电子学报2017，Vol.45Issue(8)：1818-1826,9.DOI:10.3969/j.issn.0372-2112.2017.08.003
建立GNSS时间基准的构想和思考
Concepts and Thoughts of Forming a GNSS Time Scale
伍贻威 1朱祥维 2龚航 1孙广富 1欧钢1
作者信息
- 1. 国防科技大学电子科学与工程学院,湖南长沙 410073
- 2. 北京卫星导航中心,北京 100005
- 折叠
摘要
Abstract
The paper describes our thoughts of forming the system time of a Global Navigation Satellite System (GNSS),which is denoted by GNSST,and the time references TA(k) and UTC(k) of a timing laboratory where k characterizes the specific national laboratory.We also describe the roles of time scale algorithms,clock steering algorithms,and clock prediction algorithms in forming these time scales.We take Chinese Beidou satellite navigation system time (denoted BDT) as an example,and propose a twice steering algorithm to form BDT.We take the national time service center (NTSC) of China as an example to describe the idea,method,principle and theory of forming a TA(k) and a UTC(k).Then we analyze the impact of TA(NTSC) on UTC(NTSC),and the impact of UTC(NTSC) on the time synchronization precision and frequency stability performances of BDT if we steered BDT to UTC(NTSC).We also propose an idea of steering BDT to a paper time scale formed from UTC(NTSC) and UTC(BSNC).The performance is theoretically analyzed.关键词
GNSS/守时实验室/时间基准/TA(k)/UTC(k)/时间同步精度,频率稳定度Key words
GNSS/timing laboratory/time reference/TA(k)/UTC(k)/time synchronization precision/frequency stability分类
信息技术与安全科学引用本文复制引用
伍贻威,朱祥维,龚航,孙广富,欧钢..建立GNSS时间基准的构想和思考[J].电子学报,2017,45(8):1818-1826,9.
