卫星钟差批处理估计的基准优化方法

黄卫权, 李梦浩, 张健, 王仁龙

黄卫权, 李梦浩, 张健, 王仁龙. 卫星钟差批处理估计的基准优化方法[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20240091
引用本文: 黄卫权, 李梦浩, 张健, 王仁龙. 卫星钟差批处理估计的基准优化方法[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20240091
HUANG Weiquan, LI Menghao, ZHANG Jian, WANG Renlong. The Datum Optimization Method for Satellite Clock Batch Estimation[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20240091
Citation: HUANG Weiquan, LI Menghao, ZHANG Jian, WANG Renlong. The Datum Optimization Method for Satellite Clock Batch Estimation[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20240091

卫星钟差批处理估计的基准优化方法

基金项目: 

国家重点研发计划(2021YFB3901300);国家自然科学基金(62373117)。

详细信息
    作者简介:

    黄卫权,博士,教授,研究方向为组合导航。huangweiquan@hrbeu.edu.cn

    通讯作者:

    李梦浩,博士生。limenghaoheu@hrbeu.edu.cn

The Datum Optimization Method for Satellite Clock Batch Estimation

  • 摘要: 超快速卫星钟差产品是实时高精度定位需求用户在网络受限条件下实现精密单点定位(Precise Point Positioning, PPP)服务的基础,其稳定性是影响 PPP 定位精度的重要因素。传统超快速卫星钟差批处理估 计固定单接收机钟为基准,由钟差噪声引起的参考接收机钟不稳定将会导致卫星钟差的稳定性降低。为此, 提出基于接收机钟拟稳约束的钟差基准优化方法,通过构建接收机钟差模型精度加权的钟差拟稳约束形成稳 健的接收机钟群局部重心基准,以提升卫星钟差批处理估计的稳定性。本文利用一个月全球网测站数据进行 GPS 卫星钟差批处理估计实验,相比于传统固定单接收机钟基准,本文所提钟差基准优化方法对于 BLOCK IIFRb、 BLOCK IIF Cs、 BLOCK IIR Rb、 BLOCK IIR-M Rb 和 BLOCK III Rb 不同卫星类型的卫星钟差模型拟 合精度分别提升 43.10%、1.73%、23.47%、16.34%和 47.49%,卫星钟差千秒频率稳定度分别提升 9.59%、0.04%、 0.35%、 0.33%和 11.22%,卫星钟差万秒频率稳定度分别提升 11.53%、 0.60%、 7.62%、 4.83%和 18.21%。 所 提方法能在参考接收机钟不稳定的恶劣情况下维持卫星钟差批处理估计的稳定性,提升了超快速卫星钟差产 品的稳定性,进而提升了卫星钟差预测和 PPP 精度。
    Abstract: Objectives: The ultra-rapid satellite clock product is the premise of high-precision Precise Point Positioning (PPP) service for users with limited network. The satellite clock stability affected by the clock datum is crucial for the positioning accuracy of PPP. The traditional clock datums fix an individual receiver clock for satellite clock batch estimation. However, the reference receiver clock is unstable caused by clock noise, which will reduce the stability of batch estimated satellite clock. Methods: By constructing quasi-stable constraints weighted by the receiver clock model accuracy, an optimized clock datum is constructed based on the robust partial barycenter datum for receiver clock group to improve the stability of satellite clock batch estimation. Results: One-month GPS satellite clock batch estimation experiments based on global network observation data have been implemented. By comparing with the traditional and the proposed clock datums, for different satellite types of BLOCK IIF Rb, BLOCK IIF Cs, BLOCK IIR Rb, BLOCK IIR-M Rb and BLOCK III Rb, the stability evaluation results have revealed that the satellite clock model accuracy is improved by 43.10%, 1.73%, 23.47%, 16.34% and 47.49%, respectively. The frequency stability of 1,000 seconds is improved by 9.59%, 0.04%, 0.35%, 0.33% and 11.22%, respectively. The frequency stability of 10,000 seconds is improved by 11.53%, 0.60%, 7.62%, 4.83% and 18.21%, respectively. Conclusions: The proposed method can effectively reduce the impact of unstable reference receiver clock on the stability of satellite clock batch estimation, and improve the stability of ultra-rapid satellite clock product. The accuracy of satellite clock prediction and PPP are then improved, respectively.
  • [1]

    Ye S, Zhao L, Song J, et al. Analysis of estimated satellite clock biases and their effects on precise point positioning[J]. GPS Solutions, 2018, 22: 1-14.

    [2] Zhang J, Zhao L, Yang F, et al. PPP integrity monitoring algorithm for general-purpose navigation applications[J]. Acta Aeronautica et AstronauticaSinica, 2023, 44(13): 327904.(张洁, 赵琳, 杨福鑫, 等. 面向大众导航应用的精密单点定位完好性监测方法[J]. 航空学报, 2023, 44(13): 196-206.)
    [3] Zhao Q, Tao J, Guo J,et al.Wide-Area Instantaneous cm-Level Precise Point Positioning: Method and ServiceSystem[J]. Geomatics and Information Science of Wuhan University, 2023, 48(7): 1058-1069.(赵齐乐, 陶钧, 郭靖, 等. 广域瞬时厘米级精密单点定位和服务系统[J]. 武汉大学学报(信息科学版), 2023, 48(07): 1058-1069.)
    [4] Li B, Miao W, Chen G. Key Technologies and Challenges of Multi-frequency and Multi-GNSSHigh-Precision Positioning[J].Geomatics and Information Science of Wuhan University,2023,48(11):1769-1783.(李博峰, 苗维凯, 陈广鄂. 多频多模GNSS高精度定位关键技术与挑战[J]. 武汉大学学报(信息科学版), 2023, 48(11): 1769-1783.)
    [5] Geng J, Yan Z, Wen Q. Multi-GNSS Satellite Clock and Bias Product Combination: The Third IGSReprocessing Campaign[J]. Geomatics and Information Science of Wuhan University, 2023, 48(7): 1070-1081.(耿江辉, 闫哲, 温强. 多系统GNSS卫星钟差和偏差产品综合: IGS第3 次重处理[J]. 武汉大学学报(信息科学版), 2023, 48(07): 1070-1081.)
    [6]

    Chen Q, Song S, Zhou W. Accuracy analysis of GNSS hourly ultra-rapid orbit and clock products from SHAO AC of iGMAS[J]. Remote Sensing, 2021, 13(5): 1022.

    [7]

    Jiao G, Song S. High-rate one-hourly updated ultra-rapid multi-GNSS satellite clock offsets estimation and its application in real-time precise point positioning[J]. Remote Sensing, 2022, 14(5): 1257.

    [8]

    Henkel P, Psychas D, Günther C, et al. Estimation of satellite position, clock and phase bias corrections[J]. Journal of Geodesy, 2018, 92: 1199-1217.

    [9]

    Odijk D, Zhang B, Khodabandeh A, et al. On the estimability of parameters in undifferenced, uncombined GNSS network and PPP-RTK user models by means of S-system theory[J]. Journal of Geodesy, 2016, 90(1): 15-44.

    [10]

    Huang G, Xie W, Fu W, et al. BDS Real-time Satellite Clock Offsets Estimation with Three Different Datum Constraints[J]. J. Glob. Position. Syst, 2021, 17: 34-47.

    [11]

    Xie W, Huang G, Fu W, et al. An efficient clock offset datum switching compensation method for BDS real-time satellite clock offset estimation[J]. Advances in Space Research, 2021, 68(4): 1802-1813.

    [12]

    Cheng J, Liu X, Li H, et al. A Real-Time Clock Offset Datum Maintenance Method Based on Short-Term Clock Offset Prediction[C]//Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+2023). 2023: 800-814.

    [13]

    Zhao L, Dousa J, Ye S, et al. A flexible strategy for handling the datum and initial bias in real-time GNSS satellite clock estimation[J]. Journal of Geodesy, 2020, 94: 1-11.

    [14]

    Zhang L, Yang H, Yao Y, et al. A new datum jump detection and mitigation method of Real-Time Service (RTS) clock products[J]. GPS Solutions, 2019, 23: 1-12.

    [15] Huang G, Wang H, Xie W, et al. Technical Progress of GNSS Real-time Satellite Clock Offset Estimation[J]. Navigation Positioning and Timing, 2020, 7(05): 1-9.(黄观文, 王浩浩, 谢威, 等. GNSS实时卫星钟差估计技术进展[J]. 导航定位与授时, 2020, 7(05): 1-9.)
    [16]

    Fu W, Yang Y, Zhang Q, et al. Real-time estimation of BDS/GPS high-rate satellite clock offsets using sequential least squares[J]. Advances in Space Research, 2018, 62(2): 477-487.

    [17]

    Fu W, Huang G, Zhang Q, et al. Multi-GNSS real-time clock estimation using sequential least square adjustment with online quality control[J]. Journal of Geodesy, 2019, 93: 963-976.

    [18]

    Song W, Yi W, Lou Y, et al. Impact of GLONASS pseudorange inter-channel biases on satellite clock corrections[J]. GPS solutions, 2014, 18: 323-333.

    [19] Zhao D,Lei Y.Long-Term Characteristics Analysis of GLONASS In-Flight Clocks[J].Geomatics and Information Scienceof Wuhan University,2021,46(6):895-904.(赵丹宁,雷雨.GLONASS星载原子钟的长期特性分析[J]. 武汉大学学报(信息科学版),2021,46(6):895-904.)
    [20] Yuan J, Meng R. Research on Interpolation and Forecasting Method of GPS Precise Clock Bias[J]. Journal of Geomatics, 2018, 43(05): 64-67.(袁俊军, 孟瑞祖. GPS导航卫星精密钟差的插值和预报方法研究[J]. 测绘地理信息, 2018, 43(05): 64-67.)
    [21]

    Li M, Huang W, Li H, et al. Satellite Clock Batch Estimation Accuracy Analysis and Its Impacts on PPP[J]. Remote Sensing, 2022, 14(16): 3932.

    [22]

    Yang X, Wang Q, Xue S. Random optimization algorithm on GNSS monitoring stations selection for ultra-rapid orbit determination and real-time satellite clock offset estimation[J]. Mathematical Problems in Engineering, 2019, 2019.

    [23]

    Yao Y, He Y, Yi W, et al. Method for evaluating real-time GNSS satellite clock offset products[J]. GPS Solutions, 2017, 21: 1417-1425.

    [24] Mao Y, WangQ, Hu C, et al. Analysis of the Characterization for BDS-3 Satellite Clock Error[J]. Geomatics and Information Science of Wuhan University, 2020,45(1):53-61( 毛亚,王潜心,胡超等.BDS-3卫星钟差特性分析[J].武汉大学学报(信息科学版),2020,45(1):53-61.)
    [25]

    Gu S, Mao F, Gong X, et al. Improved short-term stability for real-time GNSS satellite clock estimation with clock model[J]. Journal of Geodesy,2023, 97(6): 61.

    [26]

    Huang W, Li M, Li H, et al. A Compensation Method of Satellite Clock Day-Boundary Jumps Based on Epoch-Differenced[C]//China Satellite Navigation Conference (CSNC 2021) Proceedings: Volume III. Springer Singapore, 2021: 26-36.

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出版历程
  • 收稿日期:  2024-06-10
  • 网络出版日期:  2024-06-26

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