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  • 标题:Medium-scale traveling ionospheric disturbances by three-dimensional ionospheric GPS tomography
  • 本地全文:下载
  • 作者:C. H. Chen ; A. Saito ; C. H. Lin
  • 期刊名称:Earth, Planets and Space
  • 电子版ISSN:1880-5981
  • 出版年度:2016
  • 卷号:68
  • 期号:1
  • 页码:1-9
  • DOI:10.1186/s40623-016-0412-6
  • 出版社:Springer Verlag
  • 摘要:In this study, we develop a three-dimensional ionospheric tomography with the ground-based global position system (GPS) total electron content observations.Because of the geometric limitation of GPS observation path, it is difficult to solve the ill-posed inverse problem for the ionospheric electron density.Different from methods given by pervious studies, we consider an algorithm combining the least-square method with a constraint condition, in which the gradient of electron density tends to be smooth in the horizontal direction and steep in the vicinity of the ionospheric F2 peak.This algorithm is designed to be independent of any ionospheric or plasmaspheric electron density models as the initial condition.An observation system simulation experiment method is applied to evaluate the performance of the GPS ionospheric tomography in detecting ionospheric electron density perturbation at the scale size of around 200 km in wavelength, such as the medium-scale traveling ionospheric disturbances.
  • 关键词:Global Position System; Total Electron Content; Ionospheric Electron Density; Total Electron Content Data; Multiplicative Algebraic Reconstruction Technique
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