Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Inversion of the Earth's plasmaspheric density distribution from EUV images with genetic algorithm | |
其他题名 | 论文其他题名 |
He F.; Zhang X. X.; Chen B.; Fok M. C. | |
2012 | |
发表期刊 | Chinese Journal of Geophysics-Chinese Edition |
ISSN | 0001-5733 |
卷号 | 55期号:1页码:29-35 |
摘要 | The principles for inversion of plasmaspheric He+ density from the extreme ultraviolet images of the Earth's plasmasphere with one-dimensional genetic algorithm are introduced. The three-dimensional problem is transformed to one-dimensional case through flux tube approximation and dipole magnetic field approximation. With the weight matrix, the extreme ultraviolet intensity integration equation is discretized into linear equation systems, then the one-dimensional real-coded genetic algorithm is used to calculate the equatorial plane plasmaspheric He+ density, and finally the three-dimensional density is obtained by magnetic field line tracing. The density and intensity simulated by the dynamic global core plasma model are used as the primary input parameters, and the corresponding density distribution is determined through genetic iterations. The results show that the relative density error is less than 8% and the relative intensity error tends to be zero, which proves that our algorithm is effective and feasible. Investigations in this work will provide basis for the inversion of the moon-based EUV images in the Second Phase of Chinese Lunar Exploration Program. |
收录类别 | SCI |
语种 | 中文 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/25521 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | He F.,Zhang X. X.,Chen B.,et al. Inversion of the Earth's plasmaspheric density distribution from EUV images with genetic algorithm[J]. Chinese Journal of Geophysics-Chinese Edition,2012,55(1):29-35. |
APA | He F.,Zhang X. X.,Chen B.,&Fok M. C..(2012).Inversion of the Earth's plasmaspheric density distribution from EUV images with genetic algorithm.Chinese Journal of Geophysics-Chinese Edition,55(1),29-35. |
MLA | He F.,et al."Inversion of the Earth's plasmaspheric density distribution from EUV images with genetic algorithm".Chinese Journal of Geophysics-Chinese Edition 55.1(2012):29-35. |
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