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应用科学学报 ›› 1999, Vol. 17 ›› Issue (2): 169-176.

• 论文 • 上一篇    下一篇

二维电大尺寸导体群目标的电磁散射特性分析

陈晓光, 金亚秋   

  1. 复旦大学
  • 收稿日期:1998-01-13 修回日期:1998-05-21 出版日期:1999-06-30 发布日期:1999-06-30
  • 基金资助:
    国家自然科学基金69771007,国家教委博士点基金,上海科技研究和发展基金资助项目

Electromagnetic Scattering From Two-Dimensional Electrically Large Multi-Conducting Bodies

CHEN XIAOGUANG, JIN YAQIU   

  1. Wave Scattering and Remote Sensing Center, and Department of Electrical Engineering, Fudan University, Shanghai 200433
  • Received:1998-01-13 Revised:1998-05-21 Online:1999-06-30 Published:1999-06-30

PDF

82

被引次数

8

摘要： 提出用二维快速多极子算法(FMM)研究多个电大尺寸圆柱导体电磁散射的数值模拟,简明地讨论了由矩量法(MOM)发展演变成的FMM方法.这种快速数值解法,无论在计算速度以及对计算机的存储要求,远优于通常的MOM,而且FMM算法更能适用于求解电大尺寸目标群(目标个数≥4)的电磁散射问题.最后用FMM方法给出了四个导体群目标表面电流密度分布,以及远场的雷达散射截面(RCS)特性;讨论了群导体柱上表面电流密度与RCS随它们之间距离的变化规律.

关键词: 群目标, 矩量法, 电磁散射, 快速多极子方法

Abstract: Numerical simulation of electromagnetic scattering from electrically large multiconducting bodies has been implemented by using the exact fast multipole method (FMM). Scattering cross sections of four clustered, conducting cylinders and the distribution of electricity on the surfaces are calculated by the FMM. The calculation speed of FMM is much superior to the conventional MOM's. The functional dependence of RCS and surface current distribution upon the distance between the cylinders, and other parameters are numerically discussed.

Key words: electromagnetic scattering, MOM, fast multipole method, multi objects