A study of the plasmasphere density distribution using computed tomography methods from the EUV radiation data

被引：12
|
作者：
Li, Liang [1 ,2 ]
Chen, Zhiqiang [1 ,2 ]
Xu, Ronglan [3 ]
Kang, Kejun [1 ,2 ]
Zhang, Li [1 ,2 ]
Xing Yuxiang [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Minist Educ, Key Lab Particle & Radiat Imaging, Beijing 100084, Peoples R China
[3] Chinese Acad Sci, Ctr Space & Appl Res, Beijing, Peoples R China
来源：
ADVANCES IN SPACE RESEARCH | 2009年 / 43卷 / 07期
关键词：
Computed tomography; Plasmasphere; Extreme ultraviolet (EUV); Reconstruction;
D O I：
10.1016/j.asr.2008.10.013
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
In this paper. we introduce it new topic for imaging plasmasphere density with CT techniques. Both parallel-beam and fail-beam reconstruction formulas are derived with a special weighting function. Different from the traditional X-ray CT, the extreme ultraviolet (EUV) radiation may be totally absorbed by the Earth. Only the portion between the Earth and the detector enters the EUV sensor and be measured. The key step in our derivation is to remove the complete absorption effect with a specific weighting function. Computer-simulation studies are present to verify our formulas for the plasmasphere density. (C) 2008 COSPAR. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1143 / 1147
页数：5
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