摘要
本文基于渐近波形估计(AWE)技术和矩量法(MOM)快速预测任意形状导电柱体(PEC)的单站RCS 方向图.首先采用矩量法求解导体柱的电场积分方程，得到导体柱在某一给定方向入射波照 射下的表面电流的低阶矩量，然后利用AWE技术求出在任意方向入射波照射下用有理分式函 数表示的表面电流，进而计算出RCS方向图.计算结果表明AWE完全能逼近MOM精确计算的曲线 ，同时在计算速度上可加快几十倍.
The method of moments (MOM) is conjunction with the asymptotic waveform evaluation (AWE) technique is applied to predict the mono-static radar cross section (RCS) pattern of an arbitrarily shaped two-dimensional (2D) perfect electric conductor (PEC) body. The electric field integral equation (EFIE) of a 2D PEC body irradiated at a given direction by radar electromagnetic wave is solved using MOM to obtain the low order moments of the surface current on the PEC body. In the AWE technique, the surface current is obtained at any angle within the angular range expressed as a rational function, which is in turn used to calculate RCS of the 2D PEC body. It is observed that AWE could result in considerable CPU time saving.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2001年第9期1198-1201,共4页
Acta Electronica Sinica
基金
国家杰出青年基金的资助项目(No.69625102)
关键词
矩量法
方向图
渐近波形估计技术
雷达散射截面
二维导体柱
Calculations
Directional patterns (antenna)
Electric conductors
Electric fields
Electromagnetic wave scattering
Estimation
Integral equations
Method of moments
Two dimensional
