High-Accuracy Positioning Based on Pseudo-Ranges: Integrated Difference and Performance Analysis of the Loran System

doi:10.3390/s20164436

	High-Accuracy Positioning Based on Pseudo-Ranges: Integrated Difference and Performance Analysis of the Loran System
	Yan, Baorong; Li, Yun; Guo, Wei; Hua, Yu
刊名	SENSORS
	2020-08-01
卷号	20 期号:16 页码:15
关键词	Loran position geometrical dilution of precision accuracy difference method
DOI	10.3390/s20164436
英文摘要	The Long Range Navigation (Loran) system as a backup of the Global Navigation Satellite System (GNSS) is a good choice. The dominant deterioration factors of position accuracy are the pseudo-range measurement errors and the geometric dilution of precision (GDOP). This paper focuses on the algorithm integrated difference with pseudo-ranges to improve the position accuracy. Firstly, the theoretical prediction of propagation delay and raw measurement are compared. The results show that the measured pseudo-range consists of a constant term and a temporal term, which reflect the propagation situation along the true path. Secondly, a position solution algorithm based on a pseudo-range and difference is presented, exceeding the limit of a single chain. Finally, some simulation tests are implemented utilizing the new proposed position algorithm to verify the differential performance. This method can reduce the GDOP conveniently through increasing the number of transmitters. In view of the amplitude and characteristics of errors in measurement, systematic error and random noise are distinguished and discussed. The absolute accuracy responds to the pseudo-range bias that is different from geometric distance and repeatable accuracy is mainly influenced by random noise. The difference method can improve the absolute accuracy via the correction degree without changing the geometry of the transmitters.
资助项目	Natural Science Foundation of China[11803040] ; Frontier Science of the Chinese Academy of Sciences[QYZDJ-SSW-JSC034]
WOS关键词	NAVIGATION
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000564857300001
资助机构	Natural Science Foundation of China ; Natural Science Foundation of China ; Frontier Science of the Chinese Academy of Sciences ; Frontier Science of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Frontier Science of the Chinese Academy of Sciences ; Frontier Science of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Frontier Science of the Chinese Academy of Sciences ; Frontier Science of the Chinese Academy of Sciences ; Natural Science Foundation of China ; Natural Science Foundation of China ; Frontier Science of the Chinese Academy of Sciences ; Frontier Science of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://210.72.145.45/handle/361003/9386]
专题	中国科学院国家授时中心
通讯作者	Yan, Baorong
作者单位	Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China
推荐引用方式 GB/T 7714	Yan, Baorong,Li, Yun,Guo, Wei,et al. High-Accuracy Positioning Based on Pseudo-Ranges: Integrated Difference and Performance Analysis of the Loran System[J]. SENSORS,2020,20(16):15.
APA	Yan, Baorong,Li, Yun,Guo, Wei,&Hua, Yu.(2020).High-Accuracy Positioning Based on Pseudo-Ranges: Integrated Difference and Performance Analysis of the Loran System.SENSORS,20(16),15.
MLA	Yan, Baorong,et al."High-Accuracy Positioning Based on Pseudo-Ranges: Integrated Difference and Performance Analysis of the Loran System".SENSORS 20.16(2020):15.