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Initial Performance Evaluation of Precise Point Positioning with Triple-Frequency Observations from BDS-2 and BDS-3 Satellites

Published online by Cambridge University Press:  20 February 2020

Wenjie Zhang ,
Hongzhen Yang Open the ORCID record for Hongzhen Yang [Opens in a new window] ,
Chen He ,
Zhiqiang Wang ,
Weiping Shao ,
Yongfeng Zhang  and
Jing Wang
Wenjie Zhang
Affiliation:
(State Grid Zhejiang Electric Power Co., Ltd., Huanglong Road 8, Hangzhou310000, Zhejiang, China)
Hongzhen Yang*
Affiliation:
(State Grid Zhejiang Electric Power Co., Ltd., Huanglong Road 8, Hangzhou310000, Zhejiang, China)
Chen He
Affiliation:
(State Grid Zhejiang Electric Power Co., Ltd., Huanglong Road 8, Hangzhou310000, Zhejiang, China)
Zhiqiang Wang
Affiliation:
(State Grid Zhejiang Electric Power Co., Ltd., Huanglong Road 8, Hangzhou310000, Zhejiang, China)
Weiping Shao
Affiliation:
(State Grid Zhejiang Electric Power Co., Ltd., Huanglong Road 8, Hangzhou310000, Zhejiang, China)
Yongfeng Zhang
Affiliation:
(Wuhan Panda Space Time Technology Co., Ltd., Room 1406, Rongke, Luoyu Center, Luoyu Road 95, Wuhan430000, Hubei, China)
Jing Wang
Affiliation:
(Suzhou Institute, Beihang University, Daoyuan Road 18, Suzhou215000, Jiangsu, China)
*
(E-mail: henrry007@163.com)
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Abstract

This paper presents an investigation of the precise point positioning (PPP) performance of a combined solution from BDS-2 and BDS-3 satellites. To simultaneously process different BDS signal observations, i.e., B1/B1C, B2/B2a and B3C, undifferenced and uncombined observations with ionosphere delay constrained by the deterministic plus stochastic ionosphere model are used in the basic model. Special attention is paid to code bias and receiver clock parameters in the derivation of the observation model. The analysis is carried out using more than one-month data for BDS-2 and BDS-3 collected at the CANB, DWIN, KNDY and PETH stations in the Asia-Pacific region. The results suggest that compared with BDS-2 alone, the BDS-2 and BDS-3 solution provides significantly more accurate PPP, with increases of 28%, 21% and 5% in the up, north and east directions, respectively. In addition, the average root mean square error decreases to 0·21, 0·13 and 0·16 m for the three directions. Furthermore, the PPP convergence time for BDS-2 and BDS-3 is about 1·5 h and less than 1 h for the horizontal and vertical components, respectively, whereas that for BDS-2 alone is about 2·3 h for both directions.

Keywords

BDS-2BDS-3PPPUndifferenced and uncombined observation modelDESIGN
Type
Research Article
Information
The Journal of Navigation , Volume 73 , Issue 4 , July 2020 , pp. 763 - 775
Copyright
Copyright © The Royal Institute of Navigation 2020

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