Atmospheric density determination using high-accuracy satellite GPS data

	Atmospheric density determination using high-accuracy satellite GPS data
	Ren, TingLing; Miao, Juan; Liu, SiQing; Ren, TingLing (rentl@nssc.ac.cn)
刊名	Science China Technological Sciences
	2018
卷号	61 期号:2 页码:204-211
ISSN号	1674-7321
英文摘要	Atmospheric drag is the main source of error in the determination and prediction of the orbit of low Earth orbit (LEO) satellites; however, empirical models that are used to account for this often have density errors of around 15%–30%. Atmospheric density determination has thus become an important topic for researchers. Based on the relationship between the atmospheric drag force and the decay of the semi-major axis of the orbit, we derived atmospheric density along the trajectory of challenging mini-satellite payload (CHAMP) satellite with its rapid science orbit (RSO) data. Three primary parameters—the ratio of cross-sectional area to mass, the drag coefficient, and the decay of the semi-major axis caused by atmospheric drag—were calculated. We also analyse the source of the error and made a comparison between the GPS-derived and reference density. The result for December 2, 2008, showed that the mean error of the GPS-derived density could be decreased from 29.21% to 9.20%, if the time span adopted for the process of computation was increased from 10 min to 50 min. The result for the entire month of December indicated that a density precision of 10% could be achieved, when the time span meets the condition that the amplitude of the decay of the semi-major axis is much greater than its standard deviation. © 2018, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/6184]
专题	国家空间科学中心_空间环境部
通讯作者	Ren, TingLing (rentl@nssc.ac.cn)
推荐引用方式 GB/T 7714	Ren, TingLing,Miao, Juan,Liu, SiQing,et al. Atmospheric density determination using high-accuracy satellite GPS data[J]. Science China Technological Sciences,2018,61(2):204-211.
APA	Ren, TingLing,Miao, Juan,Liu, SiQing,&Ren, TingLing .(2018).Atmospheric density determination using high-accuracy satellite GPS data.Science China Technological Sciences,61(2),204-211.
MLA	Ren, TingLing,et al."Atmospheric density determination using high-accuracy satellite GPS data".Science China Technological Sciences 61.2(2018):204-211.