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中文摘要：
以计算介质粗糙面上目标后向散射为目的,提出一种高效的混合计算方法.该方法在单独处理粗糙面与目标方面与传统混合法一致,即使用基尔霍夫近似法（KA）处理粗糙面区域,使用矩量法（MoM）并结合多层快速多极子技术处理目标区域.实验结果表明,所提出的混合法与传统方法不同的是,根据大尺度光滑型介质粗糙面镜向散射最强的特点,在计算耦合场时只在粗糙面上截取一块区域进行计算,从而极大地减少了耦合场计算中所用内存与时间.
英文摘要：
A highly efficient hybrid method of the Kirchhoff approach（KA） and the method of moment（MoM） is proposed for calculating the backscattering monostatic radar cross section（RCS） of conducting objects above a dielectric rough surface.Similar to the conventional hybrid KA-MoM,the KA is used to calculate the scattering by the rough surface and the MoM is applied to calculate the scattering by the objects.The main difference between the proposed method and the conventional KA-MoM algorithm is that the size of the rough surface has been truncated when calculate the interactions between the objects and the rough surface is conducted,for depending on the specular reflection of the smooth surface.By executing the truncation,the memory and the computation time is significantly reduced.
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