利用多路径半天球图模型削弱GPS三频PPP时间传递中的多路径效应

doi:10.13474/j.cnki.11-2246.2025.1014

测绘通报 ›› 2025, Vol. 0 ›› Issue (10): 82-86,113.doi: 10.13474/j.cnki.11-2246.2025.1014

• 学术研究 • 上一篇

利用多路径半天球图模型削弱GPS三频PPP时间传递中的多路径效应

屈利忠¹, 郑冰雁¹, 李竟超¹, 门明宇¹, 张北北¹, 武润泽^2,3

1. 北京建筑大学测绘与城市空间信息学院, 北京 102616;
2. 北京市测绘设计研究院测绘与自然资源空间数据技术武润泽工作室, 北京 100045;
3. 北京市技能大师工作室, 北京 100045

收稿日期:2025-06-19 发布日期:2025-10-31
作者简介:屈利忠(1986-),男,博士,副教授,研究方向为北斗/GNSS多频多模精密定位技术。E-mail:qulizhong@bucea.edu.cn
基金资助:
国家自然科学基金(42104026);北京市自然科学基金(4204094);北京建筑大学培育项目专项资金(X25024)

Using a multipath hemispherical map model to mitigate multipath effects in GPS triple-frequency PPP time transfer

QU Lizhong¹, ZHENG Bingyan¹, LI Jingchao¹, MEN Mingyu¹, ZHANG Beibei¹, WU Runze^2,3

1. School of Geomatics and Urban Spatial Information, Beijing University of Civil Engineering and Architecture, Beijing 102616, China;
2. Surveying and Natural Resource Spatial Data Technology Wu Runze Studio, Beijing Institute of Surveying and Mapping Design and Research, Beijing 100045, China;
3. Beijing Skill Master Studio, Beijing 100045, China

Received:2025-06-19 Published:2025-10-31

摘要/Abstract

摘要： 为削弱GPS三频PPP时间传递中的多路径效应,提升时间传递精度与稳定性,本文选取了USN7-USN8(0km)、IENG-WAB2(212km)和PTBB-WAB2(3406km)3条基线进行试验。采用这6个测站2024年年积日061～068的GPS三频PPP观测值残差,构建了GPS三频观测值多路径半天球图模型,对比了2024年年积日069多路径改正前后GPS双频和三频PPP时间传递的性能。试验结果表明,GPS双频和三频PPP的3条基线解接收机钟差的阿伦方差分别提高了36.1%、25.3%、12.4%和36.8%、25.6%、12.8%。基于观测残差构建的多路径半天球图模型可有效抑制多路径误差,提升GPS三频PPP时间传递的稳定性与精度。

关键词: GPS三频, 多路径误差, 多路径半天球图模型, 阿伦方差, 接收机钟差

Abstract: To mitigate the multi-path effects in GPS triple-frequency PPP time transfer and improve the accuracy and stability of time transfer.Three baselines are selected for the experiment: USN7-USN8 (0 km), IENG-WAB2 (212 km)and PTBB-WAB2 (3406 km).Using the residuals from seven days of GPS triple-frequency PPP observations (from solar day 061 to 068 in 2024)at these six stations, a GPS triple-frequency observation multi-path hemispherical map model is constructed.The performance of GPS dual-frequency and triple-frequency PPP time transfer before and after multipath correction on solar day 069 in 2024 is compared.The Allan variance of receiver clock differences for the three baselines of GPS dual-frequency and triple-frequency PPP solutions improved by 36.1%, 25.3%, and 12.4%, respectively, and by 36.8%, 25.6%, and 12.8%, respectively.The multipath hemispherical map model constructed based on observation residuals can effectively suppress multi-path errors and enhance the stability and accuracy of GPS triple-frequency PPP time transfer.

Key words: GPS triple-frequency, multi-path error, multi-path hemispherical map model, Allen variance, receiver clock bias

中图分类号:

P228

屈利忠, 郑冰雁, 李竟超, 门明宇, 张北北, 武润泽. 利用多路径半天球图模型削弱GPS三频PPP时间传递中的多路径效应[J]. 测绘通报, 2025, 0(10): 82-86,113.

QU Lizhong, ZHENG Bingyan, LI Jingchao, MEN Mingyu, ZHANG Beibei, WU Runze. Using a multipath hemispherical map model to mitigate multipath effects in GPS triple-frequency PPP time transfer[J]. Bulletin of Surveying and Mapping, 2025, 0(10): 82-86,113.

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利用多路径半天球图模型削弱GPS三频PPP时间传递中的多路径效应

Using a multipath hemispherical map model to mitigate multipath effects in GPS triple-frequency PPP time transfer

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