Satellite task planning method with minimum observation cost under condition of sufficient resources
A mission planning, sufficient technology, applied in the field of satellite mission planning, can solve problems such as rational utilization of unfavorable resources, rising costs, and high cost of satellite observation
Active Publication Date: 2020-01-21
HEFEI UNIV OF TECH
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Problems solved by technology
In practice, the sub-satellite point trajectories of each satellite are not necessarily parallel, so it may cause overlap between imaging strips
Due to the high cost of satellite observation, if it is not properly arranged, it may cause a large amount of overlap between the strips, causing some areas to be repeatedly observed, resulting in an increase in the cost of completing the observation task and unnecessary waste. The situation is very unfavorable for the rational use of resources
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[0094] In this embodiment, from the point of view of the two-dimensional plane space, the coverage opportunities can be generally divided into two types in the observation direction, which are downward sloping to the right and downward slanting to the left, for example Figure 2a and Figure 2b As shown, the symbol "\" and the symbol " / " can be used for analogy. The methods of constructing coverage patterns under two different coverage directions are very similar and have the characteristics of symmetry. Therefore, in order to simplify the description, we only take the first kind of coverage opportunity that slopes down to the right as an example for detailed description below.
[0095] like figure 1 As shown, a satellite mission planning method with minimum observation cost in the case of sufficient resources is applied to a coverage opportunity set S={s 1 ,s 2 ,...,s i ,...s n} in the mission planning scenario; among them, the area to be observed R is relatively large ...
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The invention discloses a satellite task planning method with the minimum observation cost 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 an original coverage problem of a larger region being 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 nested manner, and proposing a method for constructing an adjacent 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 with the minimum observation cost as the purpose can be rapidly obtained, so that the satellite can complete the observation task with the cost as low as possible under the condition of sufficient observation resources, and unnecessary resource waste is reduced.
Description
technical field [0001] The invention belongs to the technical field of satellite mission planning, and specifically relates to a satellite mission planning method with minimum observation cost under the condition of sufficient resources. Background technique [0002] A satellite is a machine manufactured by humans and launched into space, which orbits 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 needs are put forward by users from various fields and departments, and are summarized in the satellite ground control center. According to the observation needs and combined with the use of satellite resources, the control center formulates comprehensive imaging coverage plans for each satellite, and generates measurement and control commands. The measurement and control station uploads to the satellite, and the satellite takes corres...
Claims
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IPC IPC(8): G06Q10/06
CPCG06Q10/06312
Inventor 胡笑旋伍艺王执龙靳鹏王国强高天旸朱外明王云辉
Owner HEFEI UNIV OF TECH