宋小勇, 贾小林, 毛悦. 基于星间测距的两步滤波时间同步方法[J]. 武汉大学学报 ( 信息科学版), 2009, 34(11): 1297-1300.
引用本文: 宋小勇, 贾小林, 毛悦. 基于星间测距的两步滤波时间同步方法[J]. 武汉大学学报 ( 信息科学版), 2009, 34(11): 1297-1300.
SONG Xiaoyong, JIA Xiaolin, MAO Yue. Two Steps Time Synchronizing Method for AutoNav with Crosslink Ranging Measurement[J]. Geomatics and Information Science of Wuhan University, 2009, 34(11): 1297-1300.
Citation: SONG Xiaoyong, JIA Xiaolin, MAO Yue. Two Steps Time Synchronizing Method for AutoNav with Crosslink Ranging Measurement[J]. Geomatics and Information Science of Wuhan University, 2009, 34(11): 1297-1300.

基于星间测距的两步滤波时间同步方法

Two Steps Time Synchronizing Method for AutoNav with Crosslink Ranging Measurement

  • 摘要: 基于星间距离测量的自主定轨对应于不可观测性问题,如果引入一个基准,虽然可保持卫星之间的相对位置关系,但是容易出现星座旋转误差。星座旋转的根本原因在于星间观测(测距和测速)无法反映轨道升交点赤经的系统误差。本文对卫星自主定轨的旋转误差以及控制方法进行了讨论和分析。

     

    Abstract: To maintain the positioning and navigation function of our navigation system,the crosslink ranging measurement is used to calculate the ephemeris and clock error. The simulating method of clock error is presented. A two-step time synchronizing algorithm is introduced. The validation of the algorithm was verified by the simulating data. The results show that the two-step algorithm is slightly better than one-step algorithm.

     

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