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SNR periodical variation of Chang'E-3 spacecraft orbiting the Moon

文献类型：期刊论文

作者He Qingbao; Liu Qinghui; Li Peijia; Noriyuki, Kawaguchi; Wu Yajun; Zheng Xin; Zhang Juan; Xu Zhijun
刊名CHINESE JOURNAL OF AERONAUTICS
出版日期2016-04-01
卷号29期号:2页码:470-478
关键词2 Bits Quantization Elevation Angle Moon Radiation Snr Periodical Variation Vlbi
ISSN号1000-9361
DOI10.1016/j.cja.2016.01.006
英文摘要Chang'E-3 spacecraft was orbiting the Moon from December 6-14, 2013, and very long baseline interferometry (VLBI) observations were performed to improve the accuracy of its orbit determination. In the process of recording VLBI raw data, 2 bits quantization was implemented. Interesting phenomenon was that signal-to-noise ratio (SNR) of each VLBI station experienced periodical change and had large variation on amplitude while in the Moon's orbit, whereas SNR kept in a stable level after Chang'E-3 landed on the Moon. Influence of varying elevation angle on SNR was analyzed and compensation of 2 bits quantization harmonics to SNR calculation was investigated. Most importantly, telescope system noise temperature increase caused by the Moon was computed along the time of Chang'E-3 orbiting the Moon, and well matched SNR changing trend in terms of correlation coefficients. (C) 2016 Chinese Society of Aeronautics and Astronautics. Published by Elsevier Ltd.
WOS研究方向Engineering
语种英语
WOS记录号WOS:000375861300017
出版者ELSEVIER SCIENCE INC
源URL[http://119.78.226.72/handle/331011/32825]  
专题中国科学院上海天文台
通讯作者He Qingbao
作者单位Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 He Qingbao,Liu Qinghui,Li Peijia,et al. SNR periodical variation of Chang'E-3 spacecraft orbiting the Moon[J]. CHINESE JOURNAL OF AERONAUTICS,2016,29(2):470-478.
APA He Qingbao.,Liu Qinghui.,Li Peijia.,Noriyuki, Kawaguchi.,Wu Yajun.,...&Xu Zhijun.(2016).SNR periodical variation of Chang'E-3 spacecraft orbiting the Moon.CHINESE JOURNAL OF AERONAUTICS,29(2),470-478.
MLA He Qingbao,et al."SNR periodical variation of Chang'E-3 spacecraft orbiting the Moon".CHINESE JOURNAL OF AERONAUTICS 29.2(2016):470-478.

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来源：上海天文台

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