UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system

doi:10.1016/j.asr.2024.06.023

NTSC-IR > 导航与通信研究室

	UPDs estimation and ambiguity resolution performance evaluation of LEO navigation system
	Fang, Jing 1,2; Tu, Rui 3; Zhang, Pengfei 1,2; Zhang, Rui 1,2; Lu, Xiaochun 1,2
	2024-10-01
发表期刊	ADVANCES IN SPACE RESEARCH
ISSN	0273-1177
卷号	74 期号:7 页码:2883-2900
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.
关键词	Low-Earth orbit Uncalibrated phase delay Static precise point positioning Kinematic precise point positioning Ambiguity resolution
资助者	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
DOI	10.1016/j.asr.2024.06.023
关键词[WOS]	MULTI-GNSS ; PPP
语种	英语
资助项目	National Natural Science Foundation of China[41974032] ; National Natural Science Foundation of China[42274019]
资助者	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
WOS研究方向	Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Engineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001297726900001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/14417
专题	导航与通信研究室
通讯作者	Tu, Rui
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Shu Yuan Rd, Xian 710600, Peoples R China 2.Univ Chinese Acad Sci, Yu Quan Rd, Beijing 100049, Peoples R China 3.Shandong Univ Sci & Technol, Coll Geodesy & Geomat, Qingdao 266590, 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.