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 |
| 卷号 | 29期号:2页码:470 |
| 关键词 | MISSION 2 bits quantization Elevation angle Moon radiation SNR periodical variation VLBI |
| ISSN号 | 1000-9361 |
| 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. |
| 资助项目 | [National Natural Science Foundation of China] |
| 语种 | 英语 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/62752]  |
| 专题 | 中国科学院国家天文台 |
| 作者单位 | 中国科学院国家天文台 |
| 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. |
| 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. |
| MLA | He Qingbao,et al."SNR periodical variation of Chang'E-3 spacecraft orbiting the Moon".CHINESE JOURNAL OF AERONAUTICS 29.2(2016):470. |
入库方式： OAI收割
来源：国家天文台
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