基于高阶叠层矩量法分析理想导体缝隙的散射特性

The scattering characteristic of slot in a perfect conductor plant based on higher order hierarchical MOM

利用等效原理和Bab inet原理得到无限大理想导体缝隙的磁场积分方程.根据高阶矩量法的基本原理,对缝隙表面进行离散,利用高斯积分求得缝隙的等效磁流和散射特性.文中定义了相对尺寸s(s=h/λ),通过分析,当s不变时,缝隙的等效磁流不变,其RCS(雷达散射截面)也只是改变了振幅,变化的趋势都相同.且当s变大时,缝隙的等效磁流幅值变小,RCS的变化更频繁.

Both the equivalent magnetic current method and the theory of Babinet were used to the integral equation of magnetic field, while wave was transmitting along a wall of a perfect conductor plant with a slit. On the basis of higher order MOM,scattering the surface of the slot, and using the method of Gauss for solving the integral equation of magnetic field . At last , we could get hold of the equivalent magnetic current and scattering characteristic . Relative size was defined. Through analyzing, when s was constant, the equivalent magnetic current was invariability and RCS （Radar Cross-Section）amplitude was only changed, its trend was variability. Along with increasing s, amplitude of the equivalent magnetic current diminution, RCS changed more acuity.