北斗亚欧共视时间比对试验  

Experiment of BeiDou Asia-Euro common view time transfer

作　　者：武文俊[1,2,3] 广伟 张继海 高喆[1,2] 董绍武 张首刚[1,2,3] WU Wen-jun;GUANG Wei;ZHANG Ji-hai;GAO Zhe;DONG Shao-wu;ZHANG Shou-gang(National Time Service Center,Chinese Academy of Sciences,Xi＇an 710600,China;Key Laboratory of Time and Frequency Primary Standards,Chinese Academy of Sciences,Xi＇an 710600,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 101048,China)

机构地区：[1]中国科学院国家授时中心,西安710600 [2]中国科学院时间频率基准重点实验室,西安710600 [3]中国科学院大学天文与空间科学学院,北京101048

出　　处：《时间频率学报》2018年第3期200-205,共6页Journal of Time and Frequency

基　　金：国家自然科学基金资助项目(11703030;11473029)

摘　　要：远距离时间比对是协调世界时(UTC)和国际原子时(TAI)产生过程中的重要环节。在UTC/TAI计算时,现主要使用如下国际时间比对手段:基于通信卫星的双向时间比对(TWSTFT)、基于GPS的全视和精密单点定位以及GLONASS的共视时间比对。北斗卫星导航系统是我国独立自主开发的全球卫星导航系统。现虽已在亚太地区实现了很好的卫星覆盖,但在欧美地区可视卫星数目仍然有限。尽管如此,利用4颗左右的亚欧大陆共同可视北斗卫星,采用北斗共视法获得了亚欧大陆间2～4ns的长基线国际时间比对结果。该次试验为北斗参与UTC/TAI的计算提供了有力的技术支持,对于北斗拓展应用具有重要的意义。The remote time comparison is one of the key points in the generation of UTC and TAI. The two-way satellite time and frequency transfer, GPS and GLONASS common view, GPS all in view and GPS precise point positioning time comparisons are used in the realization of UTC/TAI. The Beidou satellite navigation system is a global navigation satellite system developed independently by our country,and it can provide the positioning, velocity and timing service for Asia-Pacific region at present. Even that, the BeiDou common view experiment was competed by about 4 BeiDou satellites between European and Asian time laboratories,the standard deviation is about 2.5 ns. This experiment provides technical support for the BeiDou＇s participation in UTC/TAI computation.

关 键 词：协调世界时 时间比对 北斗 共视 

分 类 号：P228.4[天文地球—大地测量学与测量工程]