Geocentric position preliminary detection from the extreme ultraviolet images of Chang'E-3
文献类型：期刊论文
| 作者 | Zheng, Chen1,2; Li, Wenxiao2 ; Ping, Jinsong2; Wang, Mingyuan2
|
| 刊名 | Astrophysics and Space Science
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 358期号:2页码:28 |
| 关键词 | Euvc Image Chang'e 3 Geocentric Position Detection |
| ISSN号 | 0004-640X |
| DOI | 10.1007/s10509-015-2427-z |
| 文献子类 | Article |
| 英文摘要 | An Extreme ultraviolet (EUV) Camera was installed onboard the Chinese lunar surface landing mission, the Chang'E-3 lander, as a useful method to observe the Earth plasmasphere. This EUV optical payload obtained more than 600 moon-based Earth plasmasphere images since December 14, 2013. However, due to errors of unknown size and origin in the platform attitude control of the lander and in the EUV telescope pointing control during the mission operating periods, the geocentric coordinates in these EUV images are not fixed in the same position of CCD pixel. Before adequately calibrating, these positioning offsets will introduce extra errors into the analysis of the plasmaspheric structure. With only a little insufficient telemetry information, an effective calibrating method of circle-based differential algorithm is suggested and demonstrated, for automatically and precisely detecting the geocentric position in each EUV image of Chang'E-3 mission. In each EUV image, the tested method uses the outline of a circle as the basic unit to capture the contour for the bright region based on the spectral characteristic. Then, the center of the extracted circle is adopted as the geocentric position for the image. The preliminary analysis shows that this method can effectively detect the geocentric position being always consistent with the recognition result by the basic hand labor method. It is found that the radius of the circles varies from month to month from December, 2013 to May, 2014. The monthly averages of radius show relative notable positive correlation and negative correlation with the changes of both Zenith angle of the Earth at the landing area of Chang'E-3 lander, and the Earth-moon distance, respectively. This method and results here will benefit the Chang'E-3 EUV study. |
| WOS关键词 | earths plasmasphere ; moon ; whistler ; camera ; knee |
| WOS研究方向 | Astronomy & Astrophysics |
| 项目编号 | Y422013V01-CE-3 ; 2015CB857101 ; 41301470 ; 41101425 ; 15A420001 |
| 语种 | 英语 |
| WOS记录号 | WOS:000359016500005 |
| 资助机构 | Chinese Academy of Sciences ; national key basic research and development plan ; National Natural Science Foundation of China ; key research of Henan provincial univeristies ; basic research funds for the Henan provincial universities |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/1616]  |
| 专题 | 新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 新疆天文台_射电天文研究室 |
| 通讯作者 | Zheng, Chen |
| 作者单位 | 1.School of Mathematics and Statistics, Henan University,Jinming Road, Kaifeng, China, 475000 2.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, China, 100012 |
| 推荐引用方式 GB/T 7714 | Zheng, Chen,Li, Wenxiao,Ping, Jinsong,et al. Geocentric position preliminary detection from the extreme ultraviolet images of Chang'E-3[J]. Astrophysics and Space Science,2015,358(2):28. |
| APA | Zheng, Chen,Li, Wenxiao,Ping, Jinsong,&Wang, Mingyuan.(2015).Geocentric position preliminary detection from the extreme ultraviolet images of Chang'E-3.Astrophysics and Space Science,358(2),28. |
| MLA | Zheng, Chen,et al."Geocentric position preliminary detection from the extreme ultraviolet images of Chang'E-3".Astrophysics and Space Science 358.2(2015):28. |
入库方式： OAI收割
来源：新疆天文台
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