device whose shape is automatically determined can be obtained, the airport plane map can be created easily. Also,
Even if a correction is made to the airport surface map, the position of the new intersection or new taxiway is automatically recalculated based on this correction, making it easy to change the airport surface map. The device is obtained.

In the present embodiment, the example of the airport plane map creating apparatus is shown, but the present invention can be applied to the case of creating a general road map.

[0213]

As described above, according to the first aspect of the present invention, an intersection can be automatically created, and a road map creating apparatus capable of creating a road map by a simple operation can be obtained.

According to the second aspect of the present invention, since the position of a newly input road is automatically corrected, it is possible to obtain a road map creating apparatus capable of creating an accurate road map by a simple operation.

According to the third aspect of the present invention, the structure of the road connecting to the intersection becomes clear. As a result, it is possible to obtain a road map creation device that can create a road map that can clearly identify whether it is a road or an intersection.

The fourth aspect of the present invention is similar to the third aspect of the present invention only in the object of division, and the effect is the same.

According to the fifth aspect of the present invention, since the search for the neighborhood of the input road is succeeding, a road map creating apparatus capable of quick processing can be obtained.

According to the sixth aspect of the present invention, it is possible to obtain a road map display device in which the width of a road is displayed realistically.

According to the seventh aspect of the present invention, it is possible to obtain a road map display device capable of making a realistic display even when the widths of roads connected to an intersection are different.

According to the eighth aspect of the present invention, an intersection plane is automatically prepared, and an airport plane map preparation apparatus capable of preparing an airport plane map by a simple operation can be obtained.

According to the ninth aspect of the present invention, the position of the taxiway to be newly input is automatically corrected, so that an airport surface map creating apparatus capable of creating an accurate airport surface map with a simple operation can be obtained. .

According to the tenth invention, the structure of the taxiway connecting to the intersection is clarified. As a result, it is possible to obtain an airport plane map creation device that can create an airport plane map that can clearly identify whether it is a taxiway or an intersection.

The eleventh aspect of the invention is similar to the third aspect of the invention only in the object of division, but the effect is the same.

According to the twelfth aspect of the present invention, since the search in the vicinity of the input taxiway is succeeding, the airport plane map preparation device capable of rapid processing can be obtained.

According to the thirteenth aspect of the present invention, it is possible to obtain an airport plane map display device in which the width of a taxiway is displayed in a realistic manner.

According to the fourteenth aspect of the present invention, it is possible to obtain an airport surface map display device capable of displaying a realistic image even when the width of each taxiway connected to an intersection is different.

According to the fifteenth aspect of the present invention, an intersection is automatically created, and a road map creating method capable of creating a road map by a simple operation can be obtained.

According to the sixteenth aspect of the present invention, since the position of a newly input road is automatically corrected, a road map creating method capable of creating an accurate road map by a simple operation can be obtained.

According to the seventeenth invention, the structure of the road connecting to the intersection becomes clear. As a result, it is possible to obtain a road map creation method capable of creating a road map that can clearly identify whether it is a road or an intersection.

The eighteenth aspect of the invention is similar to the third aspect of the invention only in the object of division, but the effect is the same.

According to the nineteenth aspect of the present invention, since a search for the neighborhood of the input road is performed subsequently, a road map creating method capable of quick processing can be obtained.

According to the twentieth aspect of the present invention, it is possible to obtain the road map display method in which the width of the road is displayed realistically.

According to the 21st aspect of the present invention, it is possible to obtain a road map display method capable of making a realistic display even when the widths of roads connected to an intersection are different.

According to the 22nd aspect of the present invention, an airport surface map creating method is provided in which an intersection is automatically created and an airport surface map can be created by a simple operation.

According to the twenty-third aspect of the present invention, since the position of the taxiway newly input is automatically corrected, an airport surface map creating method capable of creating an accurate airport surface map with a simple operation can be obtained. .

According to the 24th aspect of the present invention, the structure of the taxiway connected to the intersection is clarified. As a result, it is possible to obtain an airport surface map creation method capable of creating an airport surface map that can clearly identify whether it is a taxiway or an intersection.

The twenty-fifth aspect of the invention is similar to the third aspect of the invention only in the object of division, but the effects are the same.

According to the twenty-sixth aspect of the present invention, since the search in the vicinity of the input taxiway is succeeding, the airport plane map creating method capable of rapid processing can be obtained.

According to the 27th aspect of the present invention, there is provided an airport plane map display method in which the width of a taxiway is displayed in a realistic manner.

According to the twenty-eighth aspect of the present invention, it is possible to obtain an airport surface map display method capable of making a realistic display even when the width of each taxiway connected to an intersection is different.

[Brief description of drawings]

FIG. 1 is a configuration block diagram showing a configuration of an airport plane map creation device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing types of airport plane map generation operations in the airport plane map creation apparatus according to the present embodiment.

FIG. 3 is an explanatory diagram of a table showing facilities and their shapes displayed in the airport plane map created in the present embodiment.

FIG. 4 is an explanatory diagram showing how an intersection is automatically generated when a new taxiway is created near an existing taxiway.

FIG. 5 is an explanatory diagram illustrating generation of an intersection when only one rounded portion occurs when the intersection is generated.

FIG. 6 is an explanatory diagram illustrating generation of an intersection when an intermediate point of a taxiway to be newly created is located near an end point of an existing taxiway.

FIG. 7 is an explanatory diagram showing generation of an intersection when the position of the intermediate point of the taxiway is prioritized over the existing end point C in the case of FIG. 6;

FIG. 8 is an explanatory diagram showing generation of an intersection when a composite taxiway and a taxiway to be newly created intersect.

9 is an intersection C of the composite taxiway in the case of FIG.
FIG. 6 is an explanatory diagram showing a state in which a plurality of intersections are generated based on a plurality of intersections C, C ′, C ″ when the distance of the taxiway to be newly created is equal to or more than a certain value.

FIG. 10 is an explanatory diagram showing generation of an intersection when an existing taxiway and a taxiway to be newly created intersect each other at their midpoints.

FIG. 11 is an explanatory diagram showing generation of an intersection when an end point of a taxiway to be newly created is located inside an existing intersection.

FIG. 12 is an explanatory diagram showing the generation of an intersection when one of the rounding portions for a taxiway to be newly created is included inside an existing intersection.

FIG. 13 is an explanatory diagram showing the generation of an intersection when an endpoint of a taxiway to be newly created exists near the intersection C of an existing intersection.

FIG. 14 shows a case where a new taxiway is provided to an existing taxiway and a T-shaped intersection is generated, and a predetermined intersection shape is used when the existing taxiway and the new taxiway have the same road width. It is an explanatory view showing how a road width is added and displayed.

FIG. 15 is an explanatory diagram showing the shape of each portion forming the intersection shown in FIG.

FIG. 16 is an explanatory diagram showing a width of a member forming an intersection and a display form thereof when the road width of the new taxiway is narrower than the road width of the existing taxiway.

FIG. 17 is an explanatory diagram showing the width of each element of the intersection and the display state of the intersection when the road width of the new taxiway is wider than the road width of the existing taxiway.

FIG. 18 is an explanatory diagram showing a state where an intersection is displayed when a new taxiway has a wider road width than an existing taxiway and the new taxiway and the existing taxiway intersect each other at an intermediate point. is there.

FIG. 19 is an explanatory diagram of a positional relationship between a composite taxiway and a new taxiway that intersects with the composite taxiway.

FIG. 20 is an explanatory diagram showing a state of rounding between one component Tx1 of the composite taxiway and a line segment se representing a newly created taxiway.

FIG. 21: Tx2, a component of an existing composite taxiway
It is explanatory drawing showing the mode of the rounding performed between and the line segment se showing the guide way which should be newly created.

FIG. 22: Tx1 and Tx which are components of the existing taxiway
It is explanatory drawing showing the mode of rounding concerning 2.

23 is an explanatory diagram showing the position of each taxiway newly generated in the example shown in FIG.

FIG. 24 is an explanatory diagram showing the final shapes of a newly created taxiway and a newly created rounding portion in the example shown in FIG. 19;

FIG. 25 is an explanatory diagram showing a state in which an arbitrary polygon and quadrangle are generated by the airport plane map creation device according to the present embodiment.

FIG. 26 is an explanatory diagram showing how the arbitrary polygon or quadrangle generated in FIG. 25 is changed.

FIG. 27 is a diagram showing an airport plane map creating device according to the present embodiment, when performing display by stacking equipment in multiple layers.
It is explanatory drawing showing a map structure.

FIG. 28 is an explanatory diagram showing a display graphic and its graphic database structure when the number of taxiways is one.

FIG. 29 is an explanatory diagram showing the structure of a display graphic of a composite taxiway consisting of three components and its graphic database.

FIG. 30 is an explanatory diagram showing a display graphic and a graphic database structure in the case where two taxiways intersect each other at an intersection C and the rounding portion is one Na.

FIG. 31 is an explanatory diagram showing display graphics and graphic database structures of various patterns when the number of taxiways is three or more and the number of intersections is one.

FIG. 32 is an explanatory diagram showing a display graphic and a graphic database structure when the number of taxiways is three or more and the number of intersections is two or more.

FIG. 33 is an explanatory diagram showing a display graphic and a graphic database structure when the total number of taxiways and composite taxiways is three or more and the number of intersections is one.

FIG. 34 is an explanatory diagram showing a display graphic and a graphic database structure when the total number of taxiways and complex taxiways is three or more and the number of intersections is two or more.

FIG. 35 is an explanatory diagram showing a configuration of mesh data.

FIG. 36 is an explanatory diagram showing a table forming zone data and an arrangement of each zone area.

[Fig. 37] Fig. 37 is an explanatory diagram of a case where a partial display is speeded up by using a zone area.

[Fig. 38] Fig. 38 is an explanatory diagram illustrating an operation when a nearby facility is searched by using zone data.

FIG. 39 shows a raster-scan display device.
It is explanatory drawing showing the mode when an intersection shape is displayed.

FIG. 40 is an explanatory diagram illustrating a case where the shape of the taxiway is partially deformed using an arbitrary shape.

FIG. 41 is an explanatory diagram illustrating an operation of a select map.

FIG. 42 is an explanatory diagram showing a relationship between a select map and a default map.

FIG. 43 is an explanatory diagram showing how an intersection is created by a conventional road map creation device.

[Fig. 44] Fig. 44 is an explanatory diagram illustrating an operation when searching for nearby equipment using zone data.

[Explanation of symbols]

20 input device, 22 position information input unit, 24 facility search unit, 26 intersection calculation unit, 28 facility database, 3
0 center line connection processing unit, 32 facility information storage unit, 34
Display processing unit, 36 display device, 38 mesh data generation unit, 40 mesh data, 42 input device, 44
Parameter input section, 46 parameter storage section, 50 airport plane map, 52 select map, 54 default map, 56 facility data, 58 area data.

 ─────────────────────────────────────────────────── ─── Continued Front Page (54) [Title of Invention] Road map creation device, road map display device, airport surface map creation device, airport surface map display device, road map creation method, road map display method, and airport surface Map creation method and airport surface map display method

Claims (28)

[Claims] 1. A road map creating apparatus for creating a road map by representing a road by its center line, input means for inputting data of a center line of a road newly added to the road map, and a road to be created. In the map, in the vicinity of the center line of the input new road, search means for searching whether or not there is a center line of the existing road provided in the road map; When a center line of an existing existing road is found, an intersection creating means for providing an intersection between the two roads based on the positional relationship between the entered center line of the road and the center line of the existing road The intersection creating means includes an arc calculating means for calculating an arc contacting both the center line of the existing road and the center line of the newly input road, and the arc Road map creating apparatus characterized by comprising a intersection registration means for registering in the road map as the center line of the satin, a. 2. The intersection calculation unit is newly input when a value of a distance between the center line of the existing road and the center line of the newly input road is within a predetermined range. The road map creation device according to claim 1, further comprising a correction unit that brings a position of a center line of a road closer to a position of a center line of the existing road. 3. The intersection creating means calculates an intersection between the center line of the existing road and the center line of the newly input road, and an intermediate point of the center line of the existing road. , If it is located near the end point of the center line of the newly input road,
A dividing unit that divides the center line of the existing road at the intersection and registers it as two center lines in the road map, two center lines divided by the dividing unit, and the newly input Second arc calculating means for calculating, for each set, an arc that is in contact with the two centerlines of each set for any two sets of these centerlines. The road map creation device according to claim 1 or 2, further comprising: 4. The intersection creating means, an intersection calculating means for obtaining an intersection between a center line of the existing road and a center line of the newly input road, and a center line of the newly input road. When the midpoint is located near the end point of the center line of the existing road,
A dividing unit that divides the center line of the newly input road at the intersection and registers it as two center lines in the road map; two center lines that are divided by the dividing unit; With respect to the center line of the road, the second arc calculating means for calculating, for each of the two sets of the center lines, arcs in contact with the two center lines of the respective sets. The road map creation device according to claim 1 or 2, further comprising: 5. A zone managing unit that manages the road map for each predetermined zone region, and stores a road included in each zone region for each zone region. A first zone region including the newly input road,
And a zone search means for searching the road included in the first and second zone areas stored in the zone management means with respect to the second zone area adjacent to the first zone area, if necessary. The road map creation device according to claim 1, 2 or 3 or 4. 6. A road map display device that creates a road map by representing a road by its center line and displays the created road map, wherein the center line of the road is translated to the left and right by half the width of the road. An offset line creating means for creating the left offset line and the right offset line, and a width road display means for displaying the left offset line and the right offset line and capable of displaying a road map expressing a road width, An offset arc creating means for creating an offset arc that is in contact with both the offset line of one road connected to the intersection and the offset line of another road connected to the same intersection, and concentric with the offset arc. An offset arc creating unit with a width that creates an offset arc with a width that is separated from the offset arc by the road width. , The offset arc and displays the offset arc with the width, road map display apparatus comprising: the wide-conditioned intersection display means for displaying a road map intersection width is expressed, the. 7. The offset arc with width creating means creates an offset arc with width separated from the offset arc by the smaller road width of the road widths of the roads that are the basis of the offset line with which the offset arc touches. The road map display device according to claim 6, which is created. 8. An airport plane map creation device for creating an airport plane map by expressing a taxiway with its center line, and input means for inputting data of a taxiway center line newly added to the airport plane map, In the airport plane map to be created, a search for searching whether or not the centerline of the existing taxiway provided in the airport plane map exists near the centerline of the newly input taxiway Means, when the center line of the existing taxiway existing in the vicinity by the search means is found, based on the positional relationship between the input center line of the taxiway and the center line of the existing taxiway, An intersection creating means for providing an intersection between both taxiways, wherein the intersection creating means is an arc that is in contact with both the center line of the existing taxiway and the center line of the newly input taxiway. Circle to calculate An airport plane map creation device comprising: an arc calculation means; and an intersection registration means for registering the arc as a center line of the intersection in the airport plane map. 9. The intersection calculation means newly inputs the value of the distance between the center line of the existing taxiway and the center line of the newly input taxiway within a predetermined range. 9. The airport surface map creation device according to claim 8, further comprising: a correction unit that brings the position of the center line of the generated taxiway closer to the position of the center line of the existing taxiway. 10. The intersection creating means, when the midpoint of the center line of the existing taxiway is located near the end point of the center line of the newly input taxiway, Intersection calculating means for obtaining an intersection between a taxiway centerline and the newly input taxiway centerline; and the airport as two centerlines by dividing the existing taxiway centerline at the intersection. With respect to the dividing means registered in the surface map, the two centerlines divided by the dividing means, and the newly input centerline of the taxiway, any two of these centerlines are registered. The airport surface map creation according to claim 8 or 9, further comprising: second arc calculating means for calculating, for each set, an arc that is in contact with two center lines of each set. apparatus. 11. The intersection creating means is configured to, when the midpoint of the newly input center line of the taxiway is located near an end point of the center line of the existing taxiway, to generate the existing road. Intersection calculating means for obtaining an intersection between the center line of the taxiway and the centerline of the newly input taxiway, and two centerlines by dividing the centerline of the newly input taxiway at the intersection As to the dividing means for registering in the airport plane map as, the two centerlines divided by the dividing means, and the centerline of the existing taxiway, any two sets of these centerlines 10. The airport surface map creation device according to claim 8 or 9, further comprising: second arc calculating means for calculating, for each set, an arc that is in contact with two center lines of each set. . 12. A means for managing the airport surface map for each predetermined zone area, including zone management means for storing a taxiway included in each zone area for each zone area, the search The means stores the first zone area including the newly input taxiway and the second zone area adjacent to the first zone area as necessary, the first zone area being stored in the zone management means. And zone search means for searching the taxiway included in the second zone area.
1. The airport surface map creation device described in 1. 13. An airport surface map display device for creating an airport surface map by expressing a taxiway with its center line and displaying the created airport surface map, wherein the taxiway center line is moved to the left and right. Offset line creating means for creating a left offset line and a right offset line, which are translated by half the width, and the left offset line and the right offset line may be displayed to display an airport surface map expressing the taxiway width. Creating an offset arc that creates an offset arc that contacts both the widthed taxiway display means, the offset line of one road that connects to the same intersection, and the offset line of another road that connects to the same intersection And means for creating an offset arc with a width that is concentric with the offset arc and is separated from the offset arc by the guideway width An airport plane map display device, comprising: a fuset arc creating means; and a widthwise intersection display means for displaying the offset arc and the widthwise offset arc and for displaying an airport plane map expressing an intersection width. . 14. The offset arc forming means with width is separated from the offset arc by a smaller guide path width of the guide path widths of the centerline on which the offset arc is in contact and which is the basis of the offset line. 14. The airport surface map display device according to claim 13, wherein the offset arc with width is created. 15. A road map creating method for creating a road map by expressing a road by its center line, an input step of inputting data of a center line of a road newly added to the road map, and a road to be created. In the map, in the vicinity of the center line of the input new road, a search step of searching whether or not the center line of the existing road provided in the road map exists; When the center line of the existing existing road is found, an intersection creating step of providing an intersection between the two roads based on the positional relationship between the entered center line of the road and the center line of the existing road The intersection creating step calculates an arc that is in contact with both the center line of the existing road and the center line of the newly input road. An intersection registration step of registering the arc as a center line of the intersection in the road map, the method of creating a road map. 16. The intersection input step is newly input when a value of a distance between the center line of the existing road and the center line of the newly input road is within a predetermined range. 16. The road map creating method according to claim 15, further comprising a correcting step of bringing a position of a center line of a road closer to a position of a center line of the existing road. 17. The intersection creating step includes an intersection calculating step of obtaining an intersection between the center line of the existing road and the center line of the newly input road, and an intermediate point of the center line of the existing road. , If it is located near the end point of the center line of the newly input road,
A dividing step of dividing the center line of the existing road at the intersection and registering the two as center lines in the road map, and two center lines divided in the dividing step,
With respect to the newly input center line of the road, for any two sets of these center lines, an arc contacting the two center lines of each set is calculated for each set. A second circular arc calculating step, and the road map creating method according to claim 15 or 16. 18. The intersection creation step comprises: an intersection calculation step of obtaining an intersection between the center line of the existing road and the center line of the newly input road; and a step of calculating the center line of the newly input road. When the midpoint is located near the end point of the center line of the existing road,
A dividing step of dividing the center line of the newly input road at the intersection point and registering it in the road map as two center lines; and two center lines divided in the dividing step.
A second arc for calculating, with respect to the center line of the existing road, an arc that is in contact with the two center lines of each set for each two sets of these center lines, for each set. The road map creating method according to claim 15 or 16, further comprising: a calculating step. 19. A zone managing step of managing the road map for each predetermined zone area, the zone managing step of storing a road included in each zone area in a storage means for each zone area, The searching step includes a first zone area including the newly input road,
And a zone searching step for searching the road included in the first and second zone areas stored in the storage means in the zone managing step with respect to the second zone area adjacent to the first zone area as necessary. The road map creating method according to claim 15, 16 or 17 or 18, characterized by including: 20. A road map display method for creating a road map by representing a road by its center line and displaying the created road map, wherein the center line of the road is translated left and right by half the width of the road. An offset line creating step of creating the left offset line and the right offset line, and a road display step with a width that can display the road map expressing the road width by displaying the left offset line and the right offset line; Of the offset line of one road connected to the intersection of, and an offset arc creation step of creating an offset arc that contacts both the offset line of the other road connected to the same intersection, and the same as the offset arc An offset arc with a width that creates an offset arc with a width that is separated from the offset arc by the road width. An arc generating step, the offset arc and displays the offset arc with the width, road map display method characterized by comprising a width with intersection display step of displaying the road map intersection width is expressed, the. 21. The step of creating an offset arc with a width includes an offset arc with a width separated from the offset arc by the smaller road width of the road widths of the roads that are the basis of the offset line with which the offset arc is in contact. 21. The road map display method according to claim 20, which is created. 22. An airport plane map creating method for creating an airport plane map by expressing a taxiway with its center line, wherein an input step of inputting data of a taxiway center line newly added to the airport plane map, In the airport plane map to be created, a search for searching whether or not the centerline of the existing taxiway provided in the airport plane map exists near the centerline of the newly input taxiway Step, when the center line of the existing taxiway existing in the vicinity in the search step is found, based on the positional relationship between the center line of the input taxiway and the center line of the existing taxiway, An intersection creating step of providing an intersection between both taxiways, and the intersection creating step, wherein both the centerline of the existing taxiway and the centerline of the newly input taxiway are included. An airport plane map creation method comprising: a circular arc calculation step of calculating a circular arc in contact with the intersection; and an intersection registration step of registering the circular arc in the airport surface map as a center line of the intersection. 23. In the intersection calculating step, if the value of the distance between the center line of the existing taxiway and the center line of the newly input taxiway is within a predetermined range, the new input is performed. 23. The airport surface map creating method according to claim 22, further comprising: a correcting step of bringing a position of a centerline of the taxiway that has been created closer to a position of a centerline of the existing taxiway. 24. In the intersection creating step, when the midpoint of the center line of the existing taxiway is located near the end point of the center line of the newly input taxiway, An intersection calculation step of obtaining an intersection between a taxiway centerline and the newly input taxiway centerline, and dividing the existing taxiway centerline at the intersection to obtain two airport centerlines. A dividing step registered in the face map, and two center lines divided in the dividing step,
With respect to the newly input center line of the taxiway, for any two groups of these center lines, calculate an arc that is in contact with the two center lines of each group for each group. The method for creating an airport surface map according to claim 22 or 23, further comprising: 25. In the step of creating an intersection, if the midpoint of the center line of the newly input taxiway is located near the end point of the center line of the existing taxiway, the existing An intersection point calculating step of obtaining an intersection point between a taxiway centerline and the newly input taxiway centerline; and two centerlines by dividing the newly input taxiway centerline at the intersection point. A dividing step of registering in the airport plane map as the above, and two center lines divided in the dividing step,
Secondly, with respect to the center line of the existing taxiway, for any two sets of these center lines, an arc that is in contact with the two center lines of each set is calculated for each set. The method of creating an airport surface map according to claim 22 or 23, further comprising: an arc calculating step. 26. A zone managing step of managing the airport surface map for each predetermined zone area, the zone managing step storing a taxiway included in each zone area in a storage means for each zone area. In the searching step, the first zone area including the newly input taxiway and the second zone area adjacent to the first zone area are stored in the storage means in the zone managing step, if necessary. 26. The airport surface map display method according to claim 22, 23, 24, or 25, further comprising: a zone search step of searching for the taxiway included in the first and second zone areas being performed. 27. An airport surface map display method for creating an airport surface map by expressing a taxiway with its center line, and displaying the created airport surface map, wherein the taxiway center line is moved to the left and right. An offset line creating step of creating a left offset line and a right offset line that are translated by half the width, and displaying the left offset line and the right offset line, and displaying an airport plane map expressing the taxiway width Creating an offset arc that creates an offset arc that touches both the width taxiway display step, the offset line of one road that connects to the same intersection, and the offset line of another road that connects to the same intersection A step of creating an offset arc with a width that is concentric with the offset arc and is separated from the offset arc by the guideway width. And a widthwise intersection arc displaying step of displaying the offset arc and the widthwise offset arc, and displaying an airport surface map expressing an intersection width. Map display method. 28. The step of creating the offset arc with width is separated from the offset arc by a smaller guide path width of the taxiway widths of the centerline on which the offset arc is in contact. 28. The airport surface map display method according to claim 27, wherein an offset arc with a width is created.