中国空间科学技术

中国空间科学技术

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提高卫星自主导航精度的滤波算法和仿真

张春青;刘良栋;李勇;   

  1. 北京控制工程研究所,北京控制工程研究所,中国空间技术研究院研究发展中心 北京100080,北京100080,北京100094
  • 发布日期:2006-06-25

Filtering Algorithm and Simulation for Improving the Precision of the Satellites Autonomous Navigation

Zhang Chunqing~1 Liu Liangdong~1 Li Yong~2(1 Beijing Institute of Control Engineering,Beijing 100080)(2 Research & Development Center,China Academy of Space Technology,Beijing 100094)   

  • Online:2006-06-25

被引次数

3

摘要： 如何实时准确地对系统误差进行估计和校准提高基于“地-日-月”测量的卫星自主导航精度的一个重要途径。针对这一问题,将系统误差作为新增的状态向量,设计了轨道参数状态与系统误差状态解耦估计的两步滤波算法,该算法在估计轨道参数的同时校准系统误差,数学仿真结果表明,采用文章所提出的滤波算法可以将自主导航的位置精度从10km(3σ)量级提高到300m(3σ)左右。

关键词: 自主式导航, 精度, 滤波, 算法, 系统仿真, 人造卫星

Abstract: How to precisely estimate and calibrate the systematic errors in the measurements is a key problem for improving the performance of autonomous navigation for satellites using(measurements) of the Earth,the Sun and the Moon.A two-step filter algorithm is designed and(applied) to estimate orbital parameters and identify the measurement biases simultaneously.(Simulation) results show that the 3-σ accuracies for position can be improved to the order of(300m) from the order of 10km using the filter algorithm presented.