半空间电大导体目标散射的高频分析方法

High-Frequency Analysis on Scattering from Conductive Targets with Electrically Large Size in Half Space

该文研究了半空间电大尺寸导体目标散射的高频求解方法。将半空间并矢格林函数引入物理光学方法中,对半空间环境影响进行考虑,推导出半空间物理光学分析方法,并结合图形电磁学(GRECO),对半空间电大导体目标进行消隐判断,提取像素面元法矢量和深度缓存等有效信息,快速有效地计算了半空间导体目标的雷达散射截面(RCS),数值结果证明该文方法的有效性和准确性。

The high-frequency method for solving the scattering of electrically large conductive targets in half space is presented in this paper. Consider the environmental impact of half-space, the half-space physical optics integral equation is deduced by introducing the half-space Green＇s function into the Physical Optics （PO） method. Combined with the GRaphical-Electromagnetic COmputing （GRECO） method, the shadow regions are eliminated quickly and the geometry information is attained by reading the color and depths of each pixel. The Radar Cross Section （RCS） of conductive targets can be exactly calculated in half space. The numerical results show that this method is efficient and accurate.