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Satellite-ground joint operation method for autonomous planning of constellation observation tasks

A technology for mission planning and operation methods, applied in data processing applications, instruments, calculations, etc., and can solve problems such as data delay, weak satellite computing capabilities, and limited ground measurement and control resources.

Active Publication Date: 2020-10-30
HARBIN INST OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the existing constellation observation task planning mostly relies on the ground centralized constellation collaborative mission planning, but the ground centralized constellation collaborative mission planning is prone to data delay, slow response rate in the face of unexpected tasks, ground measurement and control Limited resources; and the problem of weak on-board computing power of existing satellites, and propose a satellite-ground joint operation method for autonomous planning of constellation observation tasks

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  • Satellite-ground joint operation method for autonomous planning of constellation observation tasks
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  • Satellite-ground joint operation method for autonomous planning of constellation observation tasks

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specific Embodiment approach 1

[0056] Specific implementation mode 1: The specific process of the satellite-ground joint operation method for autonomous planning of constellation observation tasks in this implementation mode is as follows: Figure 1-5 shown;

[0057] Introduction to the process of the joint operation mechanism of the satellite and the ground

[0058] In the initial stage, an initial mission plan is generated for each satellite through unified ground centralized planning. After the initial mission of each satellite starts to execute, under normal circumstances, each satellite performs the expected observation mission according to the established initial mission plan, and observes the area (satellite Observation target, such as satellite observation area); when there is an unexpected observation task, the satellite independently judges whether it can obtain ground communication support at this time:

[0059] If there is an available satellite-ground link, the satellite will receive ground co...

specific Embodiment approach 2

[0083] Specific implementation mode two: combination Figure 12 This embodiment is described. The difference between this embodiment and the first embodiment is that the re-planning of the ground centralized constellation dynamic collaborative task in the step 6 adopts a genetic algorithm based on real number coding, and the specific process is:

[0084] When using genetic algorithm for satellite mission planning, binary coding is often used. That is, each bit of the chromosome represents the time window corresponding to a certain target, and its value is 0 or 1, which represents whether this time window is selected to arrange observation tasks, and the length of the chromosome is the visible time window of all targets for all satellites quantity. However, considering that when the planning interval is long in practical applications, the number of visible time windows of the target is large, the chromosome generated by binary coding is too long, and each bit of the chromosome...

specific Embodiment approach 3

[0101] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the fitness value of each individual calculated in step 63 is obtained by optimizing the objective function;

[0102] where the optimization objective is Q 1 , Q 2 or Q 3 ;

[0103]

[0104] V i is the revenue value of the satellite observation target (the revenue value of the satellite observation target is related to the importance and priority of the target, and the higher the importance and priority of the target, the larger the revenue value), x i Whether the observation target is selected for observation, if it is selected for observation x i = 1, if not selected to observe x i = 0, Q 1 Optimize the objective function for the first type;

[0105]

[0106] e i is the cost of the observation target (the battery energy consumed by the observation target), Q 2 Optimize the objective function for the second type;

[0107] the y i Whether the observation arrangement for...

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Abstract

The invention relates to an autonomous-scheduling satellite-ground combined operation method facing satellite constellation observation tasks, and relates to a satellite-ground combined operation method. The autonomous-scheduling satellite-ground combined operation method facing satellite constellation observation tasks aims at solving the problems that current satellite constellation observationtask scheduling mostly depends on ground centralized satellite constellation cooperation task scheduling while ground centralized satellite constellation cooperation task scheduling is easy to encounter data delay, is slow in the response speed of non-expected tasks, and is limited in the ground measurement and control resources, and a current satellite is weak in the on-satellite computing capability. The autonomous-scheduling satellite-ground combined operation method facing satellite constellation observation tasks includes the steps: 1) setting a ground cooperation task, and uploading theground cooperation task to a satellite to execute; 2) determining whether an expected task exists, turning to the step 5 if an expected task exists, and turning to the step 3 if not; 3) determining whether the next task scheduling time achieves, turning to the step 4 if the next task scheduling time achieves, and turning to the step 2 if not; 4) starting ground scheduling, and turning to the step2; 5) determining whether communicating with the ground, if so, turning to the step 6, and if not, turning to the step 7; 6) performing ground re-scheduling, and turning to the step 2; 7) performing satellite constellation re-scheduling, and turning to the step 8; 8) determining whether being able to communicate with ground, if so, turning to the step 6, and if not, turning to the step 9; and 9) determining whether arriving at ta-end, if so, turning to the step 7, and if not, turning to the step 8. The autonomous-scheduling satellite-ground combined operation method facing satellite constellation observation tasks is used for the satellite constellation observation field.

Description

technical field [0001] The invention relates to a satellite-earth joint operation method. Background technique [0002] Remote sensing satellites are an important way and means to obtain ground sensitive target information, and all major space agencies in the world have listed them as key research and construction objects. Among them, the planning and scheduling technology of observation tasks is one of the core technologies to support effective observation of remote sensing satellites. At present, satellite remote sensing technology is gradually developing from single-satellite observation to multi-satellite observation, and from extensive management to refined management. This puts forward increasingly high requirements for the real-time support capability of satellite-ground measurement and control communication under the traditional ground control satellite operation mode. [0003] However, due to the orbital characteristics of satellites and the constraints on the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06
CPCG06Q10/06312
Inventor 李玉庆张超陈金勇冯小恩江飞龙陈韬亦雷明佳董诗音唐梦莹王日新徐敏强
Owner HARBIN INST OF TECH