系统工程与电子技术 ›› 2025, Vol. 47 ›› Issue (11): 3792-3801.doi: 10.12305/j.issn.1001-506X.2025.11.26

• 制导、导航与控制 • 上一篇    

卫星导航系统时之间偏差监测与评估

张虹1,2,*, 张继海1,2, 袁海波1,2,3, 董绍武1,2,3,4   

  1. 1. 中国科学院国家授时中心,陕西 西安 710600
    2. 中国科学院时间基准及应用重点实验室,陕西 西安 710600
    3. 中国科学院大学材料科学与光电技术学院,北京 100049
    4. 中国科学院大学天文与空间科学学院,北京 100049
  • 收稿日期:2024-09-12 出版日期:2025-11-25 发布日期:2025-12-08
  • 通讯作者: 张虹
  • 作者简介:张继海(1988—),男,助理研究员,博士,主要研究方向为高精度时间传递技术
    袁海波(1974—),男,研究员,博士,主要研究方向为守时技术、时间传递技术
    董绍武(1962—),男,研究员,博士,主要研究方向为时间保持技术
  • 基金资助:
    自主立项项目(2023YFB3906500)资助课题

Monitoring and evaluation of time offsets between satellite navigation systems

Hong ZHANG1,2,*, Jihai ZHANG1,2, Haibo YUAN1,2,3, Shaowu DONG1,2,3,4   

  1. 1. National Time Service Center,Chinese Academy of Sciences,Xi’an 710600,China
    2. Key Laboratory of Time Reference and Applications,Chinese Academy of Sciences,Xi’an 710600,China
    3. College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China
    4. School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China
  • Received:2024-09-12 Online:2025-11-25 Published:2025-12-08
  • Contact: Hong ZHANG

摘要:

为了使用国际权度局(Bureau International des Poids et Mesures,BIPM)播发的导航系统时间与协调世界时(coordinated universal time,UTC)偏差信息评估全球卫星导航系统(global navigation satellite system, GNSS)间时差监测结果,本文利用各GNSS播发的系统时间的溯源偏差数据和以UTC为本地物理实现的GNSS监测数据,基于单站时差监测技术对比分析系统间时差监测结果与系统播发的系统间时差信息、各系统时间与UTC之间的偏差信息,实现GNSS系统间时差的实时监测与评估。对比BIPM播发的GNSS时间与UTC偏差信息可见,GNSS电文播发的系统时间偏差与BIPM发布结果之间的最大偏差低于6 ns,残差标准差低于3 ns,GNSS电文播发的UTC偏差与BIPM发布结果之间的偏差保持在6 ns以内,残差标准差优于2.5 ns,满足了大部分用户对导航系统互操作需求。

关键词: 全球卫星导航系统, 时间互操作, 时间偏差监测与评估

Abstract:

To evaluate the GNSS inter-system time offset monitoring results using global navigation satellite system (GNSS) time and coordinated universal time (UTC) offsets information, which published by the Bureau International des Poids et Mesures (BIPM), the traceability offsets of system time broadcast by each GNSS and the GNSS monitoring data referenced to local realization of UTC are utilized. Based on the single-station time offset monitoring technique, inter-system time offset monitoring results are comparatively analyzed with broadcast inter-system time offset information and the offset information between each system time and UTC, to achieve real-time monitoring and evaluation of GNSS inter-system time offsets. Comparing with GNSS time and UTC offsets information, which published by the BIPM, the results indicate that the maximum deviation between the system time offset broadcast in GNSS messages and BIPM’s published data is better than 6 ns, with a residual standard deviation below 3 ns. Additionally, the deviation between the UTC offset broadcast in GNSS messages and BIPM’s results remains within 6 ns, and the residual standard deviation is below 2.5 ns, which meet the interoperability requirements of most users for navigation systems.

Key words: global satellite navigation system (GNSS), time interoperability, time offsets monitoring and evaluation

中图分类号: