测量带有常值偏差时卫星自主定轨系统可观性分析  

Observability Analysis for Biased Satellites Autonomous Orbit Determination Systems

作　　者：张春青[1] 刘良栋[1] 李勇[2] 

机构地区：[1]北京控制工程研究所,北京100080 [2]中国空间技术研究院研究发展中心,北京100094

出　　处：《中国空间科学技术》2006年第6期1-7,13,共8页Chinese Space Science and Technology

基　　金：国家自然科学基金资助项目(编号:90405017)

摘　　要：考虑测量带有常值偏差时卫星自主定轨系统的状态观测和常值偏差估计问题,将观测常值偏差扩增为状态后进行卡尔曼滤波是解决这一问题的一个途径。为使卡尔曼滤波稳定,就必须分析系统的随机可观测性。文章利用线性时变系统的可观性理论对测量带有常值偏差时卫星自主定轨系统的可观性进行了分析,数值仿真结果显示了所得理论的正确性。Concerning with the autonomous orbit determination for satellites with constant in the measurements of navigation sensors, it is a common approach to augment the system states with biased states and use Kalman filter, if the augmented system is completely observable. The observability of the proposed system was discussed using standard results of linear time-variant systems theory, and two very useful analysis results were presented. The results was demonstrated by numerical simulation.

关 键 词：自主控制 误差估计 轨道参数动力学 模型 人造卫星 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]