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代数重建法反演环电流分布的初步结果
Alternative TitleNew Results of Algebraic Reconstruction Techniquesto Inverse Ring Current Ions Distribution
王馨悦; 刘振兴; 沈超; 路立; 北京8701信箱
Department空间天气学国家重点实验室
Source Publication空间科学学报
2007
Volume27Issue:2Pages:104-109
ISSN0254-6124
Language中文
Keyword环电流离子分布 高能中性原子
AbstractTC-2卫星携带了高能中性原子成像仪.在理论上可以根据对中性原子的探测通过反演获得磁层中环电流的空间分布.开发了一种新的反演技术和算法来反演环电流的分布.文中将层析成像技术引入反演环电流区离子分布,把磁层空间环电流区域划分为网格并依据层析成像常用的代数重建法反演环电流的分布.反演前后的环电流离子分布具有一致性,证实了这种反演方法的可行性.通过对比反演结果与初始分布,模型通过较少的假设和简单的步骤就可以获得全面的环电流信息.
Other AbstractEnergetic Neutral Atom (ENA) images obtained by the energetic Neutral Atom Detector Unit (NUADU) on board Chinese Double Star mission are used to simulate the changes in the ring current.Changes in the ring current are responsible for global decreases in the Earth surface magnetic field, which are known as geomagnetic storms. ENA imagers provide global pictures of the ring current ions in the space environment.A new technique and arithmetic is explored in this paper to inverse the ring current ions distribution.The technique of seismic tomograpy is introduced into our inversion. Based on the technique, the ring current region of magnetospheric space can be took into grids and use Algebraic Reconstruction Techniques to extract ion's flux distribution from the EN A image.The consistency inversion distribution with original one shows the feasibility of this technique. Comparing the original distribution with the inversion results, our arithmetic can obtain ring currents' global distribution information with fewer hypotheses and simpler procedures.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1345
Collection空间科学部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
王馨悦,刘振兴,沈超,等. 代数重建法反演环电流分布的初步结果[J]. 空间科学学报,2007,27(2):104-109.
APA 王馨悦,刘振兴,沈超,路立,&北京8701信箱.(2007).代数重建法反演环电流分布的初步结果.空间科学学报,27(2),104-109.
MLA 王馨悦,et al."代数重建法反演环电流分布的初步结果".空间科学学报 27.2(2007):104-109.
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