Global precision analysis of carrier phase relative positioning in BeiDou navigation satellite system and United States global positioning system

作     者：Letao ZHOU Dingfa HUANG Wei FENG Wu CHEN Xi ZHANG Li YAN 

作者机构：Department of Surveying and Geo-Informatics Faculty of Geosciences and Environmental EngineeringSouthWest JiaoTong University Department of Land Surveying and Geo-Informatics Hong Kong Polytechnic University 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2019年第62卷第4期

页      面：733-749页

核心收录：

学科分类：07[理学] 0708[理学-地球物理学] 0704[理学-天文学] 

基　　金：supported by National Key Research Program of China(Grant No.2016YFB0501900) National Natural Science Foundation of China(Grant Nos.41874008,41374032) The University Grants Committee of HongKong Research Grants Council Project(Grant No.PolyU 152023/14E) 

主　　题：BeiDou navigation satellite system Relative positioning Dilution of precision Frequency dilution of precision Spatial-temporal availability 

摘      要：In this paper, we derived a high-efficiency formula for calculating the precision of carrier phase relative positioning,analyzed the various factors that affect the positioning accuracy using the carrier phase, and proposed the concept of using a frequency dilution of precision to describe the quantitative effect of different frequency combinations on the positioning precision. To this end, we computed and plotted the global spatial distribution map of the relative positioning dilution of precision for single-day solution, half-hour solution, and single-epoch solution of the global positioning system(GPS), regional Beidou navigation satellite system(BDS2), future global Beidou navigation satellite system(BDS3), and their fusion systems.Using processing software with autonomous intellectual property rights(GCN and VENUS/ARSNet), we solved the measurement data and examined the positioning precision of the single-day solution and single-epoch solution of GPS and BDS2.The analysis demonstrated that the B1/B2 frequency positioning precision of BDS2 was better than that of L1/L2 frequency positioning of GPS, but the positioning precision of the BDS2 is worse than that of GPS over most of the service region of the BDS2. Further, the positioning precision of BDS3 is better than that of GPS in the Asia-Pacific region, while it is the opposite in other regions. Based on these conclusions, we put forth some optimization recommendations regarding the signal frequency of the navigation system and GPS measurement standards to serve as references for optimizing the system performance and formulating standards.