Multiple line-of-sight angles-only relative navigation by multiple collaborative space robots

被引：0
|
作者：
Han F. [1 ,2 ]
Liu F. [1 ,2 ]
Wang Z. [1 ,2 ]
Du X. [3 ]
Liu S. [1 ,2 ]
Liu C. [1 ,2 ]
机构：
[1] Shanghai Aerospace Control Technology Institute, Shanghai
[2] Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai
[3] Shanghai Academy of Spaceflight Technology, Shanghai
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2021年 / 42卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Angles-only; Configuration; Multiple line-of-sight collaboration; Observability; Relative navigation; Space robots;
D O I：
10.7527/S1000-6893.2020.24174
中图分类号：
学科分类号：
摘要：
This paper focuses on multiple Line-of-Sight (LOS) angles-only relative navigation of multiple collaborative space robots for non-cooperative targets. To improve the relative navigation performance by fusing multi-LOS information, we propose a multi-LOS relative navigation method based on observability optimization. A relative dynamic model and a state equation between the center robot and the non-cooperative target as well as the observation equation of the multi-robot LOS are firstly developed, and the multi-LOS angles-only relative navigation system is then studied. After that, the angle condition of the multi-LOS with optimal observability is obtained, and a method for the observation configuration optimization of multiple space robots is proposed, considering the observability and long-term natural maintenance. Finally, the simulation results show that the method can significantly improve the range state observability and estimation performance, therefore having good application prospect in space missions. © 2021, Beihang University Aerospace Knowledge Press. All right reserved.
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