计算物理 ›› 2010, Vol. 27 ›› Issue (6): 877-882.

• 研究论文 • 上一篇    下一篇

等离子体涂覆目标散射特性SARC FDTD方法分析

张玉强1, 葛德彪2   

  1. 1. 延安大学物理与电子信息学院, 陕西 延安 716000;
    2. 西安电子科技大学理学院物理系, 陕西 西安 710071
  • 收稿日期:2009-09-28 修回日期:2010-01-28 出版日期:2010-11-25 发布日期:2010-11-25
  • 作者简介:张玉强(1970-).Shannxi,Yanchang,Assoeiate professor,Doctor.Major in electromagnetic scattering and inverse scattering,computational electromagnetics and gutennas.
  • 基金资助:
    Supported by the National Science Foundation of China (Grant No.60871071)

SARC-FDTD Method for Electromagnetic Scattering by an Object Coated with Plasma

ZHANG Yuqiang1, GE Debiao2   

  1. 1. School of Physics & Electronic Information, Yan'an University, Yan'an 716000, China;
    2. Department of Physics, Xidian University, Xi'an 710071, China
  • Received:2009-09-28 Revised:2010-01-28 Online:2010-11-25 Published:2010-11-25
  • Supported by:
    Supported by the National Science Foundation of China (Grant No.60871071)

摘要: 基于数字信号处理中的半解析递归卷积(SARC)算法,提出一种用于色散介质电磁特性分析的通用递归卷积时域有限差分方法(SARC FDTD),不仅具有绝对稳定性和高精度、低内存、高效率等优点,而且对于常见色散介质模型,具有统一的形式,计算时只需给出色散介质模型的极点和对应系数,使用方便,通用性好.通过算例验证了方法的有效性,并对有等离子体存在的目标电磁散射截面(RCS)进行了计算和分析.

关键词: 时域有限差分, 色散介质, 递归卷积, 等离子体

Abstract: A novel finite-difference time-domain(FDTD) method combined with semi-analytical recursive convolution (SARC) algorithm in digital signal processing(DSP) techniques is presented to analyze electromagnetic scattering by dispersive media.Absolute stability,high accuracy,less storage and high effectiveness are retained while a unified update formulation is possessed.It can be applied to analysis of general dispersive media provided that the poles and corresponding coefficients in dispersive medium are given.Finally,the proposed SARC-FDTD approach is validated.RCS of an object coated with plasma are calculated.

Key words: finite difference time-domain, dispersive media, recursive convolution, plasma

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