Infrared LEO constellation design by GDE 3 algorithm
Wang Chunming1, Chen Xi2, Deng Yong2*
1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China;
2. National Key Laboratory of Integrated Information System Technology, Chinese Academy of Sciences, Beijing 100190, China
Some guidelines about the design of infrared LEO(low earth orbit) constellation were analyzed and presented which involved location precision, space coverage and the constellation cost. And some indexes were defined to measure the performance of the constellation, such as the average efficient location precision, the ��N�� geometric coverage percentage and the ��N�� valid coverage percentage. Certain indexes could be used as some objective functions. The GDE 3 algorithm proposed could design and optimize the constellation. This method was based on Pareto optimal and could obtain a set of optimal solutions, thus it was adapted to solve the multi-object optimization problems. The simulation experiment was made by establishing the constellation model and designing the objective functions. Finally a constellation was selected from the results via a kind of multi-attributes decision. Compared with other constellation, much better performance was observed.
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