A trajectory planning based on characteristic parameter fitting for multi-ground targets of the ground tracks of two satellites

doi:10.7523/j.ucas.2022.070

Abstract

Abstract: In order to solve the problems related to the ground tracks of satellites for Earth observation with multiple orbital maneuvering capabilities, multi-detection targets, and multi-detector coordination, a fast calculation method of the ground tracks of satellites based on characteristic parameter fitting is proposed. An optimization model is established based on the database about the splicing method of the ground tracks of satellites. Firstly, the characteristic parameters describing the ground tracks of satellites are analyzed and refined, and polynomials are used to fit these characteristic parameters to achieve fast calculation. Then, an observation code database is established according to the detection target, and the database is further organized into a trajectory database. Finally, an optimization model based on the trajectory database is established to solve all problems on the ground tracks of satellites. The simulation of a fast full coverage task for a fixed target in CTOC11 (the 11th China Trajectory Optimization Competition) was completed within 19.19 days. The results show that the design method and scheme adopted in this paper can be used for the design of ground tracks of satellites in various near-circular orbits.

Key words: Earth observation, the ground tracks of satellites, characteristic parameter fitting, database, trajectory planning, CTOC

CLC Number:

V412.4

HUANG Xiongwei, WANG Shuquan, ZHANG Yang, HE Shengmao. A trajectory planning based on characteristic parameter fitting for multi-ground targets of the ground tracks of two satellites[J]. Journal of University of Chinese Academy of Sciences, 2024, 41(5): 665-676.

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