Precise point positioning time transfer based on receiver clock offsets constraint
-
摘要: 精密单点定位(PPP)技术起初主要面向定位与导航等位置应用. 近年来，PPP技术逐渐成为时间传递等非定位应用的一种重要且有效的手段. 如今，具有更高稳定性的氢原子钟也被越来越多的测站用来提供时间频率基准. 而传统的PPP时间传递方法通常在数据处理时将接收机钟差参数视为白噪声(WN)参数进行处理，并未充分利用原子钟的高稳定特性. 因此，基于实测数据计算得到氢原子钟的经验方差，提出了一种接收机钟差参数的约束方法来提高PPP时间传递性能. 通过三条时间链路进行验证分析，结果表明：相较于传统的PPP时间传递方法，提出的基于接收机钟差约束的PPP时间传递方法在整体上具有更高的稳定性，其中短期稳定性可以实现量级的提升.
-
关键词:
- 精密单点定位(PPP) /
- 接收机钟差 /
- 时间传递 /
- 原子钟 /
- 时间链路
Abstract: Precise point positioning (PPP) was originally developed for positioning and navigation applications. Recently it has gradually been accepted as an effective tool for non-positioning applications such as time transfer. Nowadays, more and more stations use the high stability Hydrogen atomic clock to provide datum of time and frequency. However, receiver clock offsets are generally regarded as white noise parameters in customary PPP time transfer method, which does fully utilize the high stability of Hydrogen masers. Therefore, we calculate the empirical variance of H-masers based on real GPS observations, and proposed a constraint method of receiver clock offsets between adjacent epochs to improve the performance of PPP time transfer. We confirm this model by three time links experiment. The results imply that, compared with the customary PPP time transfer method, our method has higher stability and the short-term stability can increase up to one order of magnitude.-
Key words:
- precise point positioning(PPP) /
- receiver clock offset /
- time transfer /
- atomic clock /
- time link
-
[1] ZUMBERGE J F, HEFLIN M B, JEFFERSON D C, et al. Precise point positioning for the efficient and robust analysis of GPS data from large networks[J]. Journal of geophysical research atmospheres, 1997, 102(B3): 5005-5017. DOI: 10.1029/96JB03860 [2] 张宝成. GNSS非差非组合精密单点定位的理论方法与应用研究[D]. 北京: 中国科学院测量与地球物理研究所, 2012. [3] 张宝成. GNSS非差非组合精密单点定位的理论方法与应用研究[J]. 测绘学报, 2014, 43(10): 1099. [4] 江志恒. GPS全视法时间传递回顾与展望[J]. 宇航计测技术, 2007(z1): 53-71. DOI: 10.3969/j.issn.1000-7202.2007.z1.009 [5] 张小红, 蔡诗响, 李星星, 等. 利用GPS精密单点定位进行时间传递精度分析[J]. 武汉大学学报(信息科学版), 2010, 35(3): 274-278. [6] ORGIAZZI D, TAVELLA P, LAHAYE F. Experimental assessment of the time transfer capability of Precise Point Positioning (PPP)[C]//Proceedings of the 37th Annual Precise Time and Time Interval Systems and Applications Meeting, Vancouver, Canada, 2015: 337-345. [7] 徐宗秋, 丁新展, 蔚泽然, 等. BDS三频PPP时间传递精度分析[J]. 测绘科学, 2020, 45(5): 23-27, 41. [8] PETIT G, KANJ A, LOYER S, et al. 1×1016 frequency transfer by GPS PPP with integer ambiguity resolution[J]. Metrologia, 2015, 52(2): 301. DOI: 10.1088/0026-1394/52/2/301 [9] LEE S W, SCHUTZ B E, LEE C B, et al. A study on the common-view and all-in-view GPS time transfer using carrier-phase measurements[J]. Metrologia, 2008, 45(2): 156. DOI: 10.1088/0026-1394/45/2/005 [10] 张立. 基于北斗PPP的国际时间传递初步研究[D]. 北京: 中国科学院大学, 2017. [11] 艾青松. GNSS星载原子钟时频特性分析及钟差预报算法研究[D]. 西安: 长安大学, 2017. [12] AI Q S, YUAN Y B, XU T H, et al. Time and frequency characterization of GLONASS and Galileo on-board clocks[J]. Measurement science and technology, 2020, 31(6): 065003. DOI: 10.1088/1361-6501/ab69d3 [13] TEUNISSEN P J G, KLEUSBERG A. GPS for Geodesy [M/OL]. [2021-01-19]. Springer-Verlag BerlinHdidelberg, 1998. https://www.springer.com/us/book/9783642720130 [14] LEICK A, RAPOPORT L, TATARNIKOV D. GPS Satellite Surveying [M/OL]. [2021-01-19]. John wiley and sons, 2015. https://onlinelibrary.wiley.com/doi/book/10.1002/9781119018612 [15] HUTSELL C S T. Relating the hadamard variance to MCS Kalman filter clock estimation[C/OL]//Proceedings of the 27th Annual Precise Time and Time Interval(PTTI), Applications and Planning Meeting, 1995(12): 291-302. https://ntrs.nasa.gov/api/citations/19960042636/downloads/19960042636.pdf [16] BAUGH R A. Frequency modulation analysis with the Hadamard variance[C]//Proceedings of the 25th Annual Symposium on Frequency Control, 1971. DOI: 10.1109/FREQ.1971.199860 -
下载:
点击查看大图
图(6)
计量
- 文章访问数: 420
- HTML全文浏览量: 259
- PDF下载量: 39
- 被引次数: 0
