摘要
介绍了利用跟踪中继卫星系统(TDRSS)信息的单向多普勒定轨技术。分析了单向多普勒测轨的基本原理和系统组成,采用扩展卡尔曼滤波(EKF)法,推导用于自主定轨算法的卫星轨道测量状态及观测方程,讨论了影响滤波精度的状态变量和动力学模型精度等多种误差源及其该方法能达到的测轨精度。
The method of onboard orbit determination using one-way Doppler data derived from tracking and data relay satellite system （TDRSS） was introduced in this paper. The principle of orbit determination of one-way Doppler orbit determination and the system composition were analyzed. The state equation and observation equation of satellite orbit measurement that was used in autonomous orbit determination algorithm was derived through extended Kalman filter. The several error sources, such as state variable, dynamic model and others, that affected filter accuracy and accuracy of orbit determination by this method were discussed.
出处
《上海航天》
北大核心
2005年第6期44-47,共4页
Aerospace Shanghai
关键词
自主定轨
中继卫星系统
单向多普勒定轨
扩展卡尔曼滤波
精度
Autonomous orbit determination
Tracking and data relay satellite systems One-way Doppler orbit determinations Extended Kalman filter
Accuracy
