卫星双向时间传递中的卫星运动误差研究  

Study on Satellite Motion Error of TWSTFT

作　　者：任艳阳[1] 周必磊[2] 方宝东 尤伟[2] 

机构地区：[1]北京理工大学信息与电子学院,北京100081 [2]上海卫星工程研究所,上海200240

出　　处：《上海航天》2013年第6期57-61,共5页Aerospace Shanghai

摘　　要：对转发卫星运动引入误差进行了研究。推导了卫星双向时间传递中的卫星运动误差模型,用两行轨道根数(TLE)对目前在轨的多颗地球同步轨道卫星(GEO)的运动进行计算。仿真结果显示:GEO卫星的受摄运动导致的卫星运动误差达数百皮秒,卫星运动规律呈现周日特性,导致1d中不同时刻进行的卫星双向时间传递操作产生不同大小的卫星运动误差。The satellite motion error of two-way satellite time and frequency transfer （TWSTFT） which came from the propagation path asymmetry of two-way signals, and the motion of satellite might cause the asymmetry was studied in this paper. The satellite motion error formula of TWSTFT was derived. Some GEO satellites motion from the two-line-element （TLE） was calculated. The results showed that the time transfer error caused by satellite motion could reach hundreds of nanoseconds. Because of the daily cycle feature of the GEO satellites＇ motion, the time transfer error was not a constant within a day.

关 键 词：卫星运动误差 卫星双向时间传递 两行轨道根数 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]