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《Chinese Journal of Geophysics》 2012-01
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Inversion of the Earth's plasmaspheric density distribution from EUV images with genetic algorithm

HE Fei1,ZHANG Xiao-Xin2*,CHEN Bo1,FOK Mei-Ching3 1 Changchun Institution of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China 2 National Center for Space Weather,China Meteorological Administration,Beijing 100081,China 3 NASA Goddard Space Flight Center,Greenbelt,MD 20771,USA  
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.
【Fund】: 国家自然科学基金(40890160 10878004 40974093);; 国家重点基础研究发展计划“973计划”(2011CB811400);; 公益性行业专项(GYHY200806024)联合资助
【CateGory Index】: P354
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 HE Fei1,2,CHEN Bo1,ZHANG Xiao-xin3(1.Changchun Institution of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100039,China;3.National Center for Space Weather,China Meteorological Administration,Beijing 100081,China);Moon-based imaging of earth plasmaspheric extreme ultraviolet radiation[J];Optics and Precision Engineering;2010-12
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【Co-citations】
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1 Liu Wenguang Wang Xiaodong(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China);Design and implementation on information processing system of moon-based extreme ultraviolet photon-counting imaging detector[A];[C];2011
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1 HE Fei1,2,CHEN Bo1,ZHANG Xiao-xin3(1.Changchun Institution of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100039,China;3.National Center for Space Weather,China Meteorological Administration,Beijing 100081,China);Moon-based imaging of earth plasmaspheric extreme ultraviolet radiation[J];Optics and Precision Engineering;2010-12
2 HE Fei1,4,ZHANG XiaoXin2,CHEN Bo1 & FOK Mei-Ching3 1 Changchun Institution of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;2 National Center for Space Weather,China Meteorological Administration,Beijing 100081,China;3 NASA Goddard Space Flight Center,Greenbelt,MD 20771,USA;4 Graduated School of Chinese Academy of Sciences,Beijing 100039,China;Calculation of the extreme ultraviolet radiation of the earth's plasmasphere[J];中国科学:技术科学(英文版);2010-01
3 NI Qi-liang,LIU Shi-jie,CHEN Bo (State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China);Investigation on extreme ultraviolet photon-counting imaging detector with position-sensitive anode[J];Chinese Journal of Optics and Applied Optics;2009-01
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