带有填充各向异性介质凹槽的金属目标电磁散射的FDTD法分析  

Analysis of Plane Wave Scattering by Slots on Conducting Targets Loaded with Anisotropic Material Using FDTD Method

作　　者：胡炜[1] 周乐柱[1] 祝西里[1] 李明之[1] 

机构地区：[1]北京大学信息科学与技术学院电子学系,北京100871

出　　处：《电子学报》2004年第6期1005-1008,共4页Acta Electronica Sinica

基　　金：教育部博士点基金 (No .2 0 0 1 0 0 0 1 0 37)

摘　　要：本文利用各向异性时域有限差分法 (FDTD)分析填充各向异性介质凹槽的金属目标的电磁散射 .就一种特定的典型金属目标模型 ,详细计算分析了开槽位置、宽度和深度以及填充材料对其电磁散射特性的影响 ,计算结果显示在目标的特定部位开适当宽度和深度的槽并填充负单轴各向异性介质能显著降低目标的后向雷达散射截面(RCS) .The Finite-Difference Time Domain (FDTD) algorithms of anisotropic material was used to analyze the plane wave scattering by slots on the conducting target loaded with anisotropic material. This paper calculated the impact of the position, width and depth of the slot and the material filled in the slot on the scattering characteristics of the specific conducting target. Numerical results showed that the backscattering can be greatly reduced by using negative uniaxial anisotropic media to fill in the slots of proper width and depth at the specific position of the model.

关 键 词：各向异性 时域有限差分 凹槽 雷达散射截面 电磁散射 

分 类 号：O441.4[理学—电磁学]