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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Three-Dimensional Scattering and Inverse Scattering From a Disturbed Region in Planarly Layered Cold Unmagnetized Plasma Media
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Three-Dimensional Scattering and Inverse Scattering From a Disturbed Region in Planarly Layered Cold Unmagnetized Plasma Media

机译:平面分层冷非磁化等离子体介质中受扰区域的三维散射和逆散射

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摘要

We apply the forward scattering and inverse scattering algorithms to a cold unmagnetized plasma region within a multilayered background medium. Each layer has a different plasma frequency. The disturbed region in the plasma has an arbitrary shape, so it is an electromagnetic wave scatterer and can exist in any layer. The stabilized biconjugate-gradient fast Fourier transform (BCGS-FFT) algorithm is used to compute the scattered field. The scattered fields calculated by the BCGS-FFT yield excellent agreement with simulated results from the commercial software. In the inverse scattering process, the variational Born iterative method is used to reconstruct the relative permittivity, and thus the plasma frequency of the disturbed region. Multiple frequencies are adopted to determine the dispersive property of the plasma medium.
机译:我们将正向散射和反向散射算法应用于多层背景介质中的冷未磁化等离子体区域。每层具有不同的等离子体频率。等离子体中的受扰区域具有任意形状,因此它是电磁波散射体,可以存在于任何层中。稳定的双共轭梯度快速傅立叶变换(BCGS-FFT)算法用于计算散射场。通过BCGS-FFT计算得到的散射场与商用软件的模拟结果非常吻合。在逆散射过程中,使用变分的Born迭代方法重建相对介电常数,从而重建受扰区域的等离子体频率。采用多个频率来确定等离子体介质的分散特性。

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  • 来源
    《Geoscience and Remote Sensing Letters, IEEE》 |2017年第4期|559-563|共5页
  • 作者单位

    Department of Electronic Science, Institute of Electromagnetics and Acoustics, Xiamen University, Fujian, China;

    Department of Electronic Science, Institute of Electromagnetics and Acoustics, Xiamen University, Fujian, China;

    Department of Electronic Science, Institute of Electromagnetics and Acoustics, Xiamen University, Fujian, China;

    Department of Electronic Science, Institute of Electromagnetics and Acoustics, Xiamen University, Fujian, China;

    Department of Electronic Science, Institute of Electromagnetics and Acoustics, Xiamen University, Fujian, China;

    Department of Electrical and Computer Engineering, Duke University, Durham, NC, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Permittivity; Scattering; Inverse problems; Media; Mathematical model; Plasma properties;

    机译:介电常数;散射;反问题;介质;数学模型;等离子性质;

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