北斗+Galileo多频单历元精密单点定位性能分析

doi:10.13474/j.cnki.11-2246.2024.0702

测绘通报 ›› 2024, Vol. 0 ›› Issue (7): 6-11,94.doi: 10.13474/j.cnki.11-2246.2024.0702

北斗+Galileo多频单历元精密单点定位性能分析

徐胜意¹, 郭靖¹, 赵齐乐¹, 李圳¹, 乔灵娜²

1. 武汉大学卫星导航定位技术研究中心, 湖北武汉 430079;
2. 航天宏图信息技术股份有限公司, 北京 100000

收稿日期:2023-10-27 发布日期:2024-08-02
通讯作者: 李圳。E-mail:sdkjlizhen@foxmail.com
作者简介:徐胜意(1999—),男,硕士生,主要研究方向为GNSS精密单点定位。E-mail:shengyixu@whu.edu.cn
基金资助:
国家自然科学基金(42304032;41974035);第四届中国科协青年人才托举工程(2018QNRC001)

Performance analysis of BDS+Galileo single-epoch multi-frequency precision point positioning

XU Shengyi¹, GUO Jing¹, ZHAO Qile¹, LI Zhen¹, QIAO Lingna²

1. GNSS Research Center, Wuhan University, Wuhan 430079, China;
2. Piesat Information Technology Co., Ltd., Beijing 100000, China

Received:2023-10-27 Published:2024-08-02

摘要/Abstract

摘要： 精密单点定位(PPP)需数十分钟才能实现厘米级定位,充分利用多频多模观测数据可加速PPP收敛。本文基于大洋洲区域基准站数据,研究和分析了北斗+Galileo多频单历元精密单点定位性能。结果表明,多频观测值构建的超宽巷和宽巷模糊度对窄巷模糊度的固定有显著增益。相较于双频PPP整数解(PPP-AR),三频PPP-AR模糊度瞬时固定率由27.6%提升至69.2%,四频和五频则进一步提升至78.9%和76.9%。北斗+Galileo四频在东、北、天方向瞬时定位精度分别可达7.1、7.8、23.9 cm。

关键词: 北斗, 伽利略, 多频多模, PPP-AR

Abstract: Precise point positioning(PPP) typically requires tens of minutes to achieve centimeter-level positioning accuracy. However,the full utilization of multi-frequency and multi-constellation observations can accelerate PPP convergence. This study analyzes the BDS+Galileo multi-frequency single-epoch PPP performance based on the data from Australian regional reference stations. The results indicate that the extra wide-lane(EWL) and wide-lane(WL) ambiguity based on multi-frequency observations can improve the resolution of narrow-lane(NL) ambiguities significantly. Compared to dual-frequency PPP with ambiguity resolution(PPP-AR),the instantaneous ambiguity fixing rate increases significantly from 27.6% to 69.2% for triple-frequency PPP-AR. And it further increases to 78.9% and 76.9% for quad-and five-frequency solutions. The instantaneous positioning accuracy in the east,north,and up directions for BDS+Galileo quad-frequency solution can achieve 7.1,7.8 and 23.9 cm,respectively.

Key words: BDS, Galileo, multi-frequency and multi-constellation, PPP-AR

中图分类号:

P228

徐胜意, 郭靖, 赵齐乐, 李圳, 乔灵娜. 北斗+Galileo多频单历元精密单点定位性能分析[J]. 测绘通报, 2024, 0(7): 6-11,94.

XU Shengyi, GUO Jing, ZHAO Qile, LI Zhen, QIAO Lingna. Performance analysis of BDS+Galileo single-epoch multi-frequency precision point positioning[J]. Bulletin of Surveying and Mapping, 2024, 0(7): 6-11,94.

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北斗+Galileo多频单历元精密单点定位性能分析

Performance analysis of BDS+Galileo single-epoch multi-frequency precision point positioning

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