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Deduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique-Incomplete projection data
Huang Ya; Xu Rong-Lan; Shen Chao; Li Liang; Chen Zhi-Qiang; 北京8701信箱
Department空间科学部
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2012
Volume55Issue:4Pages:1071-1077
ISSN0001-5733
Language中文
KeywordDensity Of The Earth's Plasmasphere Incomplete Projection Data Total Variation Iterative Algorithm
AbstractIn 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.
Indexed BySCI
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3261
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
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,&北京8701信箱.(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.
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