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CN-121997536-A - Distribution method for improving remote sensing constellation target capacity by three-dimensional coordinate and different star fusion

CN121997536ACN 121997536 ACN121997536 ACN 121997536ACN-121997536-A

Abstract

The distribution method for improving the target capacity of the remote sensing constellation through three-dimensional coordinate different-star fusion comprises the steps of generating two-dimensional coordinates of the same observation target group on two task satellites for executing observation tasks, carrying out three-dimensional coordinate fusion and numbering sequencing based on the two-dimensional coordinates, distributing two-dimensional coordinates which are not fused to satellites for not executing the observation tasks according to the upper limit of the capability of the satellites for calculating the three-dimensional coordinates, carrying out three-dimensional coordinate fusion on the satellites for not executing the observation tasks by receiving the two-dimensional coordinates with consistent numbers sent by the two satellites, successfully fusing within the upper limit of the capability of the satellites for calculating the three-dimensional coordinates, then returning the two-dimensional coordinates to the task satellites, sending a part exceeding the upper limit of the capability of the satellites for calculating the three-dimensional coordinates to another satellite for not executing the observation tasks, and so on until all the two-dimensional coordinates are fused, and increasing the target capacity of satellite tracking. The invention overcomes the limitation of the existing single-satellite computing capability and provides a mode that satellites in static orbit networking do not need interaction through fixed rules.

Inventors

  • LIU YUXIN
  • HUANG ZITENG
  • Qu han
  • MI FEI
  • LIU JIAN

Assignees

  • 中国空间技术研究院

Dates

Publication Date
20260508
Application Date
20251212

Claims (10)

  1. 1. The distribution method for improving the target capacity of the remote sensing constellation by three-dimensional coordinate outlier fusion is characterized by comprising the following steps of: two-dimensional coordinates of the same observation target group are generated on two task satellites for executing the observation task, and three-dimensional coordinate fusion and numbering sequencing are carried out based on the two-dimensional coordinates; According to the upper limit of the capability of calculating the three-dimensional coordinates of the satellite, distributing the two-dimensional coordinates which cannot be fused to the satellite which does not execute the observation task, carrying out three-dimensional coordinate fusion on the satellite which does not execute the observation task by receiving the two-dimensional coordinates which are transmitted by the two satellites and have the same serial numbers, after the fusion is successful within the upper limit of the capability of calculating the three-dimensional coordinates, transmitting the part which exceeds the upper limit of the capability of calculating the three-dimensional coordinates to the task satellite, and so on until all the two-dimensional coordinates are fused, thereby realizing the increase of the capacity of the satellite tracking target.
  2. 2. The allocation method for improving target capacity of remote sensing constellation by three-dimensional coordinate outlier fusion according to claim 1, wherein said numbering comprises a time delay.
  3. 3. The allocation method for improving the target capacity of the remote sensing constellation by three-dimensional coordinate outlier fusion according to claim 2, wherein the time delay for performing three-dimensional coordinate fusion on the mission satellite is 0.
  4. 4. The allocation method for improving remote sensing constellation target capacity by three-dimensional coordinate and star fusion according to claim 2, wherein if three-dimensional coordinates are calculated and generated on other satellites through k times of transmission, the time delay is set to be 2k , Is the time delay of one link communication.
  5. 5. The distribution system for improving the target capacity of the remote sensing constellation by three-dimensional coordinate outlier fusion is characterized by comprising the following components: the first module is used for generating two-dimensional coordinates of the same observation target group on two task satellites for executing the observation tasks, and carrying out three-dimensional coordinate fusion and numbering sequencing based on the two-dimensional coordinates; The second module distributes the two-dimensional coordinates which are not fused to the satellites which do not execute the observation task according to the upper limit of the capability of the satellites for calculating the three-dimensional coordinates, the satellites which do not execute the observation task perform three-dimensional coordinate fusion by receiving the two-dimensional coordinates which are consistent in number and sent by the two satellites, the two-dimensional coordinates are successfully fused within the upper limit of the capability of the satellites for calculating the three-dimensional coordinates and then are returned to the task satellites, and the part exceeding the upper limit of the capability of the satellites for calculating the three-dimensional coordinates is sent to the other satellites which do not execute the observation task, and so on until all the two-dimensional coordinates are fused completely, so that the increase of the tracking target capacity of the satellites is realized.
  6. 6. The three-dimensional coordinate system of claim 5, wherein the number comprises a time delay.
  7. 7. The distribution system for improving the target capacity of the remote sensing constellation by three-dimensional coordinate outlier fusion according to claim 6, wherein the time delay for performing three-dimensional coordinate fusion on the mission satellite is 0.
  8. 8. The three-dimensional coordinate-outlier fusion remote sensing constellation target capacity enhanced distribution system according to claim 6 wherein if three-dimensional coordinates are computed on other satellites by k transmissions, then the time delay is set to 2k , Is the time delay of one link communication.
  9. 9. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor performs the steps of the method according to any one of claims 1 to 4.
  10. 10. The distribution equipment for improving the target capacity of the remote sensing constellation by three-dimensional coordinate and star fusion comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, and is characterized in that the steps of the method according to any one of claims 1-4 are realized when the processor executes the computer program.

Description

Distribution method for improving remote sensing constellation target capacity by three-dimensional coordinate and different star fusion Technical Field The invention relates to a distribution method for improving target capacity of a remote sensing constellation by three-dimensional coordinate and different star fusion, which belongs to the technical field of overall design of spacecraft systems, is suitable for remote sensing satellites of geostationary orbit networking, has a fixed observation range, does not need to interact on planets in task execution, can finish calculation force distribution of multi-star fusion according to a default rule, and improves the target capacity of the constellation. Background The remote sensing constellation comprises more than 2 remote sensing satellites, and when the positioning and tracking task of a target is executed, the observation data (two-dimensional coordinates) of the two satellites are required to be filtered and fused to generate three-dimensional coordinates. At present, when the remote sensing constellation carries out multi-target positioning tracking tasks, two satellites to be observed enter a three-dimensional coordinate fusion mode on the planet, namely a mode of 'who to observe and who to calculate'. The method is limited by the calculation capability of a single satellite, and the number of three-dimensional coordinates which can be calculated by a remote sensing satellite is far smaller than the number of two-dimensional coordinates generated by observation data, so that a large number of two-dimensional coordinates cannot be calculated in a fused mode. Therefore, when facing the multi-target task, a three-dimensional coordinate calculation scheme of the remote sensing satellite and other satellites needs to be designed, so that the target capacity of the constellation is improved. Disclosure of Invention The invention solves the technical problems of overcoming the defects of the prior art, providing a distribution method for improving the target capacity of a remote sensing constellation by three-dimensional coordinate outlier fusion, and solving the problem of limited multi-target capacity of the constellation caused by limited calculation capacity on a single satellite in the prior art. The technical scheme of the invention is that in the first aspect, the distribution method for improving the target capacity of the remote sensing constellation by three-dimensional coordinate outlier fusion comprises the following steps: two-dimensional coordinates of the same observation target group are generated on two task satellites for executing the observation task, and three-dimensional coordinate fusion and numbering sequencing are carried out based on the two-dimensional coordinates; According to the upper limit of the capability of calculating the three-dimensional coordinates of the satellite, distributing the two-dimensional coordinates which cannot be fused to the satellite which does not execute the observation task, carrying out three-dimensional coordinate fusion on the satellite which does not execute the observation task by receiving the two-dimensional coordinates which are transmitted by the two satellites and have the same serial numbers, after the fusion is successful within the upper limit of the capability of calculating the three-dimensional coordinates, transmitting the part which exceeds the upper limit of the capability of calculating the three-dimensional coordinates to the task satellite, and so on until all the two-dimensional coordinates are fused, thereby realizing the increase of the capacity of the satellite tracking target. Further, the number includes a delay. Further, the time delay of three-dimensional coordinate fusion on the task satellite is 0. Further, if the three-dimensional coordinates are calculated and generated on other satellites through k times of transmission, the time delay is set to be 2k,Is the time delay of one link communication. In a second aspect, a distribution system for improving target capacity of a remote sensing constellation by three-dimensional coordinate outlier fusion is characterized by comprising: the first module is used for generating two-dimensional coordinates of the same observation target group on two task satellites for executing the observation tasks, and carrying out three-dimensional coordinate fusion and numbering sequencing based on the two-dimensional coordinates; The second module distributes the two-dimensional coordinates which are not fused to the satellites which do not execute the observation task according to the upper limit of the capability of the satellites for calculating the three-dimensional coordinates, the satellites which do not execute the observation task perform three-dimensional coordinate fusion by receiving the two-dimensional coordinates which are consistent in number and sent by the two satellites, the two-dimensional coordinates are successfully fused