引用本文: 韩松辉, 归庆明, 李建文, 杜兰. 分布式自主定轨的岭型EKF算法[J]. 武汉大学学报 ( 信息科学版), 2013, 38(4): 399-402.
HAN Songhui, GUI Qingming, LI Jianwen, DU lan. Ridge-Type EKF of Distributed Autonomous Orbit Determination[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 399-402.
 Citation: HAN Songhui, GUI Qingming, LI Jianwen, DU lan. Ridge-Type EKF of Distributed Autonomous Orbit Determination[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 399-402.

## Ridge-Type EKF of Distributed Autonomous Orbit Determination

• 摘要: 针对分布式自主定轨模式，在分析病态性问题产生原因的基础上，将岭估计与EKF算法相结合，提出了岭型EKF算法，并给出了岭参数的具体确定方法。利用STK仿真Walker24/3/1星座并进行分布式自主定轨，结果表明岭型EKF算法是有效的。

Abstract: There often encounter ill-conditioned problem of navigation constellation for autonomous orbit determination by using the inter-satellite link, so orbit determination of constellation can not be achieved directly using EKF algorithm. For distributed autonomous orbit determination model, the divergent reasons of EKF algorithm are analyzed through the thought of biased estimation. Thus the ridge-type EKF algorithm is first proposed by using the combination of ridge estimate and EKF algorithm, and a specific method is given for the determination of ridge parameter. Finally, Walker24/3/1 constellation is simulated by STK and distributed autonomous orbit determination is implemented. The validity of ridge-type EKF algorithm is verified by the results of simulation example.

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