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。
There often encounter ill-conditioned problem of navigation constellation for auton- omous orbit determination by using the inter-satellite link, so orbit determination of constel- lation 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.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2013年第4期399-402,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(41174005
40974009
41174025)
郑州市科技计划攻关资助项目(0910SGYG21198)
中国卫星导航学术年会青年优秀论文获奖者资助课题
信息工程大学博士研究生学位论文创新基金资助项目
关键词
自主定轨
星座漂移
EKF算法
岭型EKF算法
岭参数
autonomous orbit determination
constellation drift
EKF algorithm
ridge-typeEKF algorithm
ridge parameter
