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提出一种在安装图形加速卡的高性能微机上实时计算复杂目标高频区雷达散射截面（ＲＣＳ）的方法。该方法利用了“图形电磁计算（ＧＲＥＣＯ）”的新技术。目标用Ｇ２Ｃａｔｍｕｌ－ｏｍ（Ｃ－Ｒ）几何样条模拟，由图形加速卡硬件完成遮挡、消隐运算，运用Ｐｈｏｎｇ光照模型着色渲染目标可见表面，应用物理光学（ＰＯ）、等效电流法（ＭＥＣ）、物理绕射理论（ＰＴＤ）及阻抗边界条件（ＩＢＣ）等方法计算目标高频区雷达散射截面（ＲＣＳ）。
A method for real-time calculation of radar cross section (RCS) of complex targets in high frequency area is proposed on a high-performance PC with graphics accelerator. The method takes advantage of the new technology “Graphical Electromagnetic Computing (GRECO)”. The target was simulated by G2Catmul-om (C-R) geometric spline, and the occlusion and blanking operation were completed by the graphic accelerator card hardware. The visible surface was shaded by using Phong lighting model. The physical optics (PO) ), Physical diffraction theory (PTD), and impedance boundary conditions (IBC) to calculate the radar cross section (RCS) of the target high frequency region.