BDS-3实时精密产品质量评估及其PPP性能分析

doi:10.13474/j.cnki.11-2246.2021.0071

测绘通报 ›› 2021, Vol. 0 ›› Issue (3): 18-22,74.doi: 10.13474/j.cnki.11-2246.2021.0071

BDS-3实时精密产品质量评估及其PPP性能分析

徐欣彤¹, 杨志鑫¹, 张林杰¹, 杨颖², 王怡欣¹, 钱闯¹, 刘晖¹

1. 武汉大学卫星导航定位技术研究中心, 湖北武汉 430079;
2. 中国科学院微电子研究所, 北京 100029

收稿日期:2020-10-19 出版日期:2021-03-25 发布日期:2021-04-02
通讯作者: 刘晖。E-mail:liuhui@wnlbs.com
作者简介:徐欣彤(1996—),女,主要研究方向为实时精密单点定位算法。E-mail:312001389@qq.com
基金资助:
武汉市应用基础研究计划（2018010401011271）；湖北省重点研发计划（2020BAB095）

Quality assessment of BDS-3 real-time precision product and analysis of PPP performance

XU Xintong¹, YANG Zhixin¹, ZHANG Linjie¹, YANG Ying², WANG Yixin¹, QIAN Chuang¹, LIU Hui¹

1. GNSS Center, Wuhan University, Wuhan 430079, China;
2. Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, China

Received:2020-10-19 Online:2021-03-25 Published:2021-04-02

摘要/Abstract

摘要： 随着北斗三号全球卫星导航系统的正式开通，各数据分析中心陆续开始提供北斗三号系统的实时精密产品，使基于北斗三号的实时精密单点定位（PPP）成为可能。实时精密产品质量是影响实时PPP定位性能的重要因素，直接决定了实时PPP的可用性、收敛时间和定位精度。为了促进基于北斗三号的实时PPP的研究和应用发展，本文对现有的北斗三号实时精密产品质量进行了评估，包括数据完整率、钟差精度和轨道精度，并结合全球均匀分布的5个基准站的观测数据，分析了北斗三号的实时PPP性能。试验结果表明，北斗三号实时数据完整率为98.3%，精密钟差和轨道精度分别为0.8 ns、8 cm，加入北斗三号系统后，相比GPS的实时PPP收敛速度提高了30%，定位精度提高了8%。

关键词: BDS-3, 实时精密产品, 数据质量, RTPPP

Abstract: With the official opening of the BDS-3, various data analysis centers have successively begun to provide real-time precision products of the BDS-3 system, making real-time precise point positioning (PPP) based on the BDS-3 is possible. The quality of real-time precision products is an important factor affecting real-time PPP positioning performance, and directly determines the availability, convergence time and positioning precision of real-time PPP. In order to promote the research and application development of real-time PPP based on BDS-3, this paper evaluates the quality of the existing BDS-3 real-time precision products, including data integrity rate, clock bias precision, and orbit precision, combined with observation data from 5 reference stations evenly distributed around the world, and analyzes the real-time PPP of BDS-3 performance. Experimental results show that the real-time data integrity rate of BDS-3 is 98.3%, and the precise clock bias and orbit precision are 0.8 ns and 8 cm respectively.Compared with GPS, the real-time PPP convergence speed is increased by 30%, and the positioning precision is increased by 8% after joining the BDS-3 system.

Key words: BDS-3, real-time products, quality of data, RTPPP

中图分类号:

P228

徐欣彤, 杨志鑫, 张林杰, 杨颖, 王怡欣, 钱闯, 刘晖. BDS-3实时精密产品质量评估及其PPP性能分析[J]. 测绘通报, 2021, 0(3): 18-22,74.

XU Xintong, YANG Zhixin, ZHANG Linjie, YANG Ying, WANG Yixin, QIAN Chuang, LIU Hui. Quality assessment of BDS-3 real-time precision product and analysis of PPP performance[J]. Bulletin of Surveying and Mapping, 2021, 0(3): 18-22,74.

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BDS-3实时精密产品质量评估及其PPP性能分析

Quality assessment of BDS-3 real-time precision product and analysis of PPP performance

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