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题名: Atmospheric density determination using high-accuracy satellite GPS data
作者: Ren, TingLing; Miao, Juan; Liu, SiQing
作者部门: 空间环境部
通讯作者: Ren, TingLing (rentl@nssc.ac.cn)
刊名: Science China Technological Sciences
ISSN号: 1674-7321
出版日期: 2018
卷号: 61, 期号:2, 页码:204-211
收录类别: SCI ; EI
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
URI标识: http://ir.nssc.ac.cn/handle/122/6184
Appears in Collections:空间环境部_期刊论文

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Recommended Citation:
Ren, TingLing,Miao, Juan,Liu, SiQing. Atmospheric density determination using high-accuracy satellite GPS data[J]. Science China Technological Sciences,2018,61(2):204-211.
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