Deduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique-Incomplete projection data
文献类型：期刊论文
| 作者 | Huang Ya ; Xu Rong-Lan ; Shen Chao ; Li Liang ; Chen Zhi-Qiang |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2012 |
| 卷号 | 55期号:4页码:1071-1077 |
| 关键词 | Density of the Earth's plasmasphere Incomplete projection data Total variation Iterative algorithm |
| ISSN号 | 0001-5733 |
| 通讯作者 | 北京8701信箱 |
| 中文摘要 | In deduction of the global density of Earth plasmasphere from its column density by using Computer Tomography (CT) technique, one of the main issues is that the projection data is not theoretically sufficient for exact image reconstruction. We develop an improved iterative reconstruction algorithm based on the minimization of the image total variation. The high quality image is achieved by using this method to reconstruct the meridian plane, which has the most various insufficient data problems. Their reconstruction quality has been analyzed through the correlation coefficient between the Phantom Diagram and the reconstruction results. To match IMAGE satellite, we focus on the limited angular range of 90 degrees. For this angle, the value of this method is 0.760 while iterative reconstruction algorithm method is only 0.696. The result reveals that the method of iterative reconstruction algorithm based on the minimization of the image total variation is more efficient when the Phantom Diagram includes earth's shelter and limited angular range. |
| 学科主题 | 空间物理 |
| 收录类别 | SCI |
| 语种 | 中文 |
| 公开日期 | 2014-12-15 |
| 源URL | [http://ir.nssc.ac.cn/handle/122/3261]  |
| 专题 | 国家空间科学中心_空间科学部 |
| 推荐引用方式 GB/T 7714 | Huang Ya,Xu Rong-Lan,Shen Chao,et al. Deduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique-Incomplete projection data[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2012,55(4):1071-1077. |
| APA | Huang Ya,Xu Rong-Lan,Shen Chao,Li Liang,&Chen Zhi-Qiang.(2012).Deduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique-Incomplete projection data.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,55(4),1071-1077. |
| MLA | Huang Ya,et al."Deduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique-Incomplete projection data".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 55.4(2012):1071-1077. |
入库方式： OAI收割
来源：国家空间科学中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。