一种北斗卫星精密定轨方法

摘要

Based on BDS/GPS observation data,a method of precise orbit determination of BeiDou satellites was studied on.The experiment of precise orbit determination was processed by PANDA using data from BeiDou Experiment Tracking Stations(BETS).The results showed that the orbit precision of BeiDou satellites could be better than 10 cm in the radial direction,and three-dimensional orbit precision of GEO could be better than 5 m,and that of IGSO and MEO could be better than 0.5 m.But the bias would appear in the along direction of GEO.%利用BDS/GPS双模观测数据,研究了高精度北斗卫星精密定轨的实现方法,使用PANDA软件,结合“北斗卫星观测实验网”的实测数据,进行了精密定轨实验,结果表明:北斗卫星径向定轨精度能够达到优于10 cm的水平；其中,GEO三维定轨精度能够优于5m,但沿迹方向存在系统偏差,IGSO/MEO三维定轨精度优于0.5 m.