The Calculation of EM Scattering by Buried Objects in Dispersive Media Through FD-TD Method

方广有; 张忠治; 汪文秉

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The Calculation of EM Scattering by Buried Objects in Dispersive Media Through FD-TD Method

更新时间：2025-12-08

- The Calculation of EM Scattering by Buried Objects in Dispersive Media Through FD-TD Method
- Acta Electronica Sinica Issue 6, (1995)
- 作者机构：
  
  1. 中国电波传播研究所
  2. 西安交通大学
  3. 中国电波传播研究所西安交通大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN011
- Published：1995
- 稿件说明：
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[1]方广有,张忠治,汪文秉.FD－TD法计算色散媒质中埋入异常体的电磁散射[J].电子学报,1995(06):34-38.

方广有, 张忠治, 汪文秉. The Calculation of EM Scattering by Buried Objects in Dispersive Media Through FD-TD Method[J]. Acta Electronica Sinica, 1995, (6).
[1]方广有,张忠治,汪文秉.FD－TD法计算色散媒质中埋入异常体的电磁散射[J].电子学报,1995(06):34-38. DOI：

方广有, 张忠治, 汪文秉. The Calculation of EM Scattering by Buried Objects in Dispersive Media Through FD-TD Method[J]. Acta Electronica Sinica, 1995, (6). DOI：

摘要

本文论述了ＦＤ－ＴＤ法用于计算地下浅层目标的电磁散射问题。推出了Ｄｅｂｙｅ型色散媒质中ＦＤ－ＴＤ法的迭代公式和吸收边界条件。通过将ＦＤ－ＴＤ法计算的结果与其它结果相比较，证实了该方法计算有耗媒质中电磁场问题的有效性。对瞬态脉冲在色散媒质中的传播特性进行了讨论。分别计算了典型地下目标的散射波形和波形堆积图。

Abstract

The electromagnetic scattering by buried objects in dispersive media is calculated by FD-TD method. The FD-TD formula and the absorbing boundary condition in Debye dispersive media are deduced

respectively. The validity of this method in lossy media is verified through comparing the FD-TD’s result with other one. The propagation of transient pulses in dispersive media is studied in detail. The scattering pulses and the wiggle traces are given for several typical buried objects.

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