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Observability Analysis of Autonomous Navigation System of Interplanetary Spacecraft

机译:星际航天器自主导航系统的可观测性分析

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In this paper, an autonomous navigation scheme for interplanetary spacecraft based on the Sun line-of-sight vector measurement is proposed. In order to prove that the directional data alone can completely determine the spacecraft orbit, an analytical observability analysis is implemented through the partial derivative of the measurement equation. Then, a numerical local observability analysis is derived from the Lie derivative. Also presented is a global observability analysis by introducing the condition number of the measurement matrix. Finally, simulation results demonstrate the validity of the proposed navigation algorithm.
机译:本文提出了一种基于太阳视距矢量测量的行星际航天器自主导航方案。为了证明方向数据本身可以完全确定航天器的轨道,通过测量方程的偏导数进行了可观察性分析。然后,从李导数推导了数值局部可观性分析。还介绍了通过引入测量矩阵的条件数进行的全局可观察性分析。最后,仿真结果证明了所提导航算法的有效性。

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