三维电小尺寸目标群的电磁散射分析(英文)

Analysis of EM Scattering by Electrically Small 3-D Multi-conducting Bodies

利用电场积分方程(EFIE)的矩量法分析了三维电小尺寸目标群的电磁散射问题.目标群表面采用三角形面元进行剖分,面元上的电流分布用子域基函数表示,用伽略金法将电场积分方程转化为矩阵方程求解电流系数,数值计算了目标群的雷达散射截面(RCS)随入射角度的变化,结果显示了目标群的RCS不仅与目标群的种类、目标群的分布有关,还与入射波的方向和极化方向有关.

EFIE（electric field integral equation） in combination with the moment method is used to analyze the electromagnetic（EM） scattering by electrically small three dimensional （3-D） multi-conducting bodies. The surfaces of the multi-conducting bodies are partitioned into triangular cells, the current distribution on the patches is represented by sub-domain type basis function, the EFIE is translated into matrix equation by the Galerkin method, and then the current coefficient is obtained. Numerical results of multi-conducting bodies varying with the incident angles show that the distribution of multi-conducting bodies, the number of multi-conducting, the incident azimuth and the polarized azimuth all affect radar cross section （RCS）.