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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (2): 324145-324145.doi: 10.7527/S1000-6893.2020.24145

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Distributed autonomous relative navigation method for spacecraft formation near solar L2

YE Zipeng, ZHOU Qingrui, WANG Hui   

  1. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China
  • Received:2020-04-27 Revised:2020-05-12 Published:2020-06-24
  • Supported by:
    National Key R&D Program of China (2018YFA0703800)

Abstract: In order to achieve high precision relative navigation of spacecraft formation in solar L2 orbit, a distributed autonomous navigation method is proposed in this paper. Firstly, the local measurement topology is formed by information interaction such that each satellite only estimates the states based on the measurement between neighbors, thereby reducing the states dimension and calculation amount. Then, the information fusion is conducted according to the results of mutual estimation to improve the estimation accuracy. On this basis, the main factors affecting the final estimation error are analyzed, and the approximation formula is proposed. Numerical simulation shows the accuracy can achieve cm order of position estimation and mm/s order of velocity estimation. The simulation results verify the effectiveness of the method and prove that the method can be applied in engineering.

Key words: spacecraft formation, relative navigation, measurement topology, information fusion, attitude of spacecraft

CLC Number: