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Satellite task planning method with minimum completion time under condition of sufficient resources

A technology of mission planning and completion time, applied in resources, control of finding targets, instruments, etc., can solve problems such as satellite difficult-to-observe areas

Pending Publication Date: 2020-02-18
北京市遥感信息研究所 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A satellite transit can only photograph a strip area of ​​limited length and width. If the area to be observed is large, it is difficult for the satellite to completely observe the entire area in one transit.

Method used

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  • Satellite task planning method with minimum completion time under condition of sufficient resources
  • Satellite task planning method with minimum completion time under condition of sufficient resources
  • Satellite task planning method with minimum completion time under condition of sufficient resources

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Embodiment Construction

[0080] In this embodiment, from the perspective of a two-dimensional plane space, the observation direction can be divided into two categories, namely, tilting to the lower right and tilting to the lower left, such as Figure 2a with Figure 2b As shown, the symbol "\" and the symbol " / " can be used as a line analogy. The methods of constructing coverage patterns under two different coverage directions are very similar and have symmetric characteristics. Therefore, in order to simplify the description, we will only take the first type of coverage opportunity tilted to the lower right as an example for detailed description.

[0081] Such as figure 1 As shown, a satellite mission planning method with a minimum completion time under sufficient resources is characterized by being applied to a rectangular area R to be observed and a set of coverage opportunities of n imaging satellites S={s 1 , S 2 ,...,S i ,...S n } In the mission planning scenario; among them, the area to be observed...

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Abstract

The invention discloses a satellite task planning method with the minimum completion time under the condition of sufficient resources, and the method comprises the steps: 1, carrying out the discretization representation of a to-be-observed region through a grid, and enabling an original coverage problem of a larger region to be converted into a coverage problem of the grid; 2, obtaining a feasible solution on the coarse-grained grid and then cutting down the feasible solution, and finding a better feasible solution on the fine-grained grid; 3, repeatedly refining the grid in a nesting manner,and proposing a method for constructing a near coverage mode on the new grid to prevent all coverage modes from being regenerated each time; and 4, combining grid refinement, construction of a near coverage mode and a dynamic greedy-based heuristic algorithm, and performing multiple iterations to obtain a better feasible solution. According to the method, the satellite task arrangement result taking the minimum completion time as the purpose can be quickly obtained, so that the satellite can finish the observation task as early as possible under sufficient observation resources, the time required for executing the task is shortened, and the working efficiency of the satellite is improved.

Description

Technical field [0001] The invention belongs to the technical field of satellite mission planning, and specifically is a satellite mission planning method with a minimum completion time under the condition of sufficient resources. Background technique [0002] Satellites are machines made by humans to be launched into space, flying around the earth in a certain orbit. One of its main functions is to observe land, ocean, atmosphere, etc. through spaceborne sensors (such as visible light cameras, multispectral cameras). Observation requirements are put forward by users from various fields and departments, and are summarized in the satellite ground control center. The control center comprehensively formulates the imaging coverage plan of each satellite according to the observation demand and the use of satellite resources, and generates measurement and control instructions. The measurement and control station uploads to the satellite, and the satellite takes the corresponding actio...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06F30/18G05D1/12
CPCG06Q10/06315G05D1/12Y02D30/70
Inventor 徐崇彦杨斌汤航胡笑旋刘光辉赵玉春伍艺李子杰靳鹏史潇骁朱外明
Owner 北京市遥感信息研究所
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