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Research on Method for Improving Timing and Positioning Service Based on Satellite Timing Monitoring Data
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Liying NIE1, 2, 3, Longxia XU1, 2, 3, *, Xiaohui LI1, 2, 3
Journal of Geodesy and Geodynamics | 2025, 45(1) : 36 - 40
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Journal of Geodesy and Geodynamics | 2025, 45(1): 36-40
Research on Method for Improving Timing and Positioning Service Based on Satellite Timing Monitoring Data
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Liying NIE1, 2, 3, Longxia XU1, 2, 3, *, Xiaohui LI1, 2, 3
Affiliations
  • 1 National Time Service Center, CAS, 3 East-Shuyuan Road, Xi'an 710600, China
  • 2 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China
  • 3 Key Laboratory of Time Reference and Applications, CAS, 3 East-Shuyuan Road, Xi'an 710600, China

    • NIE Liying, postgraduate, majors in applications of timing monitoring data, E-mail:

About Author:

NIE Liying, postgraduate, majors in applications of timing monitoring data, E-mail:

Published: 2025-01-15 doi: 10.14075/j.jgg.2024.02.083
Outline
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By utilizing satellite time-monitoring data to mitigate the impact of satellite-side and transmission path errors in standard single-point positioning, the timing stability and positioning accuracy at the user end are improved. At the same time, the timing deviation of the user relative to the satellite navigation system is corrected to be relative to the national standard time. Taking GPS as an example for a short baseline experiment, the results show that in terms of timing, the mean timing deviation of the L1 frequency band was improved from -42.8 ns to 5.4 ns, and from -53.6 ns to 2.8 ns for the L2 frequency band; in terms of positioning, the mean positioning errors in the X, Y, and Z directions for the L1 frequency band were improved by more than 55%, and by more than 77% for the L2 frequency band. This proves that by using satellite time-monitoring data, users of the satellite navigation system can not only enhance the pseudo-code positioning accuracy to the sub-meter level but also obtain the deviation relative to the national standard time, achieving ns-level timekeeping of the national standard time.

timing monitoring  /  timing offsets  /  pseudocode  /  timing  /  positioning
聂骊颖, 许龙霞, 李孝辉. 基于卫星授时监测数据改善定时及定位方法研究. 大地测量与地球动力学, 2025 , 45 (1) : 36 -40 . DOI: 10.14075/j.jgg.2024.02.083
Liying NIE, Longxia XU, Xiaohui LI. Research on Method for Improving Timing and Positioning Service Based on Satellite Timing Monitoring Data[J]. Journal of Geodesy and Geodynamics, 2025 , 45 (1) : 36 -40 . DOI: 10.14075/j.jgg.2024.02.083
Funding
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  • National Natural Science Foundation of China(12073033)
  • The "Western Light" Talent Cultivation Program of the Chinese Academy of Sciences(XAB2020YN07)
Appendix
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Year 2025 volume 45 Issue 1
16
5
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Article Info
doi: 10.14075/j.jgg.2024.02.083
  • Receive Date：2024-02-28
  • Online Date：2026-10-30
  • Published：2025-01-15
Article Data
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History
  • Received：2024-02-28
Funding
National Natural Science Foundation of China(12073033)
The "Western Light" Talent Cultivation Program of the Chinese Academy of Sciences(XAB2020YN07)
Affiliations
    1 National Time Service Center, CAS, 3 East-Shuyuan Road, Xi'an 710600, China
    2 University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China
    3 Key Laboratory of Time Reference and Applications, CAS, 3 East-Shuyuan Road, Xi'an 710600, China
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https://castjournals.cast.org.cn/joweb/ddcl/EN/10.14075/j.jgg.2024.02.083
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