JP5449646B2 - Position information calculation method and program - Google Patents

Description

  In the present invention, when a position is numerically input in a GIS, a car navigation system, a portable navigation system, or the like, not only the work speed is increased but also errors are reduced. In order to realize this, a home position and a home position area are set in the contents disclosed in the 1998 Japanese Patent Application No. 376026 name “World Mesh Code Creation Method and World Mesh Code”, and an arbitrary number in the area is set. The present invention relates to a program for automatically calculating a unit number when the unit number at the point is omitted.

  In the conventional location information technology, a method such as an address, a place name, or a target cannot meet the requirement of accurately expressing any place. For that purpose, latitude and longitude are used as a global representation method. However, the latitude and longitude are suitable for expressing the position of the sphere, but it is difficult to use because it is in the 60's system, and is not used by ordinary people. And since the unit length of latitude and longitude is different, it is not suitable as a coordinate system for measuring distance and area. For this reason, plane rectangular coordinates (X, Y coordinates) in which a sphere is regarded as a pseudo plane are used for surveying. However, since the sphere is forcibly regarded as a plane, distortion occurs as it goes to the periphery, and it cannot be used as a wide area coordinate. For this reason, there are 19 coordinate origins throughout Japan, and several prefectures share one origin, and there is no problem if the same origin is used, but the positional relationship with coordinates with different origins is I can say that I don't understand at all. In other words, it is a coordinate system that cannot be used when the entire country of Japan needs to be represented continuously, such as in car navigation systems.

  In addition, it is desired to digitize location information because it is very inefficient to rely on conventional addresses and place names for location information in various situations such as disaster prevention, crime prevention, logistics, etc. In order to meet these needs, a new coordinate system that has never existed is required. However, this new coordinate system must satisfy several conditions. First, compatibility with the prior art is required. This is because it would be a problem if a huge amount of location information assets stored in GIS (geographic information system) or the like cannot be used. Since most of the coordinate systems that serve as backgrounds in these GIS are basically latitude and longitude, compatibility with latitude and longitude is an essential condition.

  In addition, since it is easy for anyone to understand, it must be in decimal notation and integer display. And it is required to be able to express as accurately as possible with a small number of digits. Invented in order to satisfy such a condition is Japanese Patent Application No. 376026 named “World Mesh Code Creation Method and World Mesh Code”.

    In the present invention, Japanese Patent Application No. 376026 named “World Mesh Code Creation Method and World Mesh Code” in “World Mesh Code” is “N Code”, “Mesh Number” is “Unit Number”, “ The name “fine mesh number” is changed to “mesh number”.

    If you look at the contents of the disclosure, you can specify the exact position in decimal integer display anywhere using the N code, and you can shorten the number of digits with just the mesh number by omitting the block number and mesh number on a daily basis. The contents are disclosed.

  Certainly, in the case of Osaka City, where the city is in the center of the unit as shown in Fig. 1, the block number and unit number are always the same for administrative use. There is no problem even if it is omitted during the input work. However, in an area on the boundary line between the units, for example, in the city of Kobe in FIG. Then, there is a problem of always having to assign unit numbers, and there are many municipalities that come on such boundaries. Therefore, the advantage of the N code cannot be exhibited only by the disclosed contents.

  Also, when N codes are used in navigation systems such as car navigation systems and portable navigation systems, when searching for a destination when the vehicle position is near the boundary of the unit, the unit number spans two, especially near the intersection. Four unit numbers will come out. Not only is it troublesome to have to enter the unit number each time, but there is a problem that mistakes are likely to occur.

In recent years, a large number of information magazines such as restaurants, job offers, housing information, etc. have been published, and in particular, the number of free information magazines called free papers has recently increased. The position information occupies a very important position in these information magazines. The current method of expressing location information basically uses addresses, but since the addresses are local information with no regularity, it is often known only to nearby residents. For this reason, these information magazines often have a map of several centimeters square called a frame map. However, because these maps are limited in size due to space constraints, these maps are small in size and can only be roughly represented. Intersections that are not right angles are represented at right angles, and road thickness expressions are also different from actual ones. There are many maps that are deformed or have a very different sense of distance. Furthermore, the direction of the map is not always north, and mappers are struggling to make it easier to understand when there are no easy-to-understand landmarks nearby. Naturally, the cost of cartography also increases. As a result, advertisers who publish continuously can keep the map price per map low, but there is also a problem that it is difficult to attach a map with a single advertisement, which is very difficult for the user for the difficulty of the creator The fact is that it is difficult to understand and has a bad reputation. For this reason, it has become an issue for information magazine producers to inform readers of their location in an easy-to-understand manner.
1998 Japanese Patent Application No. 376026 Name “World Mesh Code Creation Method and World Mesh Code”

  As a method for digitizing positional information that has been recently sought, the N code can be used to accurately represent the position in decimal integer display and with a small number of digits while maintaining consistency with latitude and longitude. It is considered desirable to use this method. However, in reality, the convenience of the N code cannot be fully utilized only by the disclosed contents. This is because the unit number cannot be omitted in the vicinity of the unit boundary line. Accordingly, an object of the present invention is to provide a technique that allows unit information to be omitted on a daily basis at any position so that position information can be exchanged using only a mesh number.

  A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; And calculating a unit number of the searched point from the mesh number of the searched point in a home position area when the unit number is input in a state where the unit number is omitted. The step of calculating the unit number includes the following steps: calculating the range of the four ranges obtained by dividing the unit including the home position into four parts, east-west and north-south. Whether the search target point is within or outside the boundary of the unit to which the home position belongs A determination calculation step, and using the calculation result of the step, a determination result of whether the search point is within or outside a boundary of a unit to which the home position belongs, and which search point is in the home position area And a step of calculating a unit number using a result of calculating whether the unit exists. A position information calculating method is provided.

  In the navigation system, when a position acquired by the navigation system at the time of movement is set as a home position, and a position within the home position area is set as a destination, a unit number is calculated using the position information calculation method according to claim 1. The destination can be set by inputting only the mesh number.

  In the geographic information system (GIS), when the position information calculation method according to claim 1 is used and an arbitrary point is set as the home position, the unit number is not required to be input in the home position area, thereby improving work efficiency. .

  The display of the position of a printed matter such as an information magazine is simplified by using an information display method of a display form in which the unit number is not displayed and the position information is displayed only with the mesh number.

  The display contents are simplified by an information display object in a display form in which the unit number is not displayed and the position information is displayed only with the mesh number.

  2. The position information calculation method using a mesh code according to claim 1, wherein the mesh number is obtained from information on a display form in which the unit number is omitted and the position information is displayed only with the mesh number.

A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions. A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; And a step of calculating a unit number of the search target point from a mesh number of the search target point in a home position area when the unit number is input in a state where the unit number is omitted. The step of calculating the unit number includes the following steps: calculating the range of the four ranges obtained by dividing the unit including the home position into four parts, east-west and north-south. The searched point is within the boundary of the unit to which the home position belongs. Using the calculation result of the step, the determination result whether the search target point is within the boundary of the unit to which the home position belongs, and the search target point of the home position area A position information calculation program characterized by including a step of calculating a unit number using a result of calculating which unit is present.

  The size of the N code unit is about 50 km square in the vicinity of Japan, and as described above, the home position area has almost the same size. Therefore, almost all municipalities fit in one home position area. Therefore, even in a municipality that spans four units, as in the case of Kobe City mentioned above, for example, if the position of the city hall is set as the home position, the unit number is automatically calculated as long as the mesh number is entered. Therefore, it is not necessary to be aware of the unit number in normal business.

  In car navigation systems, the conventional destination designation method for car navigation systems is to search for addresses, facility names, postal codes, telephone numbers, and the like. However, when the address is input from the prefecture selection to the address, a number of steps are required. Even in the case of the facility name, a process such as genre or region is required, and a one-shot search is not possible. In the case of postal code search, the number of digits is as small as 7 digits, but since it can be specified only at the town level, it is not useful as a practical problem. In addition, phone number search is possible with a 10-digit number, but it is possible to perform one-shot search, but recently the hit rate has decreased with the spread of mobile phones and IP phones, and there is also an entanglement with the Personal Information Act The fact is that the search efficiency is not very good because it is necessary to input the name in addition to the telephone number.

On the other hand, if the current location acquired by the car navigation system is always set to the home position automatically, the unit number will be automatically determined in about 50km square centered on the car. Except for special cases such as long-distance travel, it is not necessary to enter a unit number for destination input. Then, not only can a single search be performed with an accuracy of 5 m with 8-digit input, but also the risk of incorrect unit numbers is reduced.
As described above, the method that can perform a one-shot search with an 8-digit number with high accuracy is a far superior method compared to other methods, and can be expected to greatly enhance the convenience of the navigation system.

  In addition, for example, when a research institute in a university in Kyoto conducts an environmental survey in Shimane Prefecture, if a large amount of point data is collected in the survey area, the position of the home position is not the position of the laboratory in Kyoto. By setting the vicinity of the center of the point as the home position, the unit number can be omitted, so that the input work is greatly improved. In this way, many operations can be made more efficient by making it possible to easily change the home position to any desired point.

  When the home position function is used, the unit number can be omitted when the area is limited, so 8-digit numbers are entered in area-specific information magazines such as restaurants, job offers, and housing information magazines. It is possible to accurately represent the position with an accuracy of 5 m. Therefore, an N code using the home position is used as supplementary information for the address and frame map, which is position information of a conventional information magazine. When this code is input to a map site of a mobile phone or a personal computer, a map of a desired position is displayed. Then, the map screen of mobile phones has the disadvantage that the screen is smaller and difficult to see compared to car navigation etc., but it is much larger than the frame map of information magazines, it is possible to change the scale and more accurate map Can be placed. If you use a personal computer, you can see a more detailed map, zooming, and a greater degree of freedom. Therefore, it is easy for the user to know the rough position on the small scale screen and view the details on the large scale screen. A more convenient function will be provided if the N code is adopted in the road map.

N code is
As shown in FIG. 2, the surface of the earth is divided by a line (1a) along a meridian at every longitude of 60 degrees to form (3) in six zones;
As shown in FIG. 3, each zone (3) is further divided into 100 equal parts by a line (1b) along a longitude line every 36 minutes to form a band (4). Adding east-west numbers from 00 to 99 towards the east,
As shown in FIG. 4, the east-west width (W) at an arbitrary latitude of the band (4) is obtained by multiplying the east-west width (W1) of longitude 36 minutes on the equator by the cosine value of the latitude. Based on
As shown in FIG. 5, the distance between the lines (2a) along the adjacent latitude line is the same as the east-west width (W) of the band (4) of the part, and adjacent to the line (2a) along the adjacent latitude line. In the south and northern hemispheres, the equator (5) is the starting point and 150 latitude lines are sequentially arranged so that each grid-like unit (6) formed by the line (1b) along the meridian that is Drawing a line (2) along;
As shown in FIG. 3, among the lines (2) along the 150 latitude lines, the boundary (2) along the 50th latitude line south and north across the equator (5), Dividing each zone (3) into three blocks in the north-south direction;
As shown in FIG. 6, assigning a block number (8) to each of the 18 blocks (7) in total;
Giving each unit (6) in each block (7) a north-south number from 00 to 99 in order from the north end in the north-south direction;
A step of setting the unit number (9) to a four-digit number in which the east-west number and the north-south number shown in FIG.
Each unit (6) shown in FIG. 8 is further subdivided into a line (1c) along the meridian for subdivision and a line (2d) along the parallels, and each mesh (10) is east-west. And adding a mesh number (11) or coordinate number in the north-south direction;
The position information is expressed by sequentially arranging the numbers (8, 9, 11) including.

  Tables 1 and 2 show the relationship between the east-west numbers from 00 to 99 in order from the west end of each unit (6) in each block (7) in the east-west direction and the west end longitude of each unit based on the above-mentioned creation method Is an example showing

  Tables 3 to 7 show the relationship between the north-south numbers assigned from 00 to 99 in order from the north end of each unit (6) in each block (7) in the north-south direction and the north-end latitude of each mesh. It is an example which shows. In this example, the north end latitude of each unit is specified, but the south end latitude may be specified.

  In the examples of Tables 3 to 7, the northern latitude is 10 seconds, but it may be 5 seconds or 1 second.

  FIG. 7 shows a state in which unit numbers are written on a map of the Kanto region based on the above method. As can be seen in the figure, 23 wards of Tokyo, Kawasaki, and Yokohama are contained in 4986 units. Compared to the telephone area code, you can see that a single unit can cover a much larger area.

  FIG. 8 shows how to apply a mesh when the inside of the unit is further divided into 10000 equal parts from east to west and north and south in this example.

  For this reason, as in the case of the telephone area code, it is usually possible to express the position only by the mesh number by omitting the unit number. It is disclosed in “Mesh Code Creation Method and World Mesh Code”.

  However, as shown in FIG. 1, since Osaka city is located at the center of the unit number 4288, it is usually possible to omit this unit number. There are four unit numbers in the city because there are intersections. Then, if the unit number is always required to distinguish the four unit numbers to indicate the position, the N code is not convenient for the Kobe citizen.

  If an arbitrary point P is set as the home position due to the nature of the N code, there is a region where the same mesh number does not appear within a certain range centered on that point. Therefore, the present invention pays attention to this and calls it the home position area. In this area, the unit number is automatically determined even if the unit number is omitted when searching for a position in a personal computer or car navigation system. Build up. A program for calculating the home position and the home position area is shown below.

    Assume that the position of an arbitrary P point is designated by a block number, a unit number, and a mesh number. In the following description, it is assumed that Japan is the target, and the block number is fixed at 6A at the time of input. The unit numbers are expressed as A for east and west, B for north and south, and A and B as unit numbers. The mesh numbers are X and Y respectively in the east-west and north-south directions. In the following, the case where X and Y are four-digit numerical values will be described.

    In FIG. 9, there are no other points where the mesh numbers are X and Y, respectively, even if the units straddle as shown in the region S less than 10000 from north to south, centering on the home position P point. Therefore, this area S is referred to as a home position area, and a method for setting the area and a method for calculating a unit number of an arbitrary point Q in the area are provided.

Since the home position area is almost the same size as the unit area, if the home position P is deviated from the center of the unit, the home position area S protrudes from the surrounding units. The protruding method varies depending on the part of P shown in FIG.
FIG. 11 shows a case where P is in B, that is, when X> 5000 and Y <5000, the east end portion of the region S straddles the east side unit in the figure, and the north end portion straddles the north unit in the figure. The mesh numbers (12a), (12b), (12c), and (12d) of the east, west, south, and north boundary lines of the region S are values surrounded by a square frame.

  Similarly, FIGS. 12 to 14 are explanatory diagrams of the home position area when the position of P is in B, C, and D, respectively.

Next, FIG. 15 shows that when the position of the home position P is in the range of a, the unit number is calculated when the mesh number of an arbitrary point Q in the home position area is X1, Y1. The program is shown below.
(1) When 0 ≦ X1 <X−5000 and Y + 5000 ≦ Y1 <10000, since Q is in the range of (Yes), the unit numbers are (A + 1) and (B−1).
{Circle around (2)} When 0 ≦ X1 <X−5000 and 0 ≦ Y1 <Y + 5000, Q is in the range of (B), and its unit numbers are (A + 1) and B.
{Circle around (3)} When X−5000 ≦ X1 <10000 and Y + 5000 ≦ Y1 <10000, since Q is in the range of (), the unit numbers are A and (B-1).
(4) In the case of X−5000 ≦ X1 <10000 and 0 ≦ Y1 <Y + 5000, Q is in the range of (ni), and the unit numbers are A and B.

Even when the home position P is in the above-mentioned b, c, d, there are four unit numbers in the home position area in the same way, and the unit number is calculated by dividing into cases similar to the above. It will be.
Each range has an equal sign on one side and no equal sign on the other, but this is a process for making both ends the same number, and may be attached to the opposite side.

In the above description, the mesh numbers X and Y each have 4 digits. In the description, the width of the region S from east to west, north and south is 10,000, and if it is n digits, this is 10 ^n. The same calculation can be performed by.

Although it is desirable that the home position area can be set as wide as possible, the same effect can be expected even if the area is set narrower than the area S. For example, since the size of the unit 4288 in Osaka is about 55 km square, it is conceivable that the 50 km square is the home position area as a convenient method. However, due to the nature of the N code, the unit size decreases as the latitude increases. For example, the unit size in Sapporo is less than 50 km square. Then, if 50 km square is set as the home position area, two or more same mesh numbers exist in the area, and the unit number cannot be uniquely determined only by the mesh number.
In addition, there is a difference between the unit of length of 50 km and the unit of N code as well as whether the size of the area must be specified each time. Therefore, it is apparent that the range of 50 km is actually specified. Even if it looks simple, there is a drawback that programming it becomes quite complicated. Therefore, the home position is set in such a manner that it is possible to easily set an area having the strictest maximum area utilizing the characteristics of the N code.

  When using an N code in a navigation system such as a car navigation system, it is inconvenient at a fixed home position. This is because the vehicle does not know where it will move throughout Japan. The most suitable home position in this case is the current location of the vehicle or mobile phone. By doing so, the position of the home position moves with the movement of the car, and the area also moves. However, it is always unnecessary to enter the unit number in a place within about 50 km square centering on the current position. In this case, it is a very convenient function because only the mesh number needs to be entered. However, assuming special usage, there may be a function that can set any point as the home position. In the case of a pedestrian navigation system using a mobile phone, it can be said that, in view of its range of action, it is practically possible to save the trouble of inputting a unit number.

  FIG. 16 shows a method for expressing a position in a conventional free paper or the like. For example, in restaurants, job offers, housing information magazines, etc., if there are more than 4 frames on the A4 page, information such as stores is described by being divided into 20 frames or more. Each address has an address. In the case of division up to about 8 frames, a frame map is often attached to each. However, it becomes difficult to attach a map to a piece that has been further divided. In addition, even if the space is large, there is a relationship with the cost of map production, so small advertisers have to put up with only the address, and it is difficult to get to the store because there is no map.

On the other hand, when an N code is used, an 8-digit N code is described, and the map may be configured to be viewed on a map site of a mobile phone or a personal computer except for a frame map. The reason why only the 8-digit mesh number is written in each top position display is that an information magazine such as a free paper can use the home position function because the distribution destination area is limited.
For example, in the case of free paper distributed in Kobe city, it is only necessary to indicate it on the cover of the Kobe city version. In the case of Osaka, for example, a 4288 version may be displayed on the cover.

  Since the unit number is the same number as the telephone number, it can be easily described in a frame divided into more than 20 parts. Information can be transmitted. Then, an advertiser who has conventionally placed a frame map can also remove the frame map from a limited space and effectively use the space.

  In addition, when the N code written in the information magazine is used for inputting the destination of the car navigation system, the car navigation system automatically guides the customer to the store in a pinpoint, and only the advantage that the location is easy for the user to understand. In addition, the store side is expected to increase the number of visitors, so that the information magazine issuer can provide a new added value to the advertiser, so it can be expected to raise the advertising fee.

  Furthermore, it becomes possible for information magazine publishers to manage advertiser location information as simple digital information. This not only makes it easier for users to find a store, but when a sales employee of an information magazine visits a customer, when a new employee visits a customer's store, a visit can be made without being taught. Furthermore, since the location can be clearly understood, an efficient visit plan can be created, so that the number of stores visited per day can be increased. Conventionally, customer location information, which was the know-how of each salesman, can be shared as a company. This is a very effective tool for companies where the baby boomer veteran salesman is retiring and new employees are unable to reach the customer's company smoothly and are concerned about reduced work efficiency. Since this N code has a mesh structure, the area can be freely changed to 50 m, 500 m, and 5 km by simply selecting the number of digits, which is suitable for statistical processing. This makes it an effective tool for marketing.

As described above, when a numerical code is placed in the position information of an information magazine, not only users but also advertisers and publishers can provide great benefits.
These information magazines may be paid as well as free, and may be leaflets or pamphlets.

  It is a figure which shows the relationship with the unit number of the part containing Osaka city and Kobe city.   It is a conceptual diagram which shows the state which divided | segmented the whole earth surface into six zones by the line along the meridian for every longitude 60 degree | times in the implementation process of the production method of the N code concerning this invention.   It is a conceptual diagram which shows the state which divided | segmented one zone shown in FIG. 2 into 100 belt | band | zones by the line along the meridian for every longitude 36 minutes.   It is a conceptual diagram which shows the east-west width | variety formed in the longitude (delta) part on the line along the latitude line in the position of the latitude (theta) in the implementation process of the production method of the N code concerning this invention.   FIG. 3 is an enlarged view of a portion surrounded by a round frame shown in FIG. 2, and is a conceptual diagram showing a unit.   It is a conceptual diagram which shows the state which divided | segmented the whole earth surface into 18 blocks in the implementation process of the N code production method concerning this invention.   It is a conceptual diagram which shows the unit of the Kanto area when what includes Japan in the block shown in FIG. 6 is further divided into 100 equal east-west and north-south units.   FIG. 8 is a conceptual diagram showing a state in which a unit including Chiyoda Ward among the units shown in FIG.   It is a conceptual diagram which shows that the same mesh number does not appear in a fixed range centering on an arbitrary point as a home position.   It is a conceptual diagram explaining that a home position area | region changes with which range of a unit the position of a home position exists.   It is a conceptual diagram explaining a home position area | region when a home position exists in the range of (a) of FIG.   It is a conceptual diagram explaining a home position area | region when a home position exists in the range of b of FIG.   It is a conceptual diagram explaining a home position area | region when a home position exists in the range of c of FIG.   It is a conceptual diagram explaining a home position area | region when a home position exists in the range of d of FIG.   It is a conceptual diagram which shows a mode that a unit number changes with the position of the arbitrary points Q in a home position area | region.   In the conventional information magazine, it is a conceptual diagram which shows the example which described the top map with the address information with the address.

Table 1

~

Table 2

  It is an example that lists the longitude of the west end of the unit.

Table 3

  This is an example in which the N code creation rule is extended to the Arctic Circle in the list showing the northernmost latitude of the unit.

Table 4

~

Table 6

  It is an example that lists the northernmost latitude of the unit.

Table 7

  This is an example in which the N code creation rule is extended to the Arctic Circle in the list showing the northernmost latitude of the unit.

Explanation of symbols

1- along the meridian 1a- line along the meridian 1b- line along the meridian 1c- line along the meridian 1d- line along the meridian 2- line along the latitude 2a-line along the latitude 2b- Line along latitude line 2c- Line along latitude line 2d- Line along latitude line 2e- Line along latitude line 3-Zone 4-Band

Claims (4)

A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions. A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; If entered by the mesh number in a state in which the unit number is omitted, in the position information calculation method to obtain Preparations and calculating the unit number of the search target location than the mesh number of the search point home position region There,
The step of calculating the unit number includes the following steps:
Calculating in which range of four ranges the home position is divided into four units divided from east to west and north and south into units including the home position;
Determining and calculating whether the search point is within or outside the boundary of a unit to which the home position belongs;
Using the calculation result of the step, the determination result of whether the searched point is within or outside the boundary of the unit to which the home position belongs, and in which unit in the home position area the searched point exists Calculating the unit number using the calculated result ; and
The position information calculation method characterized by including . A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions. A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; A step of calculating a unit number of the searched point from a mesh number of the searched point in a home position area when the unit number is input in a state where the unit number is omitted,
The step of calculating the unit number includes the following steps:
Calculating in which range of four ranges the home position is divided into four units divided from east to west and north and south into units including the home position;
Determining and calculating whether the search point is within or outside the boundary of a unit to which the home position belongs;
Using the calculation result of the step, the determination result of whether the searched point is within or outside the boundary of the unit to which the home position belongs, and in which unit in the home position area the searched point exists Calculating the unit number using the calculated result; and
A navigation system comprising: A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions. A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; And a step of calculating a unit number of the searched point from a mesh number of the searched point in a home position area when the unit number is input in a state where the unit number is omitted. ,
The step of calculating the unit number includes the following steps:
Calculating in which range of four ranges the home position is divided into four units divided from east to west and north and south into units including the home position;
Determining and calculating whether the search point is within or outside the boundary of a unit to which the home position belongs;
Using the calculation result of the step, the determination result of whether the searched point is within or outside the boundary of the unit to which the home position belongs, and in which unit in the home position area the searched point exists Calculating the unit number using the calculated result; and
A geographic information system characterized by including: A number of blocks that are numbered to divide the earth into 6 east and west directions along longitude and longitude lines every 60 degrees and at least 3 along the latitude lines in the north and south directions, and each of the blocks is approximately east and west and north and south directions. A plurality of numbered units each divided into 100 squares, and a plurality of numbered meshes each divided into 10n (n is an integer) in a substantially square shape in the east-west direction and the north-south direction. The position information is displayed using a mesh code that displays the position by a combination of the block number of the block, the unit number of the unit, and the mesh number of the mesh. Receiving the block number, the unit number, and the mesh number at a point; and Setting a home position area having the same number of meshes as the number of meshes divided into 10n in the east, west, south, and north with the home position as the center; If entered by the mesh number in a state in which the unit number is omitted, in the position information calculation program to obtain Bei and calculating the unit number of the search target location than the mesh number of the search point home position region There,
The step of calculating the unit number includes the following steps:
Calculating in which range of four ranges the home position is divided into four units divided from east to west and north and south into units including the home position;
Determining and calculating whether the search point is within or outside the boundary of a unit to which the home position belongs;
Using the calculation result of the step, the determination result of whether the searched point is within or outside the boundary of the unit to which the home position belongs, and in which unit in the home position area the searched point exists Calculating the unit number using the calculated result ; and
Position information calculation program, which comprises a.

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