涂覆型圆柱的散射矩阵及极化分析

A New Algorithm for Calculating Poles of A Scattering Object

利用物理光学法及平面板块元法，对涂覆型圆柱的顶面和侧面的散射矩阵进行了推导和计算；利用一致性几何绕射理论分析了曲棱的一阶绕射场的散射矩阵；指出文献中的错误，然后通过散射矩阵分析目标散射场的极化特性参数和最优极化，给出了具体算例。

The natural resonances(poles) of a scattering object are important for the target identification.A new method is proposed in this paper to calculate poles,which points out that the zeros of the fast Fourier transform of the integral kernel function are the poles of the scattering object.As an example,the poles of a thin wire conductor are obtained with high precision in very short time by using this method.