卫星双向时间频率传递系统差校准方法  

Systematic Errors Calibration Method Based on Two-way Satellite Time and Frequency Transfer

作　　者：王国永[1] 秦晓伟[1] 孙云峰[1] 何冬[1] WANG Guo- yong QIN Xiao- wei SUN Yun- feng HE Dong(China Academy of Space Technology（ Xi ’ an）,Xi ’ an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2017年第2期19-24,共6页Space Electronic Technology

摘　　要：卫星双向时间频率传递(TWSTFT)是目前最准确的远距离时间频率传递技术之一,其时间传递不确定度可达1 ns。由于设备老化等原因,设备时延会发生变化,因此需要定期对TWSTFT固定地面站进行校准,测量出系统差。目前系统差校准的方差主要有模拟器法、单移动站法、双移动站法等。对这几种校准方法进行了研究,总结了其优缺点和应用场景,可为TWSTFT固定地面站之间的系统差校准提供参考。So far two-way satellite time and frequency transfer（TWSTFT）has been one of the most accurate remote time transfer technology.Time transfer uncertainty can attain 1 ns. Due to equipment aging and other reasons, equipment delay is variable.So it is essential to regular calibrate TWSTFT fixed ground station for measuring systematic errors.So far,the calibra-tion methods mainly include the satellite simulator method,the single mobile station method and the double mobile stations method,and so on.Those methods were researched in this paper,in addition merits and drawbacks and applying scene were summarized.Those methods can provide reference for calibrating systematic errors among TWSTFT fixed ground stations.

关 键 词：卫星双向时间频率传递 系统差校准 单移动站法 双移动站法 

分 类 号：V474[航空宇航科学与技术—飞行器设计]