JP2010139335A - Disaster urgent ground fluctuations analysis system and disaster urgent ground fluctuations analysis method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disaster urgent ground fluctuations analysis system which can urgently determine the location at which a large disaster is estimated to occur, at the time desired by an observer. <P>SOLUTION: Each of coordinates measuring apparatuses which are connected to each other through a communications network and are fixedly installed in different points receives a satellite positioning signal from a position observation satellite, and satellite positioning signals acquired by each coordinates measuring apparatus for 24 hours at predetermined time intervals are received via communications network located at predetermined intervals. On the basis of the received 24-hour satellite positioning signals, the 24-hour average geocentric Cartesian coordinates of each coordinate-measuring apparatus is calculated, and a geocentric coordinates fluctuations result in which the calculation result of the 24-hour average geocentric Cartesian coordinates is displayed is output at predetermined intervals. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disaster emergency ground fluctuation analysis system and a disaster emergency ground fluctuation analysis method capable of analyzing an emergency ground fluctuation at the time of a disaster.

  Conventionally, in order to obtain the daily coordinate values of the GPS geodetic reference points of over 1,200 points covering the whole country, it is necessary to make the computer that calculates the coordinate values to perform enormous processing, so the current time It took about 2 to 3 weeks, and it was difficult to obtain information on ground deformation at the private level from the viewpoint of disaster prevention and mitigation. Unlike earthquake observation networks, it was impossible to urgently and widely use observation results by building a GPS local network including public institutions, universities, and the private sector. Such difficulty in acquiring coordinate information across the country has made it difficult to perform continuous precise analysis of GPS due to differences in the types of GPS receivers. In addition, in these analyses, it takes a long time and a large amount of money to ensure the accuracy. Here, Patent Document 1 discloses a technique for periodically observing the coordinates of a plurality of observation reference points and estimating a disaster occurrence point based on the amount of change in the coordinates of each observation reference point.

Japanese Patent No. 4139229

  Here, although the technique of the above-mentioned patent document 1 makes it a subject to be able to grasp | ascertain an abnormal ground correctly and to predict a ground disaster exactly, it is normal, and the daily coordinate value in the Geographical Survey Institute GPS electronic reference point is normal. As described above, it takes 2 to 3 weeks to obtain the information, so it is not possible to grasp immediately what kind of abnormality is occurring at any point in the country, and it is urgent. It could not be used to detect disaster locations. For example, immediately after an earthquake occurs, the disaster does not continue, but the ground starts to slip immediately after the earthquake, and a disaster such as a landslide may occur several hours later. It was difficult to do.

  Therefore, an object of the present invention is to provide a disaster emergency ground fluctuation analysis system and a disaster emergency ground fluctuation analysis method capable of urgently determining a location where a large disaster occurs at an arbitrary time desired by an observer. .

  In order to achieve the above object, the present invention provides a disaster emergency ground fluctuation analysis system in which a plurality of coordinate measurement devices and a disaster emergency ground fluctuation analysis device are connected via a communication network, the plurality of coordinate measurement devices A satellite positioning signal that receives a satellite positioning signal received from a position observation satellite by each of a plurality of satellite positioning signal receiving antennas connected to the communication network and fixedly installed at a plurality of different points via the communication network. Receiving means; reference time receiving means for receiving a reference time used for calculating an average of 24 hours related to a calculation target from the disaster emergency ground fluctuation analysis apparatus; the received satellite positioning signals for the received 24 hours; and the reference time; Based on the 24-hour average geocentric orthogonality at the fixed position of each of the satellite positioning signal receiving antennas A geocentric Cartesian coordinate calculation means for calculating a target, and the disaster emergency ground fluctuation analysis device sets a reference time used for calculating a 24-hour average related to the calculation target to each of the plurality of coordinate measurement devices. A reference time notifying means for notifying at different intervals, and receiving the geocentric orthogonal coordinates of each of the plurality of satellite positioning signal receiving antennas averaged over 24 hours from the different coordinate measuring devices for each predetermined interval, A geocentric orthogonal coordinate variation result output means for outputting a geocentric orthogonal coordinate variation result indicating a 24-hour average geocentric orthogonal coordinate at each of the predetermined intervals at each fixed position of each positioning signal receiving antenna; This is a disaster emergency ground deformation analysis system.

  Further, the present invention provides the above-described disaster emergency ground fluctuation analysis system, wherein each of the coordinate measuring devices is configured to perform the satellite positioning based on the calculated geocentric orthogonal coordinates and the reference time of each of the satellite positioning signal receiving antennas. Ellipsoidal height calculating means for calculating the average ellipsoidal height for each of the predetermined intervals at the predetermined positions of the signal receiving antennas, and the disaster emergency ground fluctuation analysis device includes the satellite positioning signal. The ellipsoidal height fluctuation result output means for outputting an ellipsoidal height fluctuation result indicating the ellipsoidal height averaged over the 24-hour period for each predetermined interval at the fixedly installed position of each receiving antenna. 1 is a disaster emergency ground deformation analysis system according to 1.

  According to the present invention, in the disaster emergency ground fluctuation analysis system described above, the disaster emergency ground fluctuation analysis apparatus is configured to calculate the 24-hour average geocentric orthogonal coordinates for each of the predetermined intervals of the calculated satellite positioning signal receiving antennas. The horizontal movement amount calculating means for calculating the horizontal movement amount of the 24-hour average at the predetermined intervals corresponding to the geocentric orthogonal coordinates, and the satellite positioning signal receiving antennas are fixedly installed. Horizontal movement amount fluctuation result output means for outputting a horizontal movement amount fluctuation result displaying a calculation result of the horizontal movement amount of the 24-hour average at each predetermined interval at a position.

  Further, the present invention provides the disaster emergency ground fluctuation analysis system, wherein the disaster emergency ground fluctuation analysis apparatus is configured to calculate the average of the 24-hour intervals at the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. A ground height fluctuation amount calculating means for calculating an average ground height fluctuation amount for each of the predetermined intervals at the fixed position of each of the satellite positioning signal receiving antennas based on an ellipsoidal height; and the satellite positioning Ground height fluctuation amount fluctuation result output means for outputting a ground height fluctuation amount fluctuation result displaying a calculation result of the 24-hour average ground height fluctuation amount at each predetermined interval at each fixed position of each signal receiving antenna. And.

  The present invention also relates to a disaster emergency ground fluctuation analysis method in a disaster emergency ground fluctuation analysis system in which a plurality of coordinate measuring apparatuses and a disaster emergency ground fluctuation analysis apparatus are connected via a communication network, the plurality of coordinate measuring apparatuses Each satellite positioning signal receiving means is connected to the communication network, and each of a plurality of satellite positioning signal receiving antennas fixedly installed at a plurality of different points receives a satellite positioning signal received from a position observation satellite via the communication network. The reference time receiving means of each of the plurality of coordinate measuring devices receives a reference time used for calculating a 24-hour average related to a calculation target from the disaster emergency ground fluctuation analysis device, and each of the plurality of coordinate measuring devices Based on the received satellite positioning signals for 24 hours and the reference time. The 24-hour average geocentric orthogonal coordinates at each of the fixed positions of the satellite positioning signal receiving antennas are calculated, and a reference time notification means of the disaster emergency ground fluctuation analysis device is provided for each of the plurality of coordinate measurement devices. The reference time used for the calculation of the 24-hour average relating to the calculation object is notified by shifting by a predetermined interval, and the geocentric orthogonal coordinate variation result output means of the disaster emergency ground variation analyzer is different for each predetermined interval. The geocentric orthogonal coordinates of each of the plurality of satellite positioning signal receiving antennas averaged over 24 hours are received from the coordinate measuring device, and the satellite positioning signal receiving antennas at each of the predetermined intervals at the fixed positions are received. It is a disaster emergency ground fluctuation analysis method characterized by outputting a geocentric orthogonal coordinate fluctuation result indicating a 24-hour average geocentric Cartesian coordinate.

  According to the present invention, in the above-described disaster emergency ground fluctuation analysis method, each ellipsoidal height calculating means of the coordinate measuring device is based on the calculated geocentric orthogonal coordinates and the reference time of each of the satellite positioning signal receiving antennas. Calculating the 24-hour average ellipsoidal height for each of the predetermined intervals at each of the fixed positions of the satellite positioning signal receiving antennas, and the ellipsoidal height fluctuation result output means of the disaster emergency ground fluctuation analysis device, An ellipsoidal height fluctuation result indicating the average ellipsoidal height for 24 hours at each predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas is output.

  According to the present invention, in the above-described disaster emergency ground fluctuation analysis method, the horizontal movement amount calculation means of the disaster emergency ground fluctuation analysis apparatus performs the 24 hours for each of the predetermined intervals of the calculated satellite positioning signal receiving antenna. Based on the average geocentric Cartesian coordinates, the horizontal movement amount of the 24-hour average for each of the predetermined intervals corresponding to each geocentric Cartesian coordinate is calculated, and the horizontal movement amount fluctuation result of the disaster emergency ground fluctuation analysis device The output means outputs a horizontal movement amount fluctuation result displaying a calculation result of the 24-hour average horizontal movement amount at each predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas. And

  Further, the present invention provides the above-mentioned disaster emergency ground fluctuation analysis method, wherein the ground height fluctuation amount calculation means of the disaster emergency ground fluctuation analysis apparatus is configured to have the predetermined interval at each of the fixed positions of the satellite positioning signal receiving antennas. Based on the 24-hour average ellipsoidal height for each, the 24-hour average ground height fluctuation amount for each predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas is calculated, and the disaster emergency The ground height fluctuation amount fluctuation result output means of the ground fluctuation analysis device displays the calculation result of the 24-hour average ground height fluctuation amount at the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. The ground height fluctuation amount fluctuation result is output.

  According to the present invention, the coordinate measuring device 2 receives satellite positioning signals from many satellite positioning signal receiving antennas 10 fixedly installed throughout Japan through a communication network, and based on the data, a specific satellite positioning signal is received. The coordinate measuring device 2 and the emergency disaster ground deformation analysis device 1 may immediately confirm ground fluctuations such as the 24-hour average geocentric orthogonal coordinates, ellipsoidal height, horizontal movement amount, ground height fluctuation amount of the 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.

Hereinafter, a disaster emergency ground fluctuation analysis apparatus 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 disaster emergency ground fluctuation analysis system according to the embodiment. In this figure, reference numeral 1 denotes a disaster emergency ground fluctuation 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 disaster emergency ground fluctuation analysis system, the satellite positioning signal receiving antennas 10 are dispersed and fixedly installed at a large number of points, for example, about 1200 points throughout Japan, and the satellite positioning signal receiving antennas are received from GPS satellites. The satellite positioning signal receiving device 20 receives the 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 disaster emergency ground fluctuation analyzing device 1 through 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 and the disaster emergency ground fluctuation analysis device 1 calculate the ground fluctuation such as the amount and the average amount of ground height fluctuation for 24 hours.

FIG. 2 is a functional block diagram of the coordinate measurement device and the disaster emergency ground fluctuation analysis device.
As shown in this figure, the disaster emergency ground fluctuation 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, a ground fluctuation result output unit 15, a database 16, and a reference. At least a time notification unit 17 is provided. Here, 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 disaster emergency ground fluctuation analysis apparatus 1. The antenna position calculation result receiving unit 13 is a processing unit that receives information on the antenna position calculation result from the coordinate measuring device 2. Further, the ground fluctuation analysis unit 14 is based on the information of the antenna position calculation result received from the coordinate measuring device 2 and the geodetic coordinates with the earth center of gravity corresponding to the position where the satellite positioning signal receiving antenna 10 is fixedly installed as the origin. Is a processing unit that 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 antenna position calculation result 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 that notifies the coordinate measuring device 2 of a reference time for the coordinate measuring device 2 to calculate the 24-hour average information of the ground fluctuation at the position where each satellite positioning signal receiving antenna 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. . Here, the communication processing unit 21 is a processing unit that communicates with the satellite positioning signal receiving device 20 and the disaster emergency ground fluctuation analysis device 1. The control unit 22 is a processing unit that controls each processing unit of the coordinate measuring apparatus 2. Further, the satellite positioning signal receiving unit 23 receives the satellite positioning signals received from the GPS satellites by the satellite positioning signal receiving antenna 10 via the satellite positioning signal receiving device 20 obtained collectively from the satellite positioning signal receiving antenna 10. Part. 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 the information calculated by the antenna position calculation unit 24 to the disaster emergency ground fluctuation analysis apparatus 1. Further, the database 16 associates data such as satellite positioning signal data 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. It is a memory | storage part to memorize | store.

  In the disaster emergency ground fluctuation analysis system according to the present embodiment, the plurality of coordinate measurement devices 2 and the disaster emergency ground fluctuation analysis device 1 are connected via a communication network, and each of the plurality of coordinate measurement devices 2 is A plurality of satellite positioning signal receiving antennas 10 connected to the communication network and fixedly installed at different points receive satellite positioning signals received from the position observation satellites (GPS satellites) via the communication network, The reference time used for calculating the 24-hour average related to the calculation target is received from the emergency ground fluctuation analysis apparatus 1, and each satellite positioning signal receiving antenna 10 is fixed based on the received satellite positioning signals for 24 hours and the reference time. The 24-hour average geocentric Cartesian coordinates at the installed position are calculated. Then, the disaster emergency ground fluctuation 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 target with a predetermined interval shifted, and a different coordinate for each predetermined interval. The geocentric orthogonal coordinates of each of the plurality of satellite positioning signal receiving antennas 10 averaged for 24 hours are received from the measuring device 2, and the 24-hour average for each predetermined interval at the fixedly installed position of each satellite positioning signal receiving antenna 10. The process of outputting the geocentric orthogonal coordinate variation result indicating the geocentric orthogonal coordinates of the center is performed.

  Further, in the disaster emergency ground fluctuation analysis system according to the present embodiment, each of the coordinate measurement devices 2 is configured so that each of the satellite positioning signal receiving antennas 10 is based on the calculated geocentric coordinates of each of the satellite positioning signal receiving antennas 10 and the reference time. The average ellipsoidal height for 24 hours at predetermined intervals at the fixedly installed position is calculated. Then, the disaster emergency ground fluctuation analysis apparatus 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.

  In the disaster emergency ground fluctuation analysis system according to the present embodiment, the disaster emergency ground fluctuation analysis apparatus 1 is based on the calculated 24-hour average geocentric orthogonal coordinates for each predetermined interval of the satellite positioning signal receiving antenna 10. A 24-hour average horizontal movement amount at a predetermined interval corresponding to each geocentric orthogonal coordinate is calculated. Then, the disaster emergency ground fluctuation analysis apparatus 1 displays the horizontal movement amount fluctuation result indicating the calculation result of the horizontal movement amount of the 24-hour average for each predetermined interval at the position where each of the satellite positioning signal receiving antennas 10 is fixedly installed. Process to output.

In the disaster emergency ground fluctuation analysis system according to the present embodiment, the disaster emergency ground fluctuation analysis apparatus 1 is based on the average ellipsoidal height for 24 hours at predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas 10. Then, 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, and every predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas 10 is calculated. The process of outputting the ground height fluctuation amount fluctuation result displaying the calculation result of the average ground height fluctuation amount of 24 hours is performed.
And the disaster emergency ground fluctuation | variation 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 disaster emergency ground fluctuation 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 disaster emergency ground fluctuation analysis apparatus will be described with reference to FIGS.
First, the satellite positioning signal receiving device 20 specifies the satellite positioning signal (the geocentric orthogonal coordinates) received from the GPS satellite by the satellite positioning signal receiving antenna 10 from the satellite positioning signal receiving antenna 10 throughout Japan via the communication network. Signal) is received 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).

  Next, the antenna position calculation unit 24 of the coordinate measuring apparatus 2 uses the satellite positioning signals for 24 hours at 30-second intervals received by the satellite positioning signal receiving antennas 10 at a plurality of points among the received satellite positioning signals. Network average calculation using a triangular network is performed (step S102). Here, 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 network average calculation is a calculation method for determining position data 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). Similarly, the antenna position calculation unit 24 sequentially calculates the geocentric orthogonal coordinates (X, Y, Z) for each position where the satellite positioning signal receiving antenna 10 is fixedly installed for each reception time of the satellite positioning signal. To do. In addition, the calculation process of the geocentric orthogonal coordinates is performed by dividing the 1200 points where the satellite positioning signal receiving antennas 10 are arranged throughout Japan into 39 groups, and satellites received by the satellite positioning signal receiving antennas 10 for each group. The process of calculating the geocentric orthogonal coordinates (X, Y, Z) of the satellite positioning signal receiving antennas 10 in the group using the positioning signal is sequentially performed for each group. Also, at this time, using the international geodetic reference points (IGS points; Tsukuba TSKB, Usuda USUD, Beijing BJFS, Shanghai SHAO, Taiwan Taoyuan TWTF, Guam GUAM) around Japan, the network average calculation is performed with the triangular network including the IGS points. Thus, the geocentric orthogonal coordinates (X, Y, Z) are calculated. Then, 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 receiving antenna 10 to the satellite. It is registered in the database in association with the time when the positioning signal is received (step S104).

  Further, when the antenna position calculation unit 24 calculates the geocentric orthogonal coordinates (X, Y, Z) of each satellite positioning signal receiving antenna 10, the ellipsoidal height of each satellite positioning signal receiving antenna 10 is calculated for each reception time of the satellite positioning signal. Calculate (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. Then, the antenna position calculation unit 24 calculates the ellipsoidal height in 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 receiving antenna. 10 is registered in the database in association with the time at which the satellite positioning signal is received from 10 (step S106). Then, the antenna position calculation unit 24, based on the satellite positioning signal received at every predetermined interval, has geocentric orthogonal coordinates (X, Y) at every predetermined interval at the position where each satellite positioning signal receiving antenna 10 is fixedly installed. , Z) and the ellipsoidal height values are continuously calculated for each satellite positioning signal reception time.

  Here, each coordinate measuring device 2 has 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 disaster emergency ground fluctuation analysis device 1 in advance. I have been notified. 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 reference time shifted by 3 hours and 6 o'clock is notified to each of the coordinate measuring devices 2A to 2H. Then, 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 notified reference time, and calculates the geocentric orthogonal coordinates and the ellipsoidal height calculated by the above processing. Among them, the information for every predetermined time (every 10 minutes) calculated from the reference time of the previous day to the reference time of the current day is read from the database 26, and the 24-hour average of the read geocentric orthogonal coordinates and ellipsoidal height is calculated. Then, the antenna ID of the satellite positioning signal receiving antenna 10 to be calculated, the geocentric orthogonal coordinates, and the 24-hour average of the ellipsoidal height are registered in the database 26 in association with each other. And the antenna position calculation result output part 15 of each coordinate measuring device 2 is based on the request | requirement from the disaster emergency ground fluctuation analysis apparatus 1, and the geocentric orthogonal coordinate and ellipse in each satellite positioning signal receiving antenna 10 for every predetermined space | interval. A 24-hour average of height will be transmitted.

  Next, the disaster emergency ground fluctuation analysis apparatus 1 receives a satellite positioning signal located in an analysis target area based on information received by an administrator's input in order to analyze the ground fluctuation in a certain area. The antenna position request information storing the antenna ID of the antenna 10 is transmitted to each coordinate measuring device 2. Then, each coordinate measuring device 2 transmits the 24-hour average of the geocentric orthogonal coordinates and the ellipsoidal height registered in the database 26 in association with the antenna ID to the disaster emergency ground fluctuation analysis device 1. In addition, the disaster emergency ground fluctuation analysis apparatus 1 stores the time range designation information in the antenna position request information, so that the 24-hour average geocentric orthogonal coordinates calculated in the time zone designated in the time range and the ellipsoidal height are stored. May be received. Accordingly, the disaster emergency ground fluctuation analysis device 1 uses the coordinate measuring device 2A to obtain the data on the center-centered orthogonal coordinates and the ellipsoidal height, for example, when the time range designation information is 9:00 to 8:59. 24 hours from 12:00 to 11:59 The average geocentric Cartesian coordinates and ellipsoidal height data from 12:00 to 11:59 are received from the coordinate measuring device 2B, and 24 hours from 15:00 to 14:59 Average geocentric orthogonal coordinates and ellipsoidal height data are received from the coordinate measuring device 2C, and similarly, 24-hour average geocentric orthogonal coordinates and ellipsoidal height data are received from the coordinate measuring devices 2D to 2H based on the reference time. To do.

Next, in the disaster emergency ground fluctuation analysis apparatus 1, the ground fluctuation analysis unit 14 obtains an average of 24 hours for each predetermined interval (three hours that is a deviation of the reference time) received separately from each coordinate measurement apparatus 2. Based on the reception of the geocentric Cartesian coordinates (X, Y, Z), each satellite positioning signal receiving antenna 10 is caused by the deviation of the geocentric Cartesian coordinates (X, Y, Z) at every predetermined interval (every 3 hours). The 24-hour average of the horizontal movement amount is calculated (step S107). Then, 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 geocentricity used for calculating the 24-hour average of the horizontal movement amount. The 24-hour average of the orthogonal coordinates and the time when the geocentric orthogonal coordinates are received are associated with each other and registered in the database 16 (step S108). The 24-hour average horizontal movement amount is the same as the satellite positioning signal after a predetermined interval from the time (X ₁ , Y ₁ , Z ₁ ) of the 24-hour average of the geocentric orthogonal coordinates of the satellite positioning signal receiving antenna 10. When the 24-hour average of the geocentric orthogonal coordinates of the receiving antenna 10 is (X ₂ , Y ₂ , Z ₂ ), it is (X ₂ −X ₁ , Y ₂ −Y ₁ ).

In addition, the ground fluctuation analysis unit 14 receives the ellipsoidal height of the average ellipsoidal height for each predetermined interval received from each coordinate measuring device 2, and the ellipse 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 difference in body height is calculated (step S109). Then, it is used for calculating the 24-hour average of the ground height fluctuation amount at each predetermined interval, the ID of the satellite positioning signal receiving antenna 10 that is the calculation target of the ground height fluctuation amount, and the 24-hour average of the ground height fluctuation amount. The average of the ellipsoidal height for 24 hours and the time when the ellipsoidal height was received are associated with each other and registered in the database 16 (step S110). The 24-hour average ground height fluctuation amount is the 24-hour average of the ellipsoidal height of the satellite positioning signal receiving antenna 10 at a certain time (D ₁ ), and the same satellite positioning signal receiving antenna 10 after a predetermined interval from that time. When the average of the ellipsoidal height for 24 hours is (D ₂ ), it is (D ₂ -D ₁ ).

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 ( X ₁ , Y ₁ , Z ₁ ), the 24-hour average of the ellipsoidal height is (D ₁ ), the 24-hour average of the horizontal displacement is (no value), and the 24-hour average of the ground height variation is (no value) In addition, at 15:00 on January 1, 2008 (200801101500) at the position where the satellite positioning signal receiving antenna 10 is fixedly installed, the 24-hour average of the geocentric orthogonal coordinates is (X ₂ , Y ₂ , Z ₂ ). The 24-hour average of the ellipsoidal height is (D ₂ ), the 24-hour average of the horizontal movement amount is (X ₂ -X ₁ , Y ₂ -Y ₁ ), and the 24-hour average of the ground height fluctuation amount is (D ₂ -D _1). ) And Further, at 18:00 (200801011800) on January 1, 2008 at the position where the satellite positioning signal receiving antenna 10 is fixedly installed, the 24-hour average of the geocentric orthogonal coordinates is (X ₃ , Y ₃ , Z ₃ ), The 24-hour average of the ellipsoidal height is (D ₃ ), the 24-hour average of the horizontal movement amount is (X ₃ -X ₂ , Y ₃ -Y ₂ ), and the 24-hour average of the ground height fluctuation amount is (D ₃ -D ₂ ). It is shown that.

  Then, by the processing of the ground fluctuation analysis unit 14 described above, a 24-hour average of the geocentric orthogonal coordinates for each predetermined interval for each satellite positioning signal receiving antenna 10, a 24-hour average of the ellipsoidal height, a 24-hour average of the horizontal movement amount, After the calculation result of the 24-hour average of the ground height fluctuation amount is 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. The result of the 24-hour average of the amount and the 24-hour average of the ground height fluctuation amount at predetermined intervals (in this embodiment, every 3 hours) is output to the monitor or printed (step S111).

FIG. 7 is a diagram illustrating an output example of the ground deformation analysis result of the height of the ellipsoid.
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 is 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. 7, even if the periodic change of ground deformation does not fit after an earthquake etc., output accurate ground deformation amount 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. The output results such as the geocentric Cartesian coordinates, horizontal movement amount, ground height fluctuation amount, etc. are output.

As mentioned above, although embodiment of this invention was described, according to the above-mentioned process, the coordinate measuring apparatus 2 receives the satellite positioning signal from many satellite positioning signal receiving antennas 10 fixedly installed throughout Japan through the communication network. Based on the received data, ground coordinates such as the 24-hour average geocentric Cartesian coordinates, ellipsoidal height, horizontal movement amount, ground height fluctuation amount of the specific satellite positioning signal receiving antenna 10 are converted into the coordinate measuring device 2 and the disaster. The emergency ground fluctuation analysis apparatus 1 can confirm immediately. 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 disaster emergency ground fluctuation analysis device 1 every shorter predetermined time (every 3 hours in the present embodiment), and the ground fluctuation in an area requiring urgency can be analyzed.

  In the above-described processing, the case where the disaster emergency ground fluctuation analysis apparatus 1 directly receives a satellite positioning signal from the coordinate measurement apparatus 2 has been described. However, the satellite positioning signal is transmitted via a satellite positioning signal storage server. A signal may be received.

  The above-mentioned disaster emergency ground fluctuation analysis apparatus 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.

It is a block diagram which shows the structure of a disaster emergency ground fluctuation analysis system. It is a functional block diagram of a disaster emergency ground fluctuation analysis apparatus. It is a figure which shows the processing flow of a disaster emergency ground fluctuation analysis apparatus. It is a figure which shows the calculation outline | summary of a geodetic coordinate and an ellipsoidal 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 which shows the example of an output of the ground deformation | transformation analysis result of an ellipsoidal height.

Explanation of symbols

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

Claims (8)

A disaster emergency ground fluctuation analysis system in which a plurality of coordinate measuring devices and a disaster emergency ground fluctuation analysis apparatus are connected via a communication network,
Each of the plurality of coordinate measuring devices is
Satellite positioning signal receiving means for receiving, via the communication network, satellite positioning signals received from the position observation satellites by a plurality of satellite positioning signal receiving antennas connected to the communication network and fixedly installed at a plurality of different points. ,
A reference time receiving means for receiving a reference time used for calculating a 24-hour average related to a calculation target from the disaster emergency ground fluctuation analysis device;
Based on the received satellite positioning signals for 24 hours and the reference time, geocentric orthogonality for calculating the 24-hour average geocentric orthogonal coordinates at the fixed positions of the satellite positioning signal receiving antennas. Coordinate calculation means,
The disaster emergency ground fluctuation analysis device,
A reference time notification means for notifying each of the plurality of coordinate measuring devices of a reference time used for calculating a 24-hour average related to the calculation object with a predetermined interval shifted;
The geocentric orthogonal coordinates of each of the plurality of satellite positioning signal receiving antennas averaged over 24 hours are received from the different coordinate measuring devices at each predetermined interval, and each of the satellite positioning signal receiving antennas is fixedly installed. A geocentric orthogonal coordinate variation result output means for outputting a geocentric orthogonal coordinate variation result indicating a 24-hour average geocentric orthogonal coordinate at each predetermined interval at a position;
A disaster emergency ground deformation analysis system characterized by comprising: Each of the coordinate measuring devices
Based on the calculated geocentric Cartesian coordinates of each of the satellite positioning signal receiving antennas and the reference time, the 24-hour average of the satellite positioning signal receiving antennas at the fixed intervals at the fixed positions of the satellite positioning signal receiving antennas. An ellipsoidal height calculating means for calculating an ellipsoidal height,
The disaster emergency ground fluctuation analysis device,
An ellipsoidal height variation result output means for outputting an ellipsoidal height variation result indicating the average ellipsoidal height for 24 hours at the predetermined interval at each of the fixed positions of the satellite positioning signal receiving antennas;
The disaster emergency ground fluctuation analysis system according to claim 1, comprising: The disaster emergency ground fluctuation analysis device,
Based on the 24-hour average geocentric orthogonal coordinates for each predetermined interval of each of the satellite positioning signal receiving antennas calculated, the 24-hour average for each predetermined interval corresponding to each geocentric orthogonal coordinate. A horizontal movement amount calculating means for calculating a horizontal movement amount;
Horizontal movement amount fluctuation result output means for outputting a horizontal movement amount fluctuation result displaying a calculation result of the 24-hour average horizontal movement amount at each predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas. When,
The disaster emergency ground fluctuation analysis system according to claim 2, further comprising: The disaster emergency ground fluctuation analysis device,
Based on the ellipsoidal height of the 24-hour average ellipsoidal height at each of the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas, the predetermined positions at the fixed positions of the satellite positioning signal receiving antennas. A ground height fluctuation amount calculating means for calculating the average ground height fluctuation amount for each 24-hour interval;
Ground height fluctuation fluctuations for outputting ground height fluctuation fluctuation results indicating the calculation results of the 24-hour average ground height fluctuations at the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. A result output means;
The disaster emergency ground fluctuation analysis system according to claim 2 or 3, characterized by comprising: A disaster emergency ground fluctuation analysis method in a disaster emergency ground fluctuation analysis system in which a plurality of coordinate measuring devices and a disaster emergency ground fluctuation analysis apparatus are connected via a communication network,
The satellite positioning signal received by each of the plurality of coordinate measuring devices is received from the position observation satellite by each of the plurality of satellite positioning signal receiving antennas connected to the communication network and fixedly installed at a plurality of different points. Is received via a communication network,
The reference time receiving means of each of the plurality of coordinate measuring devices receives a reference time used for calculating a 24-hour average related to a calculation target from the disaster emergency ground fluctuation analysis device,
The geocentric orthogonal coordinate calculation means of each of the plurality of coordinate measuring devices is configured to fix the position of each of the satellite positioning signal receiving antennas based on the received satellite positioning signals for 24 hours and the reference time. Calculating the 24-hour average geocentric Cartesian coordinates at
The reference time notifying means of the disaster emergency ground fluctuation analysis device notifies each of the plurality of coordinate measuring devices of a reference time used for calculating a 24-hour average related to the calculation object with a predetermined interval shifted,
Geocentric orthogonal coordinate fluctuation result output means of the disaster emergency ground fluctuation analysis device is configured to output the geocentric orthogonal coordinates of each of the plurality of satellite positioning signal receiving antennas averaged over 24 hours from the different coordinate measuring devices at the predetermined intervals. And a geocentric orthogonal coordinate variation result indicating a 24-hour average geocentric orthogonal coordinate at each predetermined interval at each fixed position of each satellite positioning signal receiving antenna is output. Disaster emergency ground deformation analysis method. Each ellipsoidal height calculating means of the coordinate measuring device is fixedly installed for each of the satellite positioning signal receiving antennas based on the calculated geocentric coordinates of each of the satellite positioning signal receiving antennas and the reference time. Calculating the 24-hour average ellipsoidal height at each predetermined interval in position;
The ellipsoidal height fluctuation result output means of the disaster emergency ground fluctuation analysis device shows the ellipsoidal height fluctuation result indicating the average ellipsoidal height for 24 hours at the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. The disaster emergency ground fluctuation analysis method according to claim 5, wherein: The horizontal movement amount calculation means of the disaster emergency ground fluctuation analysis device is configured to calculate the geocentric orthogonal coordinates based on the calculated 24-hour average geocentric orthogonal coordinates for each predetermined interval of the satellite positioning signal receiving antennas. Calculating the horizontal movement amount of the 24-hour average for each predetermined interval corresponding to each;
The horizontal movement amount fluctuation result output means of the disaster emergency ground fluctuation analysis device calculates the calculation result of the 24-hour average horizontal movement amount at each predetermined interval at the fixed position of each of the satellite positioning signal receiving antennas. The displayed horizontal movement amount fluctuation result is output. The disaster emergency ground fluctuation analysis method according to claim 6. The ground height fluctuation amount calculation means of the disaster emergency ground fluctuation analysis device is configured to calculate the satellite height based on the average ellipsoidal height for each of the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. Calculating the 24-hour average ground height fluctuation amount for each of the predetermined intervals at the fixedly installed positions of the respective positioning signal receiving antennas;
The ground height fluctuation amount fluctuation result output means of the disaster emergency ground fluctuation analysis device calculates the 24-hour average ground height fluctuation amount at the predetermined intervals at the fixed positions of the satellite positioning signal receiving antennas. 8. The disaster emergency ground fluctuation analysis method according to claim 6 or 7, wherein the ground height fluctuation amount fluctuation result displaying the result is output.

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