BDS-3双频数据非差非组合PPP定位性能比较分析

doi:10.13474/j.cnki.11-2246.2025.0808

测绘通报 ›› 2025, Vol. 0 ›› Issue (8): 48-54,61.doi: 10.13474/j.cnki.11-2246.2025.0808

BDS-3双频数据非差非组合PPP定位性能比较分析

周命端, 崔立锟, 孟明智, 解乾龙, 李玥瑶, 宋峤, 于润昕

北京建筑大学测绘与城市空间信息学院, 北京 102616

收稿日期:2024-11-27 出版日期:2025-08-25 发布日期:2025-09-02
作者简介:周命端(1985—),男,博士,副教授,主要研究方向为卫星定位理论与技术及其时空应用。E-mail:mdzhou@bucea.edu.cn
基金资助:
北京市教育科学“十四五”规划2024年度延续课题(AFCA24065)

Comparative analysis of undifferenced and uncombined precise point positioning performance for BDS-3 dual-frequency data

ZHOU Mingduan, CUI Likun, MENG Mingzhi, XIE Qianlong, LI Yueyao, SONG Qiao, YU Runxin

School of Geomatrics and Urban Spatial Informatics, Beijing University of Civil Engineering and Architecture, Beijing 102616, China

Received:2024-11-27 Online:2025-08-25 Published:2025-09-02

摘要/Abstract

摘要： 针对BDS-3播发B1I/B3I/B1C/B2a等信号,以及当前B1I+B3I与B1C+B2a数据的PPP定位性能比较分析比较少的问题,本文在建立BDS-3非差非组合PPP定位模型的基础上,详细推导了BDS-3非差非组合PPP整周模糊度固定算法的实现流程。基于Visual Studio 2022开发平台,利用C/C++编程语言,设计和开发了一种BDS-3非差非组合PPP定位分析软件(UDUC_PPP),用于比较分析BDS-3 B1I+B3I与B1C+B2a数据非差非组合PPP定位性能。试验选取MGEX试验网支持BDS-3 B1I/B3I/B1C/B2a等信号的14个全球分布代表性测站,2024年060 d基于24 h的连续观测数据,进行非差非组合PPP定位性能比较分析。结果表明,对于B1I+B3I和B1C+B2a数据,BDS-3非差非组合PPP固定解定位收敛时间和定位精度均优于浮点解定位,其中B1I+B3I和B1C+B2a数据的BDS-3非差非组合PPP定位收敛后模糊度固定成功率均在92.5%以上,且获得了平面RMSE均值优于0.9 cm、点位RMSE均值优于2.3 cm的BDS-3非差非组合PPP固定解定位精度;对于浮点解和固定解,BDS-3 B1C+B2a数据非差非组合PPP定位的收敛时间均优于B1I+B3I数据,在定位精度上基本相当。

关键词: 北斗三号卫星导航系统, 精密单点定位, 非差非组合模型, 整周模糊度固定, 双频数据

Abstract: In view of the fact that BDS-3 broadcasting B1I/B3I/B1C/B2a signals and the comparative analysis of PPP positioning performance for the current B1I+B3I and B1C+B2a data is still relatively scarce.In this paper,based on the establishment of the BDS-3 undifferenced and uncombined PPP positioning model,an implementation flowchart of integer ambiguity fixed algorithm for BDS-3 undifferenced and uncombined PPP is decuced in detail.The BDS-3 undifferenced and uncombined PPP positioning analysis software (short as UDUC_PPP)using C/C++programming language based on Visual Studio 2022 development platform is designed and developed applied to compare and analyze the positioning performance of BDS-3 undifferenced and uncombined PPP for B1I+B3I and B1C+B2a data.Supported by BDS-3 B1I/B3I/B1C/B2a signals from fourteen representative stations with globally distributed in the MGEX experimental network for 060 d for 24 hours consecutive observation data in 2024 are selected for the positioning performance analysis,the results show that the convergence time and the positioning accuracy of BDS-3 undifferenced and uncombined PPP fixed resolution are better than the float resolution positioning for not only B1I+B3I data but also B1C+B2a data,in which the integer ambiguity resolution success rate is 92.5%above after the positioning convergence for BDS-3 undifferenced and uncombined PPP for both of B1I+B3I and B1C+B2a data,meanwhile the positioning accuracy of BDS-3 undifferenced and uncombined PPP fixed resolution is better than 0.9 cm in the horizontal-RMSE and 2.3 cm in the point-RMSE respectively.For both float resolution and fixed resolution,BDS-3 undifferenced and uncombined PPP positioning in terms of convergence time for B1C+B2a data is better than for B1I+B3I data,which the positioning accuracy is basically comparable.

Key words: BeiDou-3 Satellite Navigation System, precise point positioning, undifferenced and uncombined model, integer ambiguity resolution, dual-frequency data

中图分类号:

P228

周命端, 崔立锟, 孟明智, 解乾龙, 李玥瑶, 宋峤, 于润昕. BDS-3双频数据非差非组合PPP定位性能比较分析[J]. 测绘通报, 2025, 0(8): 48-54,61.

ZHOU Mingduan, CUI Likun, MENG Mingzhi, XIE Qianlong, LI Yueyao, SONG Qiao, YU Runxin. Comparative analysis of undifferenced and uncombined precise point positioning performance for BDS-3 dual-frequency data[J]. Bulletin of Surveying and Mapping, 2025, 0(8): 48-54,61.

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BDS-3双频数据非差非组合PPP定位性能比较分析

Comparative analysis of undifferenced and uncombined precise point positioning performance for BDS-3 dual-frequency data

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