JP2017075810A - Ground information system, ground analysis device, ground information processing method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ground information system that can transmit information on ground deformation high in usefulness quickly.SOLUTION: On the basis of a coordinate of a satellite positioning signal reception antenna calculated based on a satellite positioning signal received from a location observation satellite by each of a plurality of satellite positioning signal reception antennas fixedly installed at a plurality of different points in a national land, a ground information system is configured to: specify a closed region that is composed of a side of each base line linking each point of three or more points to be judged adjacent of respective points and deforms equal to or more than a reference threshold for a reference period in a linking base line net on a region plane; and output a ground analysis result that has the specified closed region changed in a display state different from other closed region, and includes display information with the base line net overlapped on the national land.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ground information system, a ground information processing method, and a program.

  It is known to use position information of an observation point called an electronic reference point when analyzing information on the ground of the country. For example, Patent Documents 1 and 2 disclose information processing techniques using position information of electronic reference points.

Japanese Patent Laying-Open No. 2015-52578 Japanese Patent No. 48467979

  Although tracking of the ground can be detected by tracking the position of the electronic reference point as in Patent Document 1 described above, a more useful device has been demanded.

  Accordingly, an object of the present invention is to provide a ground information system, a ground information processing method, and a program that solve the above-described problems.

  According to the first aspect of the present invention, the ground information system receives a satellite positioning signal received from a position observation satellite by each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area. A satellite positioning signal receiving means, an antenna position calculating unit for calculating coordinates of the satellite positioning signal receiving antenna based on the satellite positioning signal, and each of three or more points determined to be adjacent among the points In the base line network in which the closed areas formed by the sides of the base line are connected in the area plane, the specifying unit for specifying the closed area that fluctuates more than the reference threshold during the reference period, and the display state of the specified closed area with another closed area is changed. And an analysis result output unit for outputting a ground analysis result including display information obtained by superimposing the base line network on the national land area.

  Further, in the ground information system described above, the specifying unit may be configured to use a base line in which the coordinates of the satellite positioning signal receiving antennas respectively located at the end points of the base line change more than a reference threshold during a reference period in the base line network. The analysis result output unit outputs a ground analysis result including display information obtained by superimposing the base line network on the national land area by changing the display state of the specified base line with another base line. Also good.

  Further, in the above ground information system, the specifying unit specifies a closed region that generates a distortion greater than a reference threshold in a reference period among the closed regions constituting the baseline network, and the analysis result output unit specifies A ground analysis result including display information obtained by superimposing the base line network on the national land area by changing the display state of the closed area from another closed area may be output.

  Further, in the above ground information system, the specifying unit specifies a closed region that generates an area variation of a reference threshold or more in a reference period among the closed regions constituting the baseline network, and the analysis result output unit specifies It is also possible to change the display state of the closed area with another closed area and output a ground analysis result including display information in which the base line network is superimposed on the land area.

  Further, in the above ground information system, when the closed region is a closed region formed by a base line connecting four or more points, the closed region is divided into triangular regions, and the triangular region is used as a reference threshold value during a reference period. It may be determined whether or not it has fluctuated, and the specifying unit may specify a closed region including a triangular region that fluctuates more than a reference threshold during a reference period.

  Further, in the above ground information system, each of the satellite positioning signal receiving antennas based on the reference time receiving means for receiving the reference time used for calculating the 24-hour average, and the satellite positioning signal for 24 hours and the reference time. And a center-orthogonal coordinate calculating means for calculating the 24-hour average center-orthogonal coordinate at the fixedly installed position.

  According to the second aspect of the present invention, in the ground information processing method, the satellite positioning signals received from the position observation satellites by the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area are obtained. Receiving, calculating coordinates of the satellite positioning signal receiving antenna based on the satellite positioning signal, and a closed region constituted by sides of each base line connecting three or more points determined to be adjacent among the points. The closed area that is defined as one side of the base line that connects the three or more points determined to be adjacent to each other among the points is specified in the base line network that is continuous in the area plane, and the closed area that changes more than the reference threshold value in the reference period. The closed region of the baseline network that is connected in the region is identified as a closed region that fluctuates more than a reference threshold value during a reference period, and the display state of the identified closed region is changed from the other closed regions to the country. And it outputs the soil analysis result including the display information of repeating the baseline network in the region.

  According to the third aspect of the present invention, the program stores a computer constituting the ground information system, wherein each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area has a position observation satellite. A closed region constituted by the sides of each base line connecting three or more points determined to be adjacent among the points based on the coordinates of the satellite positioning signal receiving antenna calculated based on the received satellite positioning signals A specifying means for specifying the closed region that fluctuates more than a reference threshold value in a reference period in a base line network that is continuous on a region plane; It functions as an analysis result output means for outputting a ground analysis result including the displayed information.

  ADVANTAGE OF THE INVENTION According to this invention, the information of the fluctuation | variation of the highly useful ground can be conveyed rapidly.

It is a block diagram which shows the structure of a ground information system. It is a functional block diagram of a ground analysis device. It is a figure which shows the processing flow of a ground analysis apparatus. It is a figure which shows the calculation outline | summary of a geodetic coordinate and an ellipsoid height. It is explanatory drawing of ellipsoidal height. It is a figure which shows the example of a calculation result table. It is a figure explaining the parameter used for the calculation type | formula calculated to the distortion of a closed area | region. It is a figure which shows a baseline network. It is a 1st figure which shows an example of display data. It is a 2nd figure which shows an example of display data. It is a figure which shows the example of an output of the ground deformation | transformation analysis result of an ellipsoidal height.

Hereinafter, a ground analysis device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a configuration of a ground information system according to the embodiment. In this figure, reference numeral 1 denotes a ground analysis device. Reference numeral 2 denotes a coordinate measuring device. Reference numeral 10 denotes a satellite positioning signal receiving antenna. Reference numeral 20 denotes a satellite positioning signal receiver.
In the ground information system, the satellite positioning signal receiving antennas 10 are distributed and fixedly installed at a large number of points, for example, over 1200 points in the whole of Japan (national land area), and the satellite positioning signal receiving antennas are received from GPS satellites. The satellite positioning signal receiving device 20 receives the received satellite positioning signal via the communication network. The plurality of coordinate measuring devices 2 are connected to the satellite positioning signal receiving device 20 and the ground analysis device 1 via a communication network. The coordinate measuring device 2 receives from the satellite positioning signal receiving device 20 each satellite positioning signal receiving antenna 10 a satellite positioning signal (a signal transmitted by GPS) received from a GPS satellite, and fixes each satellite positioning signal receiving antenna 10. Detect the installed position. Based on the calculated position of each satellite positioning signal receiving antenna 10, the 24-hour average geocentric Cartesian coordinates, the 24-hour average ellipsoidal height, and the 24-hour average horizontal movement of the specific satellite positioning signal receiving antenna 10 are calculated. The coordinate measurement device 2 or the ground analysis device 1 may calculate the ground fluctuation such as the amount and the ground height fluctuation amount averaged for 24 hours. The ground analysis device 1 may include each function of one or more coordinate measuring devices 2.

FIG. 2 is a functional block diagram of the coordinate measuring device and the ground analysis device.
As shown in this figure, the ground analysis device 1 includes a communication processing unit 11, a control unit 12, an antenna position calculation result receiving unit 13, a ground fluctuation analysis unit 14 (specific part), and a ground fluctuation result output unit 15 (analysis result output). Section), database 16, and reference time notification section 17. The communication processing unit 11 is a processing unit that transmits and receives information via a communication network. The control unit 12 is a processing unit that controls each processing unit of the ground analysis device 1. The antenna position calculation result receiving unit 13 is a processing unit that receives information on the calculation result of the antenna position from the coordinate measuring device 2. Based on the information on the antenna position calculation result received from the coordinate measuring device 2, the ground fluctuation analysis unit 14 uses geodetic coordinates and the like with the center of gravity of the earth corresponding to the position where the satellite positioning signal receiving antenna 10 is fixedly installed as the origin. The processing unit calculates information that can determine the ground fluctuation amount of the fixedly installed position. The ground change result output unit 15 is a processing unit that outputs information on the average ground change for 24 hours at predetermined intervals based on the information calculated by the ground change analysis unit 14. The database 16 stores information on the calculation result of the antenna position received by the antenna position calculation result receiving unit 13, information calculated by the ground fluctuation analysis unit 14, and the like. The reference time notifying unit 17 is a processing unit for notifying the coordinate measuring device 2 of a reference time for the coordinate measuring device 2 to calculate 24-hour average information of the ground fluctuation at the position where each satellite positioning signal receiving antenna 10 is fixedly installed. It is.

  As shown in FIG. 2, the coordinate measuring apparatus 2 includes a communication processing unit 21, a control unit 22, a satellite positioning signal receiving unit 23, an antenna position calculation unit 24, an antenna position calculation result output unit 25, and a database 26. . The communication processing unit 21 is a processing unit that communicates with the satellite positioning signal receiving device 20 and the ground analysis device 1. The control unit 22 is a processing unit that controls each processing unit of the coordinate measuring apparatus 2. The satellite positioning signal receiving unit 23 receives a satellite positioning signal received from the GPS satellite by the satellite positioning signal receiving antenna 10 via the satellite positioning signal receiving device 20 obtained by collecting from the satellite positioning signal receiving antenna 10. It is. The antenna position calculation unit 24 is a processing unit that calculates geocentric orthogonal coordinates and ellipsoidal heights indicating the fixed positions of the satellite positioning signal receiving antennas 10 based on the satellite positioning signals. The antenna position calculation result output unit 25 is a processing unit that outputs information calculated by the antenna position calculation unit 24 to the ground analysis device 1. The database 26 stores data of satellite positioning signals received by the satellite positioning signal receiving antenna 10 and information such as geocentric orthogonal coordinates and ellipsoidal heights indicating the fixed positions of the satellite positioning signal receiving antennas 10 in association with each other. This is a storage unit.

In the ground information system according to the present embodiment, each of the plurality of satellite positioning signal receiving antennas 10 fixedly installed at a plurality of different points in the land area receives the satellite positioning signals received from the position observation satellites. The ground information system calculates the coordinates of the satellite positioning signal receiving antenna 10 based on the satellite positioning signal. In the ground information system, a closed area that varies by more than a reference threshold during a reference period in a base line network in which closed areas formed by base lines connecting three or more points determined to be adjacent to each other are connected in the area plane. Is identified. The ground information system outputs a ground analysis result (display data) including display information obtained by changing the display state of the specified closed region to another closed region and overlaying a base line network on the national land region.
Through such processing, the ground information system quickly conveys information on highly useful ground changes to the world such as scholars, weather information distribution companies, surveying companies, and construction companies.

  In the ground information system, a plurality of coordinate measuring devices 2 and a ground analyzing device 1 are connected via a communication network, and each of the plurality of coordinate measuring devices 2 is connected to the communication network and fixedly installed at a plurality of different points. Each of the plurality of satellite positioning signal receiving antennas 10 receives the satellite positioning signals received from the position observation satellites (GPS satellites) via the communication network, and the ground analysis device 1 calculates the average of 24 hours related to the calculation target. The reference time used for the calculation is received, and based on the received satellite positioning signals for 24 hours and the reference time, the geocentric orthogonal coordinates of the 24-hour average at the fixed positions of the satellite positioning signal receiving antennas 10 are calculated. To do. The ground analysis device 1 notifies each of the plurality of coordinate measuring devices 2 of the reference time used for calculating the 24-hour average related to the calculation object with a predetermined interval shifted, and the different coordinate measuring devices 2 to 24 are changed at predetermined intervals. The geocentric orthogonal coordinates of each of the plurality of time-averaged satellite positioning signal receiving antennas 10 are received, and the 24-hour average geocentric orthogonal coordinates at a predetermined interval at each fixed position of each satellite positioning signal receiving antenna 10. The process which outputs the geocentric orthogonal coordinate fluctuation result which shows is performed.

  In the ground information system, each of the coordinate measuring devices 2 is determined in a predetermined position at a fixed position of each of the satellite positioning signal receiving antennas 10 based on the geocentric orthogonal coordinates of each of the satellite positioning signal receiving antennas 10 and the reference time. The average ellipsoidal height for 24 hours for each interval may be calculated. At this time, the ground analysis device 1 performs a process of outputting an ellipsoidal height fluctuation result indicating an average ellipsoidal height for 24 hours at predetermined intervals at each fixed position of the satellite positioning signal receiving antenna 10.

  The ground information system is configured so that the ground analysis device 1 uses a predetermined 24-hour average geocentric Cartesian coordinate for each predetermined interval of the satellite positioning signal receiving antennas 10 to calculate a predetermined corresponding to each geocentric orthogonal coordinate. A 24-hour average horizontal movement amount for each interval may be calculated. At this time, the ground analysis device 1 outputs a horizontal movement amount fluctuation result displaying a calculation result of the 24-hour average horizontal movement amount for each predetermined interval at each fixed position of the satellite positioning signal receiving antenna 10. I do.

In the ground information system, the ground analysis device 1 is configured so that each satellite positioning signal receiving antenna 10 is fixedly installed on the basis of the average ellipsoidal height for 24 hours at a predetermined interval at the position where each satellite positioning signal receiving antenna 10 is fixedly installed. A 24-hour average ground height fluctuation amount for each predetermined interval at the determined position is calculated, and a 24-hour average ground height fluctuation amount for each predetermined interval at each fixed position of the satellite positioning signal receiving antenna 10 is calculated. You may perform the process which outputs the ground height fluctuation amount fluctuation result which displayed the result.
And the ground analysis apparatus 1 performs the process which outputs the output result for urgently determining the location where a big disaster generate | occur | produces in an observer's desired time by such a process.

FIG. 3 is a diagram showing a processing flow of the ground analysis apparatus.
FIG. 4 is a diagram showing an outline of calculation of geodetic coordinates and ellipsoidal height.
FIG. 5 is an explanatory diagram of the height of the ellipsoid.
FIG. 6 is a diagram illustrating an example of a calculation result table.
Next, details of the processing of the ground analysis device will be described with reference to FIGS.
The satellite positioning signal receiving device 20 receives a satellite positioning signal (for specifying geo-orthogonal coordinates) received from a GPS satellite by the satellite positioning signal receiving antenna 10 from a satellite positioning signal receiving antenna 10 all over Japan via a communication network. Signal) via a communication network. For example, the satellite positioning signal receiving antenna 10 is fixedly installed at 1200 points throughout Japan, and the satellite positioning signal receiving device 20 receives satellite positioning signals from the satellite positioning signal receiving antenna 10 at intervals of 30 seconds. The satellite positioning signal receiving unit 23 of the coordinate measuring device 2 receives the satellite positioning signal received by the satellite positioning signal receiving device 20 every predetermined time (for example, every 10 minutes) (step S101).

  The antenna position calculation unit 24 of the coordinate measuring device 2 uses a satellite positioning signal for 24 hours at intervals of 30 seconds received by the satellite positioning signal receiving antennas 10 at a plurality of points among the received satellite positioning signals. A net average calculation is performed (step S102). The triangular network is an aggregate of triangles formed by connecting straight lines as vertices of three triangular points at a plurality of positions where the satellite positioning signal receiving antennas 10 are installed. The net average calculation is a calculation method in which position data is determined by performing a least-squares method on the positions of the vertices of the triangles under constraint conditions such as corner conditions and edge conditions. Such network average calculation is described in detail in, for example, “Theory of Least Squares Method and Its Application” (Tajima Kei et al., Toyo Shoten).

  By performing such calculation by the antenna position calculation unit 24, the geocentric orthogonal coordinates (X, Y, Z) of the satellite positioning signal receiving antenna 10 at the plurality of points are determined using the triangular network of the specified points. The positioning signal is calculated for each reception time (step S103). The antenna position calculation unit 24 sequentially calculates the geocentric orthogonal coordinates (X, Y, Z) for each satellite positioning signal reception time in the same manner for the positions where the other satellite positioning signal receiving antennas 10 are fixedly installed. . This geocentric Cartesian coordinate calculation process is performed by dividing the 1200 points where the satellite positioning signal receiving antennas 10 are arranged throughout Japan into 39 groups, and the satellite positioning signals received by the satellite positioning signal receiving antennas 10 for each group. The processing for calculating the geocentric orthogonal coordinates (X, Y, Z) of the satellite positioning signal receiving antennas 10 in the group may be performed sequentially for each group. In calculating geocentric Cartesian coordinates, IGS points are calculated using international geodetic reference points (IGS points; Tsukuba TSKB, Usuda USUD, Beijing BJFS, Shanghai SHAO, Taiwan Taoyuan TWTF, Guam GUAM) around Japan (land area). You may make it calculate a center orthogonal coordinate (X, Y, Z) by performing a net | network average calculation with the triangular network containing. Still further, in calculating the geocentric orthogonal coordinates, not only in the vicinity of Japan, but using a plurality of IGS points around the world, a network average calculation is performed using a triangular network including these IGS points, and geocentric orthogonal coordinates are calculated. (X, Y, Z) may be calculated. The antenna position calculation unit 24 uses the geocentric orthogonal coordinates (X, Y, Z) of each satellite positioning signal receiving antenna 10, the ID of the corresponding satellite positioning signal receiving antenna 10, and the satellite positioning signal from the satellite positioning signal receiving antenna 10. Is registered in the database in association with the time of receiving (step S104).

After calculating the geocentric orthogonal coordinates (X, Y, Z) of each satellite positioning signal receiving antenna 10, the antenna position calculating unit 24 calculates the height of the ellipsoid of each satellite positioning signal receiving antenna 10 for each reception time of the satellite positioning signal. (Step S105). As shown in FIG. 4 and FIG. 5, the ellipsoidal height connects the point where the straight line intersects the earth ellipsoid and the center of gravity of the earth from the distance of the straight line connecting the geocentric orthogonal coordinates (X, Y, Z) and the center of gravity of the earth. It can be calculated from a value obtained by subtracting the distance of the straight line. It is assumed that the distance between the earth's center of gravity and the straight line connecting the point where the straight line connecting the geocentric orthogonal coordinates (X, Y, Z) and the earth's center of gravity intersects the earth ellipsoid and the earth's center of gravity is a known value. The antenna position calculation unit 24 calculates the ellipsoidal height at the geocentric orthogonal coordinates (X, Y, Z) of each satellite positioning signal receiving antenna 10 from the ID of the corresponding satellite positioning signal receiving antenna 10 and the satellite positioning signal receiving antenna 10. It is registered in the database in association with the time when the satellite positioning signal is received (step S106).
Based on the satellite positioning signals received at predetermined intervals, the antenna position calculation unit 24 has geocentric orthogonal coordinates (X, Y, and X) at predetermined intervals at positions where the satellite positioning signal receiving antennas 10 are fixedly installed. Z) and the ellipsoidal height values are continuously calculated for each satellite positioning signal reception time. The antenna position calculation unit 24 calculates the geocentric orthogonal coordinates (X, Y, Z) and the ellipse of each satellite positioning signal receiving antenna 10 at predetermined time intervals shorter than 24 hours, not every satellite positioning signal reception time. You may make it calculate the value of body height.

  Each coordinate measuring device 2 has previously received a notification of a reference time for calculating a 24-hour average of geocentric orthogonal coordinates and a 24-hour average of ellipsoidal height from the reference time notification unit 17 of the ground analysis device 1. For example, if each coordinate measuring device 2 shown in FIG. 1 is eight coordinate measuring devices 2A, 2B, 2C,..., 2H, the reference time for the coordinate measuring device 2A is 9:00, and the coordinate measuring device 2B For the coordinate measuring device 2C, the reference time is 12:00, for the coordinate measuring device 2C, the reference time is 15:00, for the coordinate measuring device 2D, the reference time is 18:00, and so on, for the coordinate measuring device 2H. The ground analysis device 1 notifies each of the coordinate measurement devices 2A to 2H of the reference time shifted by 3 hours, which is 6 o'clock. The antenna position calculation unit 24 of each coordinate measurement device 2 detects that the timer of the time measurement processing unit has reached the reference time when the notification is received, and among the geocentric orthogonal coordinates and the ellipsoidal height calculated by the above processing, Read from the database 26 information for every predetermined time (every 10 minutes) calculated from the previous day's reference time to the current day's reference time, calculate the 24-hour average of the geocentric orthogonal coordinates and ellipsoidal heights read, In the database 26, the antenna ID of the satellite positioning signal receiving antenna 10 to be calculated is registered in association with the 24-hour average of the geocentric orthogonal coordinates and the ellipsoidal height. The antenna position calculation result output unit 25 of each coordinate measuring device 2 is based on the request from the ground analysis device 1 and calculates the average of the geocentric orthogonal coordinates and the ellipsoidal height for each satellite positioning signal receiving antenna 10 at predetermined intervals. Send.

  The ground analysis device 1 stores the antenna ID of the satellite positioning signal receiving antenna 10 located in the analysis target area based on information received by an administrator's input or the like in order to analyze the ground fluctuation in a certain area. The transmitted antenna position request information is transmitted to each coordinate measuring device 2. Each coordinate measuring device 2 transmits to the ground analyzing device 1 the 24-hour average of the geocentric orthogonal coordinates and the ellipsoidal height registered in the database 26 in association with the antenna ID based on the reception of the antenna position request information. The ground analysis device 1 stores the time range designation information in the antenna position request information, and obtains the 24-hour average geocentric orthogonal coordinates and ellipsoidal height calculated in the time zone designated by the time range from the coordinate measurement device 2. You may make it receive. Accordingly, the ground analysis device 1 uses, for example, the coordinate measuring device 2A to obtain the data of the center-of-the-centre orthogonal coordinates and the ellipsoidal height of the time range designation information from 9:00 to 8:59 on the next day. From 12:00 to 11:59 on the next day, 24 hour average geocentric orthogonal coordinates and ellipsoidal height data are received from the coordinate measuring device 2B, and from 15:00 to 14:00 on the next day Receives the 24-hour average geocentric orthogonal coordinates and ellipsoidal height data up to 59 minutes from the coordinate measuring device 2C, and similarly measures the 24-hour average geocentric orthogonal coordinates and ellipsoidal height data based on the reference time. Receive from devices 2D-2H.

  The ground fluctuation analysis unit 14 of the ground analysis device 1 has a 24-hour average geocentric Cartesian coordinate (X, Y) for each predetermined interval (3 hours which is a deviation of the reference time) received separately from each coordinate measurement device 2. , Z), the 24-hour average of the horizontal movement amount of each satellite positioning signal receiving antenna 10 due to the shift of the geocentric orthogonal coordinates (X, Y, Z) at every predetermined interval (every 3 hours) is calculated. Calculate (step S107). The ground fluctuation analysis unit 14 calculates the 24-hour average of the horizontal movement amount for each predetermined interval, the ID of the satellite positioning signal receiving antenna 10 that is the calculation target of the horizontal movement amount, and the 24-hour average of the horizontal movement amount. The 24-hour average of the geocentric Cartesian coordinates used in the above and the time when the geocentric Cartesian coordinates are received are associated with each other and registered in the database 16 (step S108). The horizontal movement amount of the 24-hour average is the same as the 24-hour average of the geocentric orthogonal coordinates of the satellite positioning signal receiving antenna 10 (X1, Y1, Z1), and the same satellite positioning signal receiving antenna 10 after a predetermined interval from that time. When the 24-hour average of the geocentric orthogonal coordinates of (X2, Y2, Z2) is (X2-X1, Y2-Y1).

  Based on the reception of the average ellipsoidal height for 24 hours for each predetermined interval received from each coordinate measuring device 2, the ground fluctuation analysis unit 14 performs the ellipsoidal height for each predetermined interval (every 3 hours in the present embodiment). The 24-hour average of the ground height fluctuation amount of each satellite positioning signal receiving antenna 10 due to the deviation is calculated (step S109). The ground fluctuation analysis unit 14 averages the ground height fluctuation amount for each predetermined interval for 24 hours, the ID of the satellite positioning signal receiving antenna 10 that is the calculation target of the ground height fluctuation quantity, and 24 of the ground height fluctuation amount. The 24-hour average of the ellipsoidal height used for calculating the time average and the time when the ellipsoidal height is received are associated with each other and registered in the database 16 (step S110). The 24-hour average ground height variation is the average of the ellipsoidal height of the satellite positioning signal receiving antenna 10 at a certain time (D1), and the ellipse of the same satellite positioning signal receiving antenna 10 after a predetermined interval from that time. When the average of the body height for 24 hours is (D2), it is (D2-D1). In the above description, it has been described that the ground fluctuation analysis unit 14 receives the geocentric Cartesian coordinates (X, Y, Z) averaged for 24 hours every predetermined interval (3 hours which is a deviation of the reference time). The interval may be 24 hours and may be received every 24 hours. In this case, the ground fluctuation analysis unit 14 performs the 24-hour average of the geocentric orthogonal coordinates, the 24-hour average of the ground height fluctuation amount, and the satellite positioning signal that is the calculation target of the ground height fluctuation amount at every 24 hour interval. The ID of the receiving antenna 10, the 24-hour average of the ellipsoidal height used for calculating the 24-hour average of the ground height fluctuation amount, and the time when the ellipsoidal height is received are registered in the database 16 in association with each other. .

  The calculation result table shown in FIG. 6 shows the geocentric orthogonal coordinates, the ellipsoidal height, the horizontal movement amount, and the ground height fluctuation amount calculated by the above-described processing every three hours, which is a predetermined interval, for each satellite positioning signal receiving antenna 10. Is a data table for storing In FIG. 6, at 12:00 on January 1, 2008 (20080101011200) at the position where the satellite positioning signal receiving antenna 10 having the antenna ID “00001” is fixedly installed, the 24-hour average of the geocentric orthogonal coordinates is ( X1, Y1, Z1), the 24-hour average of ellipsoidal height is (D1), the 24-hour average of horizontal movement is (no value), the 24-hour average of ground height fluctuation is (no value), and the satellite At 15:00 (200801101500) on January 1, 2008 at the position where the positioning signal receiving antenna 10 is fixedly installed, the 24-hour average of geocentric orthogonal coordinates is (X2, Y2, Z2), and the 24-hour average of ellipsoidal height (D2), the 24-hour average of horizontal movement is (X2-X1, Y2-Y1), the 24-hour average of ground height fluctuation is (D2-D1), and the satellite positioning signal At 18:00 on January 1, 2008 (200801011800) at the position where the receiving antenna 10 is fixedly installed, the 24-hour average of geocentric coordinates is (X3, Y3, Z3), and the 24-hour average of ellipsoidal height is ( D3), the 24-hour average of the horizontal movement amount is (X3-X2, Y3-Y2), and the 24-hour average of the ground height fluctuation amount is (D3-D2).

  The ground fluctuation analysis unit 14 acquires, from the database 16, a 24-hour average of the geocentric orthogonal coordinates calculated most recently for one satellite positioning signal receiving antenna 10. The 24-hour average of the geocentric orthogonal coordinates is referred to as the first geocentric orthogonal coordinates. The ground deformation analysis unit 14 is a database of the 24-hour average of geocentric orthogonal coordinates calculated one day before (24 hours before) the 24-hour average of geocentric orthogonal coordinates calculated most recently for the same satellite positioning signal receiving antenna 10. 16 from. The 24-hour average of the geocentric orthogonal coordinates is referred to as second geocentric orthogonal coordinates. The ground fluctuation analysis unit 14 calculates the distance between the first geocentric orthogonal coordinate and the second geocentric orthogonal coordinate. The ground fluctuation analysis unit 14 determines whether the difference between the first geocentric orthogonal coordinate and the second geocentric orthogonal coordinate is equal to or greater than a reference threshold. As the reference threshold value, for example, 3 cm is assumed.

  When the difference between the first geocentric orthogonal coordinate and the second geocentric orthogonal coordinate is equal to or greater than the reference threshold, the difference between the first geocentric orthogonal coordinate and the second geocentric orthogonal coordinate is 24. It shows that the time fluctuated by 3 cm or more. If the difference between the first geocentric orthogonal coordinate and the second geocentric orthogonal coordinate is greater than or equal to a reference threshold, the ground fluctuation analysis unit 14 determines the satellite positioning signal at the position of the first geocentric orthogonal coordinate. A base line connecting the receiving antenna 10 and the satellite positioning signal receiving antenna 10 at the position of the second geocentric orthogonal coordinates is specified. The specification of the baseline is an aspect of specifying a closed region that fluctuates more than a reference threshold value in the reference period. The ground fluctuation analysis unit 14 further determines whether the specified baseline has fluctuated (stretched) longer than the reference threshold or fluctuated (shrinked) short. The ground fluctuation analysis unit 14 records the identified base line identification information and the fluctuation identification information indicating whether the base line has fluctuated longer or shorter than the reference threshold in the database 16.

  The database 16 includes identification information of a closed region formed by linking vertices of three or more points determined to be adjacent to each other among a plurality of points indicating the position of the satellite positioning signal receiving antenna 10, and An analysis result table is stored in which the identification information of the base line constituting the closed region and the fluctuation identification information of the base line are held in association with each other. Each point and base line constituting the closed region may be determined in advance or may be arbitrarily determined. When the closed region connects the three points in a ring shape, the closed region indicates a triangle. In the closed region that connects the four points in a ring shape, the closed region indicates a quadrangle. The ground analysis device 1 according to the present embodiment specifies a square closed region that connects each point in a ring shape by using each point of the satellite positioning signal receiving antenna 10 installed in the land area, and identifies identification information of the closed region. Mainly stored in the analysis result table. The ground analysis device 1 specifies a closed region of a triangle when a quadrangular closed region that connects each point of the satellite positioning signal receiving antenna 10 in a ring shape cannot be formed, and stores identification information of the closed region in the analysis result table. The ground fluctuation analysis unit 14 determines whether or not the length of each base line constituting all the closed regions has fluctuated by the reference threshold (3 cm) or more in the reference period (24 hours) (step S111). The ground fluctuation analysis unit 14 records the base line identification information and the fluctuation identification information specified by the processing result in the analysis result table.

  The ground fluctuation result output unit 15 reads from the analysis result table recorded in the database 16 the base line identification information in which the base line fluctuation identification information is held, and the fluctuation identification information associated with the base line. The ground change result output unit 15 displays a base line network in which quadrangular or triangular closed areas connecting the points of the satellite positioning signal receiving antennas 10 arranged in the national land area are continuous over the entire territorial surface, superimposed on the national land area map. Display data is generated (step S112). The ground change result output unit 15 changes the display mode of the base line based on the base line identification information and the base line change identification information when generating the display data. For example, if the base line change identification information indicates that the base line change identification information has changed longer than the reference threshold, the base line change result output unit 15 changes the color of the base line to red. The ground change result output unit 15 changes the color of the base line to blue when the base line change identification information indicates that the base line change information has changed shorter than the reference threshold. The ground change result output unit 15 transmits the generated display data to a terminal connected via a communication network such as the Internet (step S113). The destination terminal may be a terminal held by a scholar, a weather information distribution company, a surveying company, a construction company, or a local government. The destination terminal may be a portable terminal carried by an individual. The destination terminal may be a computer server connected to the Internet that distributes SNS (Social Networking Service) information.

The ground fluctuation analysis unit 14 may specify the closed area that changes more than the reference threshold in the reference period by using the change rate of the area of the closed area.
In this case, the ground fluctuation analysis unit 14 acquires from the database 16 the 24-hour average of the geocentric orthogonal coordinates calculated most recently for each point of the satellite positioning signal receiving antenna 10 constituting one closed region. The ground fluctuation analysis unit 14 calculates the area of the closed region from the 24-hour average of the geocentric Cartesian coordinates of each point. This area is called the first area.
The ground fluctuation analysis unit 14 is calculated one day before (24 hours before) the 24-hour average of the latest geocentric orthogonal coordinates calculated for each point of the satellite positioning signal receiving antenna 10 constituting the same closed region. A 24-hour average of the geocentric Cartesian coordinates is obtained from the database 16. The ground deformation analysis unit 14 calculates the area of the closed region one day ago from the 24-hour average of the geocentric Cartesian coordinates of each point. This area is called the second area.
The ground fluctuation analysis unit 14 calculates the rate of change from the first area to the second area. The ground fluctuation analysis unit 14 determines whether the rate of change from the first area to the second area is greater than or equal to a reference threshold value. As the reference threshold value, for example, 3 per mil (‰) is assumed.

  If the rate of change from the first area to the second area is equal to or greater than the reference threshold, it indicates that the rate of change from the first area to the second area has changed by 3 ‰ or more in 24 hours. . If the rate of change from the first area to the second area is greater than or equal to the reference threshold value, the ground fluctuation analysis unit 14 specifies the closed region where the first and second areas are calculated. The specification of the closed region is an aspect of specifying a closed region that fluctuates more than a reference threshold value in the reference period. The ground fluctuation analysis unit 14 further determines whether the specified closed region has fluctuated (enlarged) or fluctuated (reduced) a little more than a reference threshold. The ground fluctuation analysis unit 14 records the identified closed area identification information and the fluctuation identification information indicating whether the closed area has been expanded or reduced by a reference threshold value or more in the database 16.

  The analysis result table held in the database 16 stores the identification information of the closed region and the fluctuation identification information about the closed region. The ground fluctuation analysis unit 14 determines whether or not the magnitude of all the closed areas has fluctuated by the reference threshold (3 ‰) or more in the reference period (24 hours). The ground fluctuation analysis unit 14 records the identification information and the fluctuation identification information of the closed region specified by the processing result in the analysis result table.

  The ground fluctuation result output unit 15 reads from the analysis result table recorded in the database 16 the closed area in which the fluctuation identification information about the closed area is held and the fluctuation identification information. The ground change result output unit 15 generates display data for displaying a base line network in which quadrangular or triangular closed regions connecting between points arranged in the national land region are connected to the entire territorial surface on the map of the national land region. The ground fluctuation result output unit 15 changes the display mode of the closed area based on the identification information of the closed area and the fluctuation identification information of the closed area when generating the display data. For example, when the change identification information of the closed region indicates that the closed region change identification information has changed by a reference threshold value or more, the ground change result output unit 15 changes the closed region by coloring it. The ground change result output unit 15 may determine whether the change is expansion or contraction based on the change identification information of the closed region, and may change the color with a different color depending on whether the change is expansion or reduction. The ground change result output unit 15 transmits the generated display data to a terminal connected via a communication network such as the Internet.

FIG. 7 is a diagram for explaining parameters used in a calculation formula for calculating the strain in the closed region.
The ground fluctuation analysis unit 14 may specify the closed region by using the strain (strain) of the closed region as one aspect of specifying the closed region that fluctuates more than the reference threshold value in the reference period.
In this case, the ground fluctuation analysis unit 14 acquires from the database 16 the 24-hour average of the geocentric orthogonal coordinates calculated most recently for each point of the satellite positioning signal receiving antenna 10 constituting one closed region. The ground fluctuation analysis unit 14 specifies a triangular area constituting a closed area from the geocentric orthogonal coordinates of each point. For example, if the closed region is a quadrangular region, two triangular regions can be specified by connecting two diagonal points.

  The ground fluctuation analysis unit 14 uses the database 16 to calculate the 24-hour average of the geocentric Cartesian coordinates calculated one day before (24 hours before) the 24-hour average of the most recently calculated geocentric Cartesian coordinates for each point of the specified triangular region. Get from. Then, the ground fluctuation analysis unit 14 uses the 24-hour average of the geocentric orthogonal coordinates calculated for each point that is the apex of the identified triangular area, and the 24-hour average of the geocentric orthogonal coordinates one day before the triangular area. (1) The amount of expansion / contraction in the x-axis direction, (2) The amount of displacement of the x-axis in the y-direction, and (3) The amount of expansion / contraction in the y-axis direction. (4) The amount of displacement of the y axis in the x direction is calculated.

Here, the amount of expansion and contraction in the x-axis direction (−ε _xx δx) is the same as that in the triangle area after 24 hours, assuming that the apex set in the specified triangle area is the origin and the north-south direction is the x-axis and the east-west direction is the y-axis. The amount of expansion / contraction in the x-axis direction of a side having a small angle with the x-axis of two sides with the vertex as a reference when the vertex is the origin is shown. δx is the original length of the side having a small angle with the x axis in the specified triangular region.
The amount of expansion and contraction in the y-axis direction (-ε _yy δy) is assumed to be the same x-axis and y-axis with the same vertex in the triangle region as the origin, and the same vertex in the triangle region after 24 hours as the origin. The amount of expansion / contraction in the y-axis direction of the side with a small angle formed with the y-axis of the two sides with the vertex as a reference is shown. δy is the original length of the side having a small angle with the y-axis in the specified triangular region.

Further, the displacement amount (− (ε _xy + ω _z ) δx) of the x axis in the y direction extends with the origin of the triangular region as one end, and the apex of the other end in the side having a small angle with the x axis is in the y axis direction. The amount of displacement is shown.
The displacement amount (− (ω _z −ε _xy ) δy) of the y axis in the x direction extends with the origin of the triangular region as one end, and the apex of the other end on the side having a small angle with the y axis is the y axis direction. The amount of displacement is shown.

  Using (1) the amount of expansion / contraction in the x-axis direction, (2) the amount of displacement of the x-axis in the y-direction, (3) the amount of expansion / contraction in the y-axis direction, and (4) the amount of displacement of the y-axis in the x-direction. The following formulas (1) and (2) represent the variation component of one side (base line) with the vertex set in the specified triangular area as an end point.

  In addition, when it is recognized from Equations (1) and (2) that the variation amount of one side (baseline) whose end point is a set vertex of a triangular area after 24 hours is determined to be sufficiently small, the one side (baseline) These displacement amount components can be expressed by Equations (3) and (4).

In the above equation, ω _z indicates rotation,

It is represented by
When representing the one side and _{L 1,} elongation of the sides _{L 1} a _(dL 1 / _{L 1),} it can be expressed by Equation (8). Similarly, the remaining two sides of the specified triangular area are referred to as L ₂ and L ₃ . Then, elongation of the side _{L 2 (dL 2 / L 2} ) and elongation _{L 3} a _(dL 3 / _{L 3),} can be expressed by Equation (9), equation (10). In each equation, θ ₁ , θ ₂ , and θ ₃ indicate angles formed by the sides L ₁ , L ₂ , and L ₃ in the triangular region before the change with the x-axis (see FIG. 7).

The ground fluctuation analysis unit 14 calculates strain components ε _xx and ε _yy by solving the equations (5), (6), and (7) with simultaneous equations. Note that each of the above formulas and strain calculation methods are known techniques, such as `` Turcotte, DL and G. Schubelt, Geodynamics-Application of Continuous Physics to Geological Problems, Second Edition CAMBRIDGE UNIVERSITY PRESS, September 2013, The method described in “p154-p167” may be used.

The ground deformation analysis unit 14 calculates a total value (dilatation (area strain)) of the strain components ε _xx and ε _yy , and when the total value is equal to or greater than the reference threshold, the ground region analysis unit 14 performs 24 hours in a closed region including the triangular region. It is determined that distortion has occurred, and the closed region is specified. The specification of the closed region is an aspect of specifying a closed region in which a strain greater than or equal to the reference threshold has occurred in the reference period. The ground fluctuation analysis unit 14 may further determine whether a strain larger than the reference threshold has occurred or a small strain has occurred in the specified closed region. The ground fluctuation analysis unit 14 records the identified closed area identification information and the fluctuation identification information indicating whether a large strain greater than or equal to a reference threshold has occurred in the closed region or a small strain has occurred in the database 16. May be.

  The analysis result table held in the database 16 stores the identification information of the closed region and the fluctuation identification information about the closed region. The ground fluctuation analysis unit 14 determines whether a strain greater than the reference threshold has occurred in the reference period for all closed regions. The ground fluctuation analysis unit 14 records the identification information and the fluctuation identification information of the closed region specified by the processing result in the analysis result table.

  The ground fluctuation result output unit 15 reads from the analysis result table recorded in the database 16 the closed area in which the fluctuation identification information about the closed area is held and the fluctuation identification information. The ground change result output unit 15 generates display data for displaying a base line network in which quadrangular or triangular closed regions connecting between points arranged in the national land region are connected to the entire territorial surface on the map of the national land region. The ground fluctuation result output unit 15 changes the display mode of the closed area based on the identification information of the closed area and the fluctuation identification information of the closed area when generating the display data. For example, when the variation identification information of the closed region indicates the occurrence of distortion greater than or equal to the reference threshold, the ground variation result output unit 15 changes the closed region with a color. The ground change result output unit 15 transmits the generated display data to a terminal connected via a communication network such as the Internet.

  In the above example, the example in which the change rate of the length of the base line, the area of the closed region, and the strain of the closed region fluctuates more than the reference threshold at the reference time has been described. The display mode of the closed region may be changed by the change. The ground analysis device 1 divides the closed area into triangular areas when the closed area is composed of a base line connecting four or more points, and the triangular area fluctuates more than the reference threshold value during the reference period. You may decide to do.

FIG. 8 is a diagram showing a baseline network.
As shown in FIG. 8, the ground analysis device 1 outputs an image in which a base line network in which a closed area of a quadrangle or a triangle connecting between points arranged in the land area is connected to the entire territorial surface is superimposed on a map of the land area. be able to. The ground analysis device 1 transmits display data indicating an image obtained by changing the display mode of the identified baseline in the image shown in FIG.

FIG. 9 is a first diagram showing an example of display data.
In FIG. 9, A1, A2, A3, A4, A5, B1, and B2 indicate baselines whose lengths fluctuated by the reference threshold (3 cm) or more in the reference period (24 hours). Base lines A1, A2, A3, A4, and A5 indicate base lines whose length is extended by a reference threshold (3 cm) or more in a reference period (24 hours). Base lines B1 and B2 indicate base lines whose length contracted by a reference threshold (3 cm) or more in the reference period (24 hours). Closed regions S1 and S2 indicate closed regions whose areas have changed by a reference threshold value or more during the reference period. Note that the display mode of the closed region and the baseline may be any. For example, a mark or a number may be displayed on the closed area that has changed so that the determiner can determine the closed area that has changed. You may make it display closed area | region S1, S2 as a closed area | region where distortion is more than a threshold value.

FIG. 10 is a second diagram illustrating an example of display data.
As in the display data shown in FIG. 10, the ground analysis device 1 identifies and displays the base line of the square diagonal line (A6, B3) indicated by the closed region more than the reference threshold during the reference period. You may make it display in data.

  According to the processing of the ground analysis device 1 described above, the coordinate measurement device 2 receives satellite positioning signals from many satellite positioning signal receiving antennas 10 fixedly installed throughout Japan through the communication network, and based on the data. Thus, the coordinate measuring device 2 and the ground analysis device 1 can immediately calculate the 24-hour average geocentric orthogonal coordinates of the specific satellite positioning signal receiving antenna 10. Based on the geocentric Cartesian coordinates calculated in this way, a closed region that has changed by a reference threshold value or more during the reference period can be output to a terminal or the like connected via a communication network. Thereby, it is possible to notify the observer so that the specific position of the land area having a large ground fluctuation can be clearly and quickly understood, and it is possible to urgently determine a location where a large disaster or the like occurs. Thereby, the information of the fluctuation of the ground having high utility can be quickly transmitted.

  The ground analysis device 1 specifies a new closed area based on three or more arbitrarily given coordinates in the land area, determines whether the closed area has changed by a reference threshold or more during the reference period, and then determines the closed area. Display data as described above may be generated. In this case, the ground analysis device 1 uses the three-dimensional coordinate fluctuation given arbitrarily, the 24-hour average geocentric orthogonal coordinates of several satellite positioning signal receiving antennas 10 around it, and the movement of those points. Calculate using the speed and the four-dimensional integrated network average formula.

  By the processing of the ground fluctuation analysis unit 14, the 24-hour average of the geocentric orthogonal coordinates, the 24-hour average of the ellipsoidal height, the 24-hour average of the horizontal movement amount, and the ground height fluctuation amount for each satellite positioning signal receiving antenna 10. After the 24-hour average calculation results are accumulated in the calculation result table, for example, the ground fluctuation result output unit 15 performs the 24-hour average of the geocentric orthogonal coordinates, the 24-hour average of the ellipsoidal height, and the horizontal movement amount of 24 hours. The average and the ground height fluctuation amount of the 24-hour average, the result at every predetermined interval (every 3 hours in the present embodiment) may be transmitted to another terminal, output to a monitor, or printed.

FIG. 11 is a diagram showing an output example of the ground deformation analysis result of the ellipsoidal height.
As shown in this figure, the ground fluctuation result output unit 15 calculates the ellipsoidal height of the satellite positioning signal receiving antenna 10 (ID = 00001) averaged for 24 hours calculated by the above-described processing at predetermined intervals, and outputs them. The output result shown in the graph may be output to a monitor or the like. By displaying the ground deformation such as the ellipsoidal height averaged over 24 hours as shown in FIG. 11, even when the periodic change of the ground deformation does not fit after an earthquake etc., an accurate ground deformation amount is output. And can be used for determining whether or not a disaster occurs depending on the magnitude of the fluctuation amount at the predetermined interval.

  Similarly, based on the detection input of the ground fluctuation output instruction or the start time of the ground fluctuation output process by the program, the ground fluctuation result output unit 15 averages the 24-hour average of the specific satellite positioning signal receiving antenna 10. Output results such as the geocentric orthogonal coordinates, the horizontal movement amount, and the ground height fluctuation amount may be output.

According to the above processing, the coordinate measuring device 2 receives satellite positioning signals from many satellite positioning signal receiving antennas 10 that are fixedly installed throughout Japan through the communication network, and specifies the data based on the data. The coordinate measurement device 2 and the ground analysis device 1 can immediately confirm ground fluctuations such as 24-hour average geocentric orthogonal coordinates, ellipsoidal height, horizontal movement amount, ground height fluctuation amount of the satellite positioning signal receiving antenna 10 of the satellite positioning signal receiving antenna 10. it can. This makes it possible to urgently determine a location where a large disaster occurs at the time desired by the observer.
In addition, since each coordinate measuring device 2 calculates the 24-hour average of the geocentric orthogonal coordinates and the ellipsoidal height at different reference times, the processing load is dispersed and the 24-hour average calculation process that takes 1 hour or more is performed for 24 hours. It can be received by the ground analysis device 1 every shorter predetermined time (every 3 hours in the present embodiment), and the ground fluctuation in the area requiring urgency can be analyzed.

  In the above-described processing, the case where the ground analysis device 1 directly receives the satellite positioning signal from the coordinate measuring device 2 has been described. However, the satellite positioning signal is received via some kind of satellite positioning signal storage server. You may make it do.

  The above-described ground analysis device 1 has a computer system inside. Each process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing the program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Ground analysis device 2 ... Coordinate measuring device 10 ... Satellite positioning signal receiving antenna 20 ... Satellite positioning signal receiving device 11, 21 ... Communication processing part 12, 22 ... Control part 13・ ・ ・ Antenna position calculation result receiver 14 ・ ・ ・ Ground fluctuation analysis part 15 ・ ・ ・ Ground fluctuation result output part 16, 26 ・ ・ ・ Database 23 ・ ・ ・ Satellite positioning signal receiver 24 ・ ・ ・ Antenna position calculator 25 ... Antenna position calculation result output unit

The present invention relates to a ground information system, a ground analysis device, a ground information processing method, and a program.

Accordingly, an object of the present invention is to provide a ground information system, a ground analysis device, a ground information processing method, and a program that solve the above-described problems.

According to the first aspect of the present invention, the ground information system receives a satellite positioning signal received from a position observation satellite by each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area. a satellite positioning signal receiving means for, the reference time in the fixed installation position of each of the satellite positioning signal receiving antenna based on said satellite positioning signal with the reference time used to calculate the average predetermined time the predetermined time period A rectangular closed region composed of an antenna position calculation unit that calculates the average coordinates for a predetermined time for each predetermined time, a base line side connecting four points determined to be adjacent to each other, and the reference point in baseline network continuous in the closed region and the region surface of the triangle formed by sides of the base line connecting the 3 points that are determined to be adjacent one point respectively, A specifying unit for specifying the closed region in which the predetermined time average of the coordinates calculated for each of the predetermined time before and after to continue varies more reference threshold, and change the display state closed regions identified as other closed regions An analysis result output unit that transmits a ground analysis result including display information obtained by superimposing the base line network on the national land area to a terminal connected via a communication network at predetermined intervals .

Geotechnical systems above mentioned identifies the closed area of the quadrangle, the baseline network to identify the closed area of a triangle connecting the point for the point can not be determined closed area of the rectangle superimposed on the map A display information generating unit that generates the display information to be displayed, and the specifying unit includes, for a closed region of the quadrangle that forms the base line network, a line connecting two diagonal points that form the quadrangle Is calculated on the basis of the coordinates of the predetermined time average calculated for each of the predetermined times before and after the continuous, and for the closed region of the triangle, the distortion for the triangular region is calculated. Calculated based on the coordinates of the predetermined time average calculated for each of the predetermined time before and after the continuous, and distortion based on the value of the distortion and a reference threshold The analysis result output unit changes the display state of the specified closed area with another closed area and displays the ground analysis result including the display information obtained by overlaying the base line network on the national land area. It may be output .

Further, in the above ground information system, the specifying unit may calculate the predetermined time average calculated for each of the predetermined times before and after the satellite positioning signal receiving antennas respectively located at the end points of the base line in the base line network. The base line whose base line length has changed by a reference threshold or more due to a change in the coordinates of the base line is specified in a closed region including the base line, and the analysis result output unit displays the specified base line in a display state with other base lines. A ground analysis result including the display information obtained by changing and overlaying the base line network on the national land area may be output .

Further, in the above ground information system, the specifying unit specifies a diagonal base line indicating two diagonal lines of the quadrangle, and the satellite positioning signal receiving antennas before and after the continuous positioning signals respectively positioned at end points of the base line A base line in which the length of the base line has changed by a reference threshold or more due to a change in the average coordinates calculated for each predetermined time may be specified in a closed region including the base line.

Further, in the above ground information system , the specifying unit calculates the average of the predetermined times calculated for each of the predetermined times before and after the continuous in each of the closed regions of the quadrangle and the triangle constituting the baseline network. A closed region that generates an area variation equal to or greater than a reference threshold based on the change in coordinates is identified, and the analysis result output unit changes the display state of the identified closed region to another closed region and changes the display state to the national land region. A ground analysis result including the display information on which a base line network is superimposed may be output .

  According to the second aspect of the present invention, the ground analysis device receives the satellite positioning signals received from the position observation satellites by the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area. Satellite positioning signal receiving means, a reference time used for calculating a predetermined time average, and the satellite positioning signal for the predetermined time based on the reference time at the fixed position of each of the satellite positioning signal receiving antennas. Antenna position calculation for receiving the coordinates of the predetermined time average of each of the satellite positioning signal receiving antennas from a coordinate measuring device comprising: an antenna position calculation unit that calculates the average coordinates of the predetermined time for each predetermined time A square closed region composed of a side of each base line connecting the result receiving unit and four points determined to be adjacent to each of the points, and the ground The average of the predetermined times calculated for each of the predetermined times before and after in a baseline network in which a triangle closed region composed of sides of each baseline connecting three points determined to be adjacent to each other is connected on the region plane. A specifying unit that specifies the closed region in which the coordinates of the reference point fluctuate by more than a reference threshold, and a ground including display information in which the specified closed region is changed from another closed region to a display state and the base line network is overlaid on the national land region An analysis result output unit that transmits the analysis result to a terminal connected via a communication network at predetermined intervals.
  The ground analysis device described above identifies the closed region of the quadrangle, and for the points where the closed region of the quadrangle cannot be identified, identifies the closed region of the triangle connecting the points and displays the base line network on the map. A display information generation unit that generates the display information, and for the closed region of the quadrangle that configures the baseline network, the specifying unit defines the quadrangle by a line connecting two diagonal points that configure the quadrangle. The distortion for the divided two triangular areas is calculated based on the coordinates of the predetermined time average calculated for each of the predetermined times before and after the continuous, and for the closed area of the triangle, the distortion for the triangular area is calculated. Calculate based on the average coordinates of the predetermined time calculated for each of the predetermined time before and after the continuous, and generate distortion based on the distortion value and the reference threshold The analysis result output unit outputs a ground analysis result including the display information obtained by superimposing the base line network on the national land area by changing the display state of the specified closed area with another closed area. May be.

According to the third aspect of the present invention, in the ground information processing method, the satellite positioning signals received from the position observation satellites by the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area are obtained. a satellite positioning signal receiving means for receiving said reference time in said satellite positioning signal receiving antenna each of the fixedly installed position based on said satellite positioning signal with the reference time of the predetermined time used to calculate the average predetermined time calculating a predetermined time average of coordinates relative to each of the predetermined time and an antenna position calculation unit, from the coordinate measurement device having a to receive the predetermined time average of the coordinates of each of the satellite positioning signal receiving antenna, the When the adjacent one of the points respectively closed area of the rectangle formed by the sides of the base line connecting the four points which are determined that adjacent ones of the point, respectively In the baseline network and closed area of a triangle formed by sides of the base line connecting the three points to be constant is contiguous with the area surface, the predetermined time average of the coordinates of the reference threshold value calculated for each of the before and after successive predetermined time identify the closed area varying over the soil analysis results including the display information overlaid the baseline network a closed area specified by changing the display state and the other closed regions in the national land area, the communication network system It transmits at predetermined intervals to the terminals connected through the network.

According to the fourth aspect of the present invention, the program receives the computer of the ground analysis device from each of the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area from the position observation satellite. Satellite positioning signal receiving means for receiving a satellite positioning signal, a fixed time of each of the satellite positioning signal receiving antennas based on a reference time used for calculating a predetermined time average and the satellite positioning signal for the predetermined time And an antenna position calculating unit that calculates a predetermined time average coordinate with respect to the reference time at each predetermined time, from the coordinate measuring device, the coordinate of the predetermined time average of each of the satellite positioning signal receiving antennas receive antenna position calculation result receiving unit, configured by the base line of the side connecting the four points which are determined that adjacent ones of said points, respectively In baseline network closed area of a triangle formed by sides of the base line connecting the 3 points that are determined to be adjacent one of each of the the closed area of the square points are continuous on the region surface which, for each of the before and after successive predetermined time specifying means for specifying the closed region calculated the predetermined time average of the coordinates varies more reference threshold, the closed area specified by changing the display state and the other closed regions overlapping the baseline network to the national land area It is made to function as an analysis result output means for transmitting the ground analysis result including the displayed information to the terminals connected via the communication network at predetermined intervals .

According to the first aspect of the present invention, the ground information system receives a satellite positioning signal received from a position observation satellite by each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area. Satellite positioning signal receiving means, a reference time used for calculating a predetermined time average, and the satellite positioning signal for the predetermined time based on the reference time at the fixed position of each of the satellite positioning signal receiving antennas. A rectangular closed region composed of an antenna position calculation unit that calculates the average coordinates for a predetermined time as a reference every predetermined time, and sides of each base line connecting four points determined to be adjacent among the points is specified. is, for the point can not be determined closed area of the rectangle the sides of the base line connecting the 3 points that are determined to adjacent ones of each said point Closed area of the triangle is identified consists in baseline network closed region of the closed region and a triangle of the square and is contiguous with the area surface, the predetermined time average of coordinates calculated for each of before and after successive predetermined time A ground analysis result that includes a specifying unit that identifies the closed region in which the threshold value fluctuates by more than a reference threshold, and display information in which the identified closed region is changed from another closed region to a display state and the base line network is overlaid on the national land region And an analysis result output unit that transmits the data to a terminal connected via a communication network at predetermined intervals.

According to the second aspect of the present invention, the ground analysis device receives the satellite positioning signals received from the position observation satellites by the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area. Satellite positioning signal receiving means, a reference time used for calculating a predetermined time average, and the satellite positioning signal for the predetermined time based on the reference time at the fixed position of each of the satellite positioning signal receiving antennas. Antenna position calculation for receiving the coordinates of the predetermined time average of each of the satellite positioning signal receiving antennas from a coordinate measuring device comprising: an antenna position calculation unit that calculates the average coordinates of the predetermined time for each predetermined time a result receiving unit, of certain closed region rectangle constituted by the base line of the side connecting the four points which are determined that adjacent ones of said points, respectively For the point can not be determined closed area of the square closed area of a triangle formed by sides of the base line connecting the 3 points that are determined to adjacent ones of each said point is identified, the closed area of the quadrangle A specifying unit that specifies the closed region in which the coordinate of the predetermined time average calculated for each of the predetermined times before and after the continuous fluctuates more than a reference threshold in a baseline network in which a triangular closed region is continuous on a region surface; The ground analysis result including the display information obtained by changing the display state of the closed area from the other closed areas and overlaying the base line network on the national land area is transmitted to the terminals connected via the communication network at predetermined intervals. And an analysis result output unit that transmits the data.
The ground analysis device described above identifies the closed region of the quadrangle, and for the points where the closed region of the quadrangle cannot be identified, identifies the closed region of the triangle connecting the points and displays the base line network on the map. A display information generation unit that generates the display information, and for the closed region of the quadrangle that configures the baseline network, the specifying unit defines the quadrangle by a line connecting two diagonal points that configure the quadrangle. The distortion for the divided two triangular areas is calculated based on the coordinates of the predetermined time average calculated for each of the predetermined times before and after the continuous, and for the closed area of the triangle, the distortion for the triangular area is calculated. Calculate based on the average coordinates of the predetermined time calculated for each of the predetermined time before and after the continuous, and generate distortion based on the distortion value and the reference threshold The analysis result output unit outputs a ground analysis result including the display information obtained by superimposing the base line network on the national land area by changing the display state of the specified closed area with another closed area. May be.

According to the third aspect of the present invention, in the ground information processing method, the satellite positioning signals received from the position observation satellites by the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area are obtained. The satellite positioning signal receiving means for receiving, the reference time used for calculating a predetermined time average, and the reference time at the fixed position of each of the satellite positioning signal receiving antennas based on the satellite positioning signal for the predetermined time Receiving the coordinates of the predetermined time average of each of the satellite positioning signal receiving antennas from a coordinate measuring device including an antenna position calculating unit that calculates the coordinates of the predetermined time average with respect to the predetermined time, closed area of the rectangle formed by the sides of the base line connecting the four points which are determined that adjacent ones of points, each identified, JP closed areas of the quadrangle Closed area of a triangle formed by sides of the base line for the point can not connect 3 point is determined to adjacent ones of each said point is identified, the closed region and the region surface of the closed region and a triangle of the quadrangle In the baseline network, the closed region in which the average coordinate of the predetermined time calculated for each of the predetermined times before and after the continuous fluctuates more than a reference threshold is specified, and the specified closed region is displayed as another closed region. The ground analysis result including the display information obtained by superimposing the base line network on the land area is transmitted at predetermined intervals to the terminals connected via the communication network.

According to the fourth aspect of the present invention, the program receives the computer of the ground analysis device from each of the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area from the position observation satellite. Satellite positioning signal receiving means for receiving a satellite positioning signal, a fixed time of each of the satellite positioning signal receiving antennas based on a reference time used for calculating a predetermined time average and the satellite positioning signal for the predetermined time And an antenna position calculating unit that calculates a predetermined time average coordinate with respect to the reference time at each predetermined time, from the coordinate measuring device, the coordinate of the predetermined time average of each of the satellite positioning signal receiving antennas Receiving antenna position calculation result receiving means, constituted by sides of each base line connecting four points determined to be adjacent to each of the points The closed area of the rectangle are identified, the closed region of a triangle formed by sides of the base line connecting the 3 points that are determined to adjacent ones of each said point for the point can not be determined closed area of the square is identified Further, in the baseline network in which the closed region of the rectangle and the closed region of the triangle are continuous on the region surface, the closed region where the coordinates of the predetermined time average calculated for each of the predetermined times before and after the variation fluctuate more than a reference threshold value. A specifying means for specifying, and the ground analysis result including display information obtained by overlaying the base line network on the national land area by changing the display state of the specified closed area with another closed area is connected via a communication network It is made to function as an analysis result output means for transmitting to the terminal at predetermined intervals.

Claims (8)

Satellite positioning signal receiving means for receiving a satellite positioning signal received from a position observation satellite by each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area;
An antenna position calculator for calculating coordinates of the satellite positioning signal receiving antenna based on the satellite positioning signal;
A specification for identifying the closed region in which a closed region composed of sides of each base line connecting three or more points determined to be adjacent to each other in the respective points fluctuates by a reference period or more in a reference period in a base line network connected on the region surface And
An analysis result output unit that outputs a ground analysis result including display information obtained by overlaying the base line network on the national land region by changing the display state of the identified closed region with another closed region;
A ground information system characterized by comprising: The specifying unit specifies, in a closed region including the base line, a base line in which each coordinate of the satellite positioning signal receiving antenna, which is located at each end point of the base line, has changed by a reference threshold or more in a reference period in the base line network,
2. The analysis result output unit outputs a ground analysis result including display information obtained by changing the display state of the identified base line from another base line and overlaying the base line network on the land area. The ground information system described in 1. The specifying unit specifies a closed region that generates a distortion greater than a reference threshold value in a reference period among the closed regions constituting the baseline network,
The analysis result output unit outputs a ground analysis result including display information obtained by superposing the base line network on the national land area by changing the display state of the identified closed area from another closed area. The ground information system according to claim 1 or 2. The specifying unit specifies a closed region that generates an area variation equal to or greater than a reference threshold value in a reference period among the closed regions constituting the baseline network,
The analysis result output unit outputs a ground analysis result including display information obtained by superposing the base line network on the national land area by changing the display state of the identified closed area from another closed area. The ground information system according to any one of claims 1 to 3. When the closed region is a closed region constituted by a base line connecting four or more points, the closed region is divided into triangular regions, and it is determined whether the triangular region fluctuates more than a reference threshold during a reference period,
The ground information system according to any one of claims 1 to 4, wherein the specifying unit specifies a closed region including a triangular region that fluctuates more than a reference threshold during a reference period. A reference time receiving means for receiving a reference time used for calculating the 24-hour average;
Based on the satellite positioning signal for 24 hours and the reference time, the geocentric orthogonal coordinate calculation means for calculating the 24-hour average geocentric orthogonal coordinates at the fixed position of each of the satellite positioning signal receiving antennas. When,
The ground information system according to any one of claims 1 to 4, further comprising: Each of the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the land area receives the satellite positioning signals received from the position observation satellites,
Calculate coordinates of the satellite positioning signal receiving antenna based on the satellite positioning signal,
Identifying the closed region in which a closed region constituted by sides of each base line connecting each of three or more points determined to be adjacent among the points varies in a reference period in a base line network connected on the region surface, more than a reference threshold value,
A closed region in which a closed region composed of a base line connecting three or more points determined to be adjacent to each other as one side among the points is connected in the region surface is a closed region in which the closed region fluctuates more than a reference threshold during a reference period. Identify,
A ground information processing method for outputting a ground analysis result including display information obtained by changing the display state of the identified closed region from another closed region and overlaying the base line network on the national land region. Computers that make up the ground information system
Based on the coordinates of the satellite positioning signal receiving antennas calculated based on the satellite positioning signals received from the satellites for position observation each of the plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points in the national land area, A specification for identifying the closed region in which a closed region composed of sides of each base line connecting three or more points determined to be adjacent to each other in the respective points fluctuates by a reference period or more in a reference period in a base line network connected on the region surface means,
An analysis result output means for outputting a ground analysis result including display information obtained by superposing the base line network on the national land region by changing the display state of the identified closed region with another closed region;
Program to function as.

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