JP2005241455A - Observation plan managing program and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a program and a method for managing observation plans, capable of managing an observation plan of a satellite so as to be able to obtain available observation data with a high utility value. <P>SOLUTION: The program enables a computer which manages the observation plan comprising at least items of observation element and observation area of the satellite, to perform a determination procedure which determines whether or not a second set of observation element and observation area 302 with a priority higher than that of a first set of observation element and observation area 301 making up the observation plan exists in an observable area 300 of the satellite; and a changing procedure which changes the observation plan so that the second set of observation element and observation area 302 is observed, in the case such a determination is made in the determination procedure that the second set of observation element and observation area 302 exists therein. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an observation plan management program and an observation plan management method, and more particularly to an observation plan management program and an observation plan management method for managing an observation plan of an artificial satellite.

  An orbiting satellite as an example of an artificial satellite that performs imaging such as imaging of the ground surface according to a planned observation plan may not always be able to observe the required area because of, for example, clouds on the ground surface. It was. This is because the orbiting satellite imaged the ground surface according to the observation plan planned in advance.

2. Description of the Related Art Conventionally, there has been a satellite-mounted device that observes the ground while avoiding the influence of clouds by imaging the cloud condition near the ground in the forward direction of the orbiting satellite and selecting an imaging path (see, for example, Patent Document 1). ). There is also an artificial satellite system in which information obtained from weather forecast data of a numerical weather forecast model is acquired in advance and reflected in an observation plan.
JP 2001-122199 A

  The above satellite-mounted device is a rough one that selects an imaging path based solely on the cloud condition, and changes the observation plan based on the appropriate determination conditions for various observation data that the orbiting satellite is trying to acquire. I could not. Moreover, since the above-mentioned artificial satellite system reflects the clear sky discrimination result according to the rough weather forecast data as input data in the observation plan, the orbiting satellite could not be controlled according to the local observation plan.

  In addition, high-resolution observation data for areas that are impressive to the user (areas where typhoons are occurring, sea surface temperature, ground surface temperature, etc., showing anomalies called anomalies with large differences from the average value) It was not readily available.

  In order to obtain observation data that is effective and useful in limited imaging opportunities, it is necessary to change the local observation plan based on appropriate judgment conditions for various observation data that the orbiting satellite is trying to acquire. It was necessary. In other words, in order to obtain observation data that is effective for limited imaging opportunities and has high utility value, it is necessary to control detailed observation elements (observation targets) and observation areas (imaging areas).

  The present invention has been made in view of the above points, and an observation plan management program and an observation plan management method capable of managing an observation plan of an artificial satellite so as to obtain observation data that is effective and has high utility value The purpose is to provide.

  Therefore, in order to solve the above-described problem, the present invention provides a computer that manages an observation plan including at least the observation elements and observation area items of the artificial satellite, and configures the observation plan in the observable area of the artificial satellite. A determination procedure for determining whether or not there is a second observation element and an observation region having a higher priority than the observation element and observation region, and the determination procedure determines that the second observation element and the observation region are present And an observation plan management program for executing a change procedure for changing the observation plan so as to observe the second observation element and the observation area.

  The present invention also relates to a computer-aided observation plan management method for managing an observation plan comprising at least the observation elements and observation area items of an artificial satellite, wherein the observation plan is configured in the observable area of the artificial satellite. Determining whether or not there is a second observation element and observation region having a higher priority than the observation element and observation region, and determining that the second observation element and observation region are present, And changing the observation plan so as to observe two observation elements and observation areas.

  The present invention provides the second observation element and the observation when there are the first observation element and the observation area having higher priority than the first observation element and the observation area constituting the observation plan in the observable area of the artificial satellite. The observation plan has been changed to observe the area. That is, the observation plan is changed so as to observe observation elements and observation areas with high priority.

  Therefore, since the present invention can automatically change the observation plan so as to observe observation elements and observation areas that are impressed by the user, high-resolution observation data can be easily obtained for the areas that are impressed by the user. It is.

  ADVANTAGE OF THE INVENTION According to this invention, the observation plan management program and observation plan management method which can manage the observation plan of an artificial satellite so that observation data with effective and high utility value can be obtained can be provided.

  Next, the best mode for carrying out the present invention will be described based on the following embodiments with reference to the drawings. First, in order to facilitate understanding of the present invention, the principle of the present invention will be briefly described.

  Artificial satellites are classified into geostationary satellites that appear to be stationary from the ground by moving at the same angular velocity as the earth's rotation, and orbiting satellites that are not stationary satellites. Currently, many geostationary and orbiting satellites are in operation. Orbiting satellites generally have high resolution and are used as, for example, earth observation satellites. In addition, geostationary satellites generally have low resolution, and are used as, for example, geostationary meteorological satellites. Geostationary meteorological satellites perform wide-area observations around the world, for example, every 15 minutes, 30 minutes, or 1 hour. Orbiting satellites and geostationary meteorological satellites have their respective advantages, and it is possible to obtain great effects by sharing observation data with each other.

  For example, cloud images (cloud cover information) observed by geostationary meteorological satellites are actually measured data, so they are more accurate than the above-mentioned weather forecast data, and cloud coverage is not available for orbiting satellites that can adjust the pointing angle and tilt angle. It is possible to provide more accurate information on areas that are not. Note that the adjustment of the pointing angle is to shift the imaging region laterally with respect to the traveling direction. The adjustment of the tilt angle is to shift the imaging region in the front-rear direction with respect to the traveling direction.

  FIG. 1 is a schematic diagram showing the contents of changing the imaging area of an orbiting satellite when observing the ground surface. Regions A and B in FIG. 1 schematically represent the position of the planned imaging region. FIG. 1 shows an example in which there are more clouds in the region A than in the region B. When observing the ground surface, by observing the region B with few clouds instead of the region A with many clouds, more observation data of the ground surface not covered with clouds can be acquired, and the utility value of the observation data is Rise.

  Here, regions A and B are orbiting satellite observation systems that perform observations with orbiting satellites, and are limited to a range that can be imaged at the same time in one orbit (one pass). For example, when the size of one scene by the orbiting satellite observation system is about 70 km square and the pointing angle can be adjusted by 0.01 degrees (120 m), the region can be shifted up to 400 km.

  Note that the observation data to be acquired by the orbiting satellite is not limited to the area with few clouds as described above. For example, in observation data, areas with a lot of clouds (typhoons, torrential rain, etc.) may be important. In addition, the observed data may be important in areas where the sea surface temperature and ground surface temperature are abnormally high (submarine volcanic eruptions, wildfires, etc.), even in areas with few clouds.

  In the present invention, the observation target and the imaging area are determined so that more detailed observation data is observed by the orbiting satellite from the observation data observed by the geostationary meteorological satellite. The abnormal values of the sea surface temperature and the ground surface temperature can be calculated for each pixel of the scene of the geostationary meteorological satellite observation system that performs observation by the geostationary meteorological satellite by taking a difference from the average value in the same period.

  FIG. 2 is a configuration diagram of an example of a data exchange processing system. The data exchange processing system of FIG. 2 includes a geostationary meteorological satellite observation system 10, an observation target information table 11, an effective observation area information table 12, an orbiting satellite observation system 20, an observation plan table 21, and an effective area observation table 22. And an effective area observation data 23, an inter-satellite observation system interface adjustment system 30, an observation priority definition table 31, and an abnormal value definition table 32.

  The geostationary meteorological satellite observation system 10 includes a geostationary meteorological satellite and a ground station. The orbiting satellite observation system 20 includes orbiting satellites and ground stations. In addition, the inter-satellite observation system interface adjustment system 30 includes, for example, one or more servers. The geostationary meteorological satellite observation system 10, the orbiting satellite observation system 20, and the inter-satellite observation system interface adjustment system 30 are connected via a network 40 such as a LAN or the Internet, and can exchange data.

  The geostationary meteorological satellite observation system 10 observes the observation target according to the observation target information table 11 of FIG. 3 and writes the observation data into the effective observation area information table 12 of FIG. FIG. 3 is a configuration diagram of an example of the observation target information table 11. FIG. 4 is a configuration diagram of an example of the effective observation area information table 12.

  The observation target information table 11 in FIG. 3 includes observation element numbers and observation targets. The observation element number is a number for identifying the observation element. The observation target is an observation element that can be observed by a geostationary meteorological satellite. The effective observation area information table 12 of FIG. 4 is composed of geostationary meteorological satellite names, observation data / central latitude and longitude, observation element numbers, and times. The geostationary meteorological satellite name is the name of the target geostationary meteorological satellite. The observation data / center latitude / longitude is observation data of the imaging region whose center is expressed by latitude and longitude. The time is the time when the observation was performed. The geostationary meteorological satellite observation system 10 may use observation data directly received by installing a satellite data receiving device, or may use observation data distributed from the Japan Meteorological Agency.

  The orbiting satellite observation system 20 observes the observation target according to the effective area observation table 22 as shown in FIG. 5, and writes the observation data into the effective area observation data 23 as shown in FIG. FIG. 5 is a configuration diagram of an example of the effective area observation table 22. FIG. 6 is a configuration diagram of an example of effective area observation data. The effective area observation table 22 in FIG. 5 includes orbiting satellite names, times, imaging areas (longitude, latitude), observation element numbers, pointing angles, and tilt angles. The orbiting satellite name is the name of the target orbiting satellite. The time is the time when the observation is scheduled. The imaging area is an imaging area represented by longitude and latitude. The pointing angle is an adjustment amount of the imaging region in the lateral direction with respect to the traveling direction. The tilt angle is an adjustment amount of the imaging region in the front-rear direction with respect to the traveling direction.

  The effective area observation data 23 in FIG. 6 includes a name of the orbiting satellite, observation data (longitude and latitude), observation element number, and time. Observation data (longitude, latitude) is observation data of an imaging region represented by latitude and longitude. The time is the time when the observation was performed.

  Further, the orbiting satellite observation system 20 creates the effective area observation table 22 of FIG. 5 according to the observation plan table 21 of FIG. The creation of the effective area observation table 22 may be performed when the contents of the observation plan table 21 are changed, or may be performed every predetermined time (for example, every hour).

  FIG. 7 is a configuration diagram of an example of the observation plan table 21. The observation plan table 21 includes orbiting satellite names, times, imaging areas (latitudes, longitudes), and observation element numbers. The observation plan table 21 in FIG. 7 is different from the effective area observation table 22 in FIG. 5 in that the pointing angle and tilt angle are not included as items. The observation plan table 21 is set or changed according to a request from the orbiting satellite observation system 20 or the inter-satellite observation system interface adjustment system 30.

  The inter-satellite observation system interface adjustment system 30 reads the information in the effective observation area information table 12 from the geostationary meteorological satellite observation system 10 and uses the observation priority definition table 31 and the abnormal value definition table 32 to determine the current observation target and It is determined whether or not there is an observation target and an imaging scheduled area with higher priority than the imaging scheduled area.

  If there is an observation target and imaging target area with higher priority than the current observation target and imaging target area, the inter-satellite observation system interface adjustment system 30 observes the observation target and imaging target area with higher priority. A change request for changing the contents of the observation plan table 21 is made to the orbiting satellite observation system 20.

  Details of the processing of the interface adjustment system 30 between the satellite observation systems and the configuration of the observation priority definition table 31 and the abnormal value definition table 32 will be described later. 6 is distributed to the geostationary meteorological satellite observation system 10 via the inter-satellite observation system interface adjustment system 30 as necessary. The interface adjustment system 30 between the satellite observation systems plays a role of adjusting the data interface between the geostationary satellite observation system 10 and the orbiting satellite observation system 20.

  At present, the Earth Observation Center of the Japan Aerospace Exploration Agency needs to determine the observation plan for the orbiting satellite by 4 and a half hours before imaging. However, by speeding up the computer and network, or improving the efficiency of the procedure for determining the observation plan, It is likely to be shortened. Therefore, it is considered that the observation data with higher utility value can be acquired for the user by reflecting the information obtained from the geostationary meteorological satellite in the observation plan table 21 of the orbiting satellite in near real time (for example, within one hour).

  FIG. 8 is an example data format representing an image of one scene that can be captured by a geostationary meteorological satellite. The data format of FIG. 8 represents an imaging area surrounded by 60 degrees north latitude, 60 degrees south latitude, 80 degrees east longitude, and 160 degrees west longitude. The imaging area is divided into grids having a grid resolution of 0.05 degrees and is 2400 ×. A 2400 square lattice coordinate system is used. In the data format of FIG. 8, one grid (for example, the shaded portion in FIG. 8) corresponds to one pixel.

  The geostationary meteorological satellite observation system 10 extracts observation data corresponding to the observation target in the observation target information table 11 for each pixel in FIG. 8 from the image captured by the geostationary meteorological satellite, and the observation data is the effective observation area information table 12. Can be written on. In addition, the geostationary meteorological satellite observation system 10 can calculate information necessary for calculating the abnormal value of the observation data by the inter-satellite observation system interface adjustment system 30 and provide the information to the inter-satellite observation system interface adjustment system 30.

  FIG. 9 is a configuration diagram of an example of the abnormal value definition table 32. The abnormal value definition table 32 in FIG. 9 includes observation element numbers, observation objects, and types of information and threshold values necessary for calculating abnormal values of observation data. That is, the abnormal value definition table 32 defines the types of information and threshold values necessary for calculating the abnormal value of the observation data for each observation target. The information necessary for calculating the abnormal value of the observation data includes threshold values such as the typhoon center (longitude, latitude), precipitation intensity index, etc. in addition to the amount of clouds in the basic grid.

  Here, a method of calculating the cloud amount in the basic lattice will be briefly described. Details of the method of calculating the cloud amount in the basic grid are described in “Meteorological Satellite Center Technical Report Special Issue (1989) II, GMS System Update General Report (1989 Edition), II Data Processing”.

  For example, the algorithm for calculating the amount of clouds in the basic grid calculates the daily frequency distribution for each pixel in the target area using the reflectance (albedo) obtained by the visible sensor and the luminance temperature obtained by the infrared sensor, The cloud amount is estimated by obtaining the ratio exceeding the threshold set in the season. When the size of one scene of the orbiting satellite is about 70 km square, the cloud amount in an area of 150 km square is calculated in consideration of cloud movement (± 40 km) for one hour. In such an algorithm, it is possible to have numerically the ratio of the amount of clouds contained in a lattice divided by equally spaced longitude and latitude.

  In addition to the typhoon center (longitude, latitude), precipitation intensity index, and other information necessary for calculating the abnormal values of the observation data included in FIG. The same principle can be extracted from (physical quantity). An example of such a principle is `` Tanahashi, S., H. Kawamura, T. Matsuura, T. Takahashi and H. Yusa (2000): Improved estimates of wide-ranging sea surface temperature from GMS S-VISSR data, J. Oceanogr., 56, 345-358, '' Tanahashi, S., H. Kawamura, T. Matsuura, T. Takahashi and H. Yusa (2001): A system to distribute satellite incident solar radiation in real time, Remote Sens. Environ ., 75, 412-422.

  Accordingly, the geostationary meteorological satellite observation system 10 can specify the longitude and latitude, and can provide the information necessary for calculating the observation data and the abnormal value of the observation data to the inter-satellite observation system interface adjustment system 30. Information necessary for calculating the abnormal value of the observation data is provided in a data format as shown in FIGS. 10 and 11, for example.

  FIG. 10 shows a data format of typhoon information among information necessary for calculating an abnormal value of observation data. FIG. 11 shows a data format other than the typhoon information among the information necessary for calculating the abnormal value of the observation data. 10 and 11 include a header portion and a data portion, and typhoon information or information other than typhoon information is stored in the data portion.

  When the satellite observation system interface adjustment system 30 receives the observation data and the information necessary for calculating the abnormal value of the observation data from the geostationary meteorological satellite observation system 10, the observation plan change request process is started.

  FIG. 12 is a flowchart of an example of the observation plan change request process and the observation plan change process. The flowchart of FIG. 12 represents an observation plan change request process performed by the inter-satellite observation system interface adjustment system 30 and an observation plan change process performed by the orbiting satellite observation system 20. Steps S1 to S7 represent observation plan change request processing. Steps S8 to 10 represent observation plan change processing.

  In step S1, the inter-satellite observation system interface adjustment system 30 receives the observation data and information necessary for calculating the abnormal value of the observation data from the geostationary meteorological satellite observation system 10 every predetermined time. In step S2, the inter-satellite observation system interface adjustment system 30 extracts the received observation data and information necessary for calculating an abnormal value of the observation data.

  In step S3, the interface adjustment system 30 between the satellite observation systems reads out the information type and threshold necessary for calculating the abnormal value of the observation data from the abnormal value definition table 32 of FIG. Using the type of information and the threshold value necessary for calculating the observation data, an observation data area indicating an abnormal value is selected from the observation data received from the geostationary meteorological satellite observation system 10.

  For example, when the observation target is a precipitation area, it is received from the geostationary meteorological satellite observation system 10 using the type of information “precipitation intensity index” and the threshold value “30 mm / h or more” necessary for calculating the abnormal value of the observation data. Among the observation data, the area of the observation data that satisfies the kind of information “precipitation intensity index” and the threshold value “30 mm / h or more” necessary to calculate the abnormal value of the observation data Select as region.

  FIG. 13 is a conceptual diagram relating to management of observation data areas, observation element numbers, and times indicating abnormal values. An image 100 of one scene that can be captured by the geostationary meteorological satellite includes an observation data area 101 indicating an abnormal value related to observation element number 1 and an observation data area 102 indicating an abnormal value related to observation element number 5. Is represented. Information on the areas 101 and 102 indicating abnormal values is stored in the table 110 in descending order of priority. The table 110 in FIG. 13 stores imaging areas, observation element numbers, and times as information on the areas 101 and 102 indicating abnormal values. Here, an example in which priorities are set in the order of observation element numbers in the abnormal value definition table 32 will be described, but it may be changed as necessary. In the table 110 of FIG. 13, the information of the area 101 with high priority is stored before the information of the area 102 with low priority.

  In step S4, the inter-satellite observation system interface adjustment system 30 compares the table 110 in FIG. 13 with the observation priority definition table 31 in FIG. 14, and selects the region with the highest priority and the observation target. FIG. 14 is a configuration diagram of an example of the observation priority definition table 31.

  The observation priority definition table 31 in FIG. 14 includes an imaging region (center latitude and longitude), observation element number, time, observation request priority, imaging schedule / substitute flag, and requester information of the observation request. It consists of and. The imaging area (latitude and longitude of the center) is an imaging area represented by the longitude and latitude of the center. The time is the time when imaging is scheduled. The priority of the observation request is the priority of the observation request. The imaging plan / substitute flag is a flag for identifying whether the observation request is an imaging plan or a substitute. The requester information of the observation request is information of the requester who made the observation request.

  That is, the observation priority definition table 31 stores, among existing observation requests, an observation request that is scheduled to be imaged with the highest priority and a supplementary observation request with a lower priority. Step S4 checks the priority of the area information stored in the table 110 of FIG. 13 and the observation request stored in the observation priority definition table 31 of FIG. If the priority of the information in the area is highest, the process proceeds to step S5. The priority check in step S4 may give priority to observation requests from requesters with high authority in consideration of requester information of observation requests. If the priority of the observation request stored in the observation priority definition table 31 is the highest, the process ends.

The priority check in step S4 is performed as shown in FIG. 15, for example. FIG. 15 is a conceptual diagram of an example of a priority check. In an image 200 of one scene that can be captured by the geostationary meteorological satellite, a region 201 indicating an ant at 1 ° C. of the ground surface temperature and a region 202 indicating an ant at 5 ° C. of the ground surface temperature are represented. In the case of FIG. 15, since the area 202 has a higher priority than the area 201, the scheduled imaging area is changed from the area 201 (2 (λ ₂ −λ ₁ ) / 4, 3 (φ ₁ −φ ₂ ) / 4). The region 202 (4 (λ ₂ −λ ₁ ) / 4, 2 (φ ₁ −φ ₂ ) / 4) is changed.

  In step S <b> 5, the inter-satellite observation system interface adjustment system 30 reads an imageable area from the observation plan table 21. In step S6, the inter-satellite observation system interface adjustment system 30 determines whether or not the area stored in the table 110 is within the imageable area. If it is not within the imageable region (NO in S6), the inter-satellite observation system interface adjustment system 30 returns to step S4. On the other hand, if it is within the imageable region (YES in S6), the inter-satellite observation system interface adjustment system 30 proceeds to step S7, and the observation plan table 21 so as to observe the region and the observation target stored in the table 110. A change request for changing the contents of is made to the orbiting satellite observation system 20.

  In step S8, the orbiting satellite observation system 20 changes the imaging area of the observation plan table 21 in response to a request from the inter-satellite observation system interface adjustment system 30. Thereafter, the orbiting satellite observation system 20 creates an effective area observation table 22 according to the observation plan table 21 in which the imaging area is changed.

  In step S 9, the orbiting satellite observation system 20 controls the orbiting satellites according to the effective area observation table 22. In step S10, the orbiting satellite observation system 20 observes the observation target according to the effective area observation table 22 with high resolution, and creates observation data (product) with high resolution.

  FIG. 16 is a conceptual diagram illustrating an example of an imaging plan area before being changed by the observation plan change request process and the observation plan change process and an imaging plan area after being changed. In the imageable area 300 in which the orbiting satellite can image by adjusting the pointing angle, an imaging planned area 301 before the change and an imaging scheduled area 302 after the change are shown. In the case of FIG. 16, the scheduled imaging area 302 has a higher priority than the scheduled imaging area 301, so the scheduled imaging area 301 is changed to the scheduled imaging area 302.

  In the present embodiment, an example in which the planned imaging area is changed by adjusting the pointing angle and tilt angle of the orbiting satellite has been described. However, the planned imaging area may be changed by adjusting the orbit of the orbiting satellite. In the flowchart of FIG. 12, after performing the priority check in step S4, it is determined in steps S5 and S6 whether the region showing the abnormal value is within the imageable region, but the abnormal value is shown. A priority check may be performed after determining whether the area is within the image pickup possible area.

  Next, a hardware configuration for realizing the inter-satellite observation system interface adjustment system 30 will be described. FIG. 17 is a hardware configuration diagram of an example of the interface adjustment system 30 between the satellite observation systems.

  17 includes an input device 401, a display device 402, a drive device 403, an auxiliary storage device 405, a memory device 406, and an arithmetic unit connected to each other via a bus B. A processing device 407 and an interface device 408 are included. Various devices constituting the inter-satellite observation system interface adjustment system 30 may be housed in one housing or may be housed in a plurality of housings.

  The input device 401 includes a keyboard, a mouse, and the like, and is used for inputting various operation instructions. The display device 402 includes a display and displays various windows and data necessary for operation. The interface device 408 is an interface for connecting to the network 40, and includes, for example, a modem, a router, and the like.

  An observation plan management program for controlling the inter-satellite observation system interface adjustment system 30 is provided by a recording medium 404 such as a CD-ROM. The recording medium 404 in which the observation plan management program is recorded is set in the drive device 403, and the observation plan management program is installed in the auxiliary storage device 405 via the drive device 403.

  The recording medium 404 on which the observation plan management program is recorded is a recording medium for recording information optically, electrically or magnetically, such as a CD-ROM, flexible disk, magneto-optical disk (MO), or ROM, Various types of recording media, such as a semiconductor memory that electrically records information, such as a flash memory, can be used.

  The observation plan management program includes a program recorded in a recording medium of another computer connected via the interface device 408. An observation plan management program recorded on a recording medium or the like of another computer is downloaded via the interface device 408 and installed in the auxiliary storage device 405.

  The auxiliary storage device 405 stores the installed observation plan management program and various files necessary for the processing of the observation plan management program. The memory device 406 reads and stores the observation plan management program from the auxiliary storage device 405 at the time of activation. The arithmetic processing unit 407 realizes the observation plan change request process as described above according to the observation plan management program stored in the memory device 406.

  2, the orbiting satellite observation system 20 and the inter-satellite observation system interface adjustment system 30 are provided separately. However, the orbiting satellite observation system 20 and the inter-satellite observation system interface adjustment system 30 are provided separately. May be a single system.

  In the data exchange processing system of the present invention, by using the observation data of the geostationary meteorological satellite observation system 10, the imaging region can be changed so that observation data with high utility value can be observed by the orbiting satellite observation system 20.

  The present invention can be used by users who use optical sensors of orbiting satellites (land use research organizations, meteorological / marine / disaster prevention / environmental survey related organizations, etc.), and can perform observations from global phenomena to local land use surveys. Convenience in data acquisition is improved.

The present invention may have the following configurations as described below.
(Appendix 1)
At least a computer that manages the observation plan that consists of the observation elements and observation area items of the satellite,
A determination procedure for determining whether or not the observable area of the artificial satellite includes the first observation element and the observation area having higher priority than the first observation element and the observation area constituting the observation plan;
An observation plan for executing a change procedure for changing the observation plan so as to observe the second observation element and the observation area when the determination procedure determines that the second observation element and the observation area are present. Management program.
(Appendix 2)
The determination procedure includes obtaining observation data of the observation element in an observation area wider than the observable area of the artificial satellite, comparing the observation data with a predetermined threshold, and detecting abnormal observation data;
The priority of the observation element and the observation area corresponding to the abnormal observation data is higher than the priority of the first observation element and the observation area constituting the observation plan, and the observation area corresponding to the abnormal observation data is The observation plan management program according to claim 1, further comprising a step of determining an observation element and an observation area corresponding to the abnormal observation data as the second observation element and an observation area when included in the observable area of the artificial satellite. .
(Appendix 3)
The observation plan management program according to appendix 2, wherein the observation data of the observation element is acquired from a system of another artificial satellite capable of observing a wide observation area with a lower resolution than the artificial satellite.
(Appendix 4)
The observation plan management according to any one of appendices 1 to 3, wherein the observation element includes any one or more of a ground surface temperature, a precipitation region, a typhoon, a sea surface temperature, a snow and ice region, and a solar radiation amount. program.
(Appendix 5)
The observation plan management program according to any one of appendices 1 to 4, wherein the observation area is changed by adjusting a pointing angle and a tilt angle of the artificial satellite.
(Appendix 6)
The observation plan management program according to any one of appendices 1 to 4, wherein the observation region is changed by adjusting an orbit of the artificial satellite.
(Appendix 7)
An observation plan management method for a computer that manages an observation plan consisting of at least observation elements and observation area items of a satellite,
Determining whether or not the observable area of the artificial satellite has a first observation element and an observation area having a higher priority than the first observation element and the observation area constituting the observation plan;
And a step of changing the observation plan so as to observe the second observation element and the observation area when it is determined that the second observation element and the observation area are present. .
(Appendix 8)
An observation plan management device for managing an observation plan consisting of at least observation elements and observation area items of a satellite,
Means for determining whether or not the observable area of the artificial satellite includes a first observation element and an observation area having a higher priority than the first observation element and the observation area constituting the observation plan;
An observation plan management apparatus comprising: means for changing the observation plan so as to observe the second observation element and the observation area when it is determined that the second observation element and the observation area are present. .
(Appendix 9)
A satellite observation system for managing an observation plan comprising at least observation elements and observation area items of a satellite and controlling the satellite,
Means for determining whether or not the observable area of the artificial satellite includes a first observation element and an observation area having a higher priority than the first observation element and the observation area constituting the observation plan;
Means for requesting a change of the observation plan to observe the second observation element and the observation area when it is determined that the second observation element and the observation area are present;
Means for controlling the artificial satellite so as to observe according to the observation plan.

  The observation plan management device corresponds to the inter-satellite observation system interface adjustment system 30, and the artificial satellite observation system corresponds to the orbiting satellite observation system 20 and the inter-satellite observation system interface adjustment system 30.

  The present invention is not limited to the specifically disclosed embodiments, and various modifications and changes can be made without departing from the scope of the claims.

It is a schematic diagram showing the content which changes the imaging area of an orbiting satellite when observing the ground surface. It is a block diagram of an example of a data exchange processing system. It is a block diagram of an example of an observation object information table. It is a block diagram of an example of an effective observation area information table. It is a block diagram of an example of an effective area | region observation table. It is a block diagram of an example of effective area | region observation data. It is a block diagram of an example of an observation plan table. It is an example data format showing the image of one scene which a geostationary meteorological satellite can image. It is a block diagram of an example of an abnormal value definition table. It is a data format of typhoon information among information necessary for calculating an abnormal value of observation data. It is a data format other than typhoon information among information necessary for calculating an abnormal value of observation data. It is a flowchart of an example of an observation plan change request process and an observation plan change process. It is a conceptual diagram regarding the management of the area | region of observation data which shows an abnormal value, an observation element number, and time. It is a block diagram of an example of an observation priority definition table. It is a conceptual diagram of an example of a priority check. It is a conceptual diagram of an example showing an imaging plan area before being changed by an observation plan change request process and an observation plan change process and an imaging plan area after being changed. It is a hardware block diagram of an example of the interface adjustment system between artificial satellite observation systems.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Geostationary meteorological satellite observation system 11 Observation target information table 12 Effective observation area information table 20 Orbiting satellite observation system 21 Observation plan table 22 Effective area observation table 23 Effective area observation data 30 Interface adjustment system between satellite observation systems 31 Observation priority definition Table 32 Abnormal value definition table 40 Network 401 Input device 402 Display device 403 Drive device 404 Recording medium 405 Auxiliary storage device 406 Memory device 407 Arithmetic processing device 408 Interface device

Claims (5)

At least a computer that manages the observation plan that consists of the observation elements and observation area items of the satellite,
A determination procedure for determining whether or not the observable area of the artificial satellite includes the first observation element and the observation area having higher priority than the first observation element and the observation area constituting the observation plan;
An observation plan for executing a change procedure for changing the observation plan so as to observe the second observation element and the observation area when the determination procedure determines that the second observation element and the observation area are present. Management program. The determination procedure includes obtaining observation data of the observation element in an observation area wider than the observable area of the artificial satellite, comparing the observation data with a predetermined threshold, and detecting abnormal observation data;
The priority of the observation element and the observation area corresponding to the abnormal observation data is higher than the priority of the first observation element and the observation area constituting the observation plan, and the observation area corresponding to the abnormal observation data is The observation plan management according to claim 1, further comprising: a step of determining an observation element and an observation area corresponding to the abnormal observation data as the second observation element and an observation area when included in the observable area of the artificial satellite. program.   The observation plan management program according to claim 2, wherein observation data of the observation element is acquired from a system of another artificial satellite capable of observing a wide observation area with a lower resolution than the artificial satellite.   The observation plan according to any one of claims 1 to 3, wherein the observation element includes any one or more of a ground surface temperature, a precipitation area, a typhoon, a sea surface temperature, a snow and ice area, and a solar radiation amount. Management program. An observation plan management method for a computer that manages an observation plan consisting of at least observation elements and observation area items of a satellite,
Determining whether or not the observable area of the artificial satellite has a first observation element and an observation area having a higher priority than the first observation element and the observation area constituting the observation plan;
And a step of changing the observation plan so as to observe the second observation element and the observation area when it is determined that the second observation element and the observation area are present. .

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