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

doi:10.13474/j.cnki.11-2246.2021.0071

Abstract

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

CLC Number:

P228

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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