摘要
针对区域星座自主导航的任务需求,提出了一种基于相对钟差估计的星座自主时间同步方法.介绍了该方法的实现原理,建立了系统状态模型和系统测量方程,并设计了适用于星座时间同步的Kalman滤波算法.仿真结果表明,该方法能够实现星座卫星的时间同步.
A time synchronization method for regional constellation satellites via estimating the relative clock errors is presented in this paper. The realization principle of this method is introduced, and the sys-tem state and measurement equations of clocks are established. Finally, a Kalman filtering algorithm ap-plicable to time synchronization of constellation is designed. Simulation results show that this method is feasible.
出处
《空间控制技术与应用》
2013年第4期18-22,共5页
Aerospace Control and Application
基金
国家自然科学基金资助项目(61074103)
关键词
自主导航
自主时间同步
相对钟差
KALMAN滤波
区域星座
autonomous navigation
time synchronization
relative clock errors
Kalman filtering
regional constellation
