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	Accuracy analysis of GPS broadcast ephemeris in the 2036th GPS week
	Ma,Lihua; Wang,Xiaolan; Li,Shengming
刊名	IOP Conference Series: Materials Science and Engineering
	2019-10-01
卷号	631期号:4
ISSN号	1757-8981
DOI	10.1088/1757-899X/631/4/042013
英文摘要	Abstract Satellite orbit error is one of main sources in Global Positioning System (GPS) receiver positioning error. Using broadcast ephemeris in navigation message, the receiver can calculate spatial position of GPS satellites, then combine pseudorange measurements and achieve positioning solution. In this work, taking broadcast ephemeris in the 2036th GPS week as an example, orbital position of the satellite with the pseudo-random-noise (PRN) code 4 is calculated. Furthermore, using GPS precision ephemeris as a reference, orbital error of the broadcast ephemeris for the PRN 4 satellite is investigated. The results show that the maximum difference of the satellite in three directions is 36 meters, 57 meters and 39 meters, respectively. The three-dimension distance deviating from precision ephemeris is at most 61 meters. The maximum deviation occurs only during certain time periods in the whole GPS week.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:1757-8981-631-4-042013
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/28640]
专题	中国科学院国家天文台
作者单位	National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China
推荐引用方式 GB/T 7714	Ma,Lihua,Wang,Xiaolan,Li,Shengming. Accuracy analysis of GPS broadcast ephemeris in the 2036th GPS week[J]. IOP Conference Series: Materials Science and Engineering,2019,631(4).
APA	Ma,Lihua,Wang,Xiaolan,&Li,Shengming.(2019).Accuracy analysis of GPS broadcast ephemeris in the 2036th GPS week.IOP Conference Series: Materials Science and Engineering,631(4).
MLA	Ma,Lihua,et al."Accuracy analysis of GPS broadcast ephemeris in the 2036th GPS week".IOP Conference Series: Materials Science and Engineering 631.4(2019).

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