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目标的雷达散射截面 (RCS)与照射频率和照射角有关 .本文采用矩量法 (MOM)并结合渐近波形估计 (AWE)技术在频域和角度上预测了任意形状二维柱体的单站RCS .采用MOM法求解电场积分方程获取柱体的等效电流 .在AWE技术中 ,首先将等效电流在给定频率和角度处按双变量Taylor级数展开 ,然后使该级数与Pade逼近表示的有理分式函数匹配 ,最后利用该有理分式函数获取任意频率和角度处的等效电流 ,进而计算柱体的RCS .这种RCS的外推法至少有 2个明显的优点 :其一是能获得RCS的解析结果 ,其二是能降低计算时间 .
The radar cross section (RCS) of the target is related to the irradiation frequency and illumination angle.In this paper, the moment of arrival (MOM) and the asymptotic waveform estimation (AWE) Station RCS. The MOM method is used to solve the integral equation of the electric field to obtain the equivalent current of the cylinder. In AWE technology, the equivalent current is first expanded according to a bivariate Taylor series at a given frequency and angle, and then the series is compared with Pade Approximation to the rational representation of the rational function match, and finally use the rational fractional function to obtain the equivalent current at any frequency and angle, and then calculate the RCS cylinder.This extrapolation of RCS has at least 2 obvious advantages: its One is to get the result of RCS analysis, the other is to reduce the calculation time.