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UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system

文献类型：期刊论文

作者Fang, Jing2,3; Tu, Rui1; Zhang, Pengfei2,3; Zhang, Rui2,3; Lu, Xiaochun2,3
刊名ADVANCES IN SPACE RESEARCH
出版日期2024-10-01
卷号74期号:7页码:2883-2900
关键词Low-Earth orbit Uncalibrated phase delay Static precise point positioning Kinematic precise point positioning Ambiguity resolution
ISSN号0273-1177
DOI10.1016/j.asr.2024.06.023
英文摘要Low-Earth orbit (LEO) satellites have fast motion and thus provide rapid geometric change relation to the ground stations in a short period of time, which are expected to improve the positioning performance. In this study, a LEO constellation of 160 LEO satellites was simulated and simulated LEO observation data at global, European, and American stations were used to estimate the uncalibrated phase delays (UPDs) and achieve static and kinematic precise point positioning (PPP) ambiguity resolution (AR). The quality of the estimated UPD products were evaluated. More than 89 % and 96 % of the wide- and narrow-lane UPDs had a posteriori residual of less than 0.15 and 0.25 cycles, respectively. In static PPP, all ambiguity fixing rates were larger than 63 %. Compared with float solutions, the average convergence time of the fix solutions at the global, European and American stations was accelerated by 8 %, 6 % and 7 %, respectively; the average root-mean-square errors (RMSEs) in the east, north, and up components at the global, European and American stations were decreased by (22 %, 20 %, 15 %), (36 %, 34 %, 28 %) and (44 %, 31 %, 29 %), respectively. In kinematic PPP, all ambiguity fixing rates were larger than 40 %. Compared with float solutions, the average convergence time of the fix solutions at the global, European and American stations was accelerated by 4 %, 19 % and 14 %, respectively; the average RMSEs in the east, north, and up components at the global, European and American stations were decreased by (10 %, 10 %, 7 %), (27 %, 22 %, 11 %) and (32 %, 20 %, 10 %), respectively. In both static and kinematic PPP, AR accelerated the convergence time and improved the positioning accuracy. (c) 2024 COSPAR. Published by Elsevier B.V. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
WOS关键词MULTI-GNSS ; PPP
资助项目National Natural Science Foundation of China[41974032] ; National Natural Science Foundation of China[42274019]
WOS研究方向Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:001297726900001
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://210.72.145.45/handle/361003/14417]  
专题国家授时中心_导航与通信研究室
通讯作者Tu, Rui
作者单位1.Shandong Univ Sci & Technol, Coll Geodesy & Geomat, Qingdao 266590, Peoples R China
2.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Jing,Tu, Rui,Zhang, Pengfei,et al. UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system[J]. ADVANCES IN SPACE RESEARCH,2024,74(7):2883-2900.
APA Fang, Jing,Tu, Rui,Zhang, Pengfei,Zhang, Rui,&Lu, Xiaochun.(2024).UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system.ADVANCES IN SPACE RESEARCH,74(7),2883-2900.
MLA Fang, Jing,et al."UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system".ADVANCES IN SPACE RESEARCH 74.7(2024):2883-2900.

入库方式： OAI收割

来源：国家授时中心

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