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在计算介质目标雷达散射特性的众多方法中,图形电磁学和射线追踪技术是计算高频区散射特性的两种有效方法.将两种方法有效地结合:首先通过OpenGL的光照模型和消隐,将介质目标的外形显示在屏幕上,并从缓存区中获取有效像素的颜色分量和位置信息,计算一次散射效应,然后将这些信息作为起始点信息,利用射线追踪技术计算多次散射效应,最后叠加一次、多次散射效应得到总散射特性.对圆柱、球的仿真结果证明了该方法的有效性和可行性.
Among the many methods of calculating the radar target scattering characteristics of the target, the graphic EM and ray tracing techniques are two effective methods to calculate the scattering characteristics in the high frequency region.The two methods are effectively combined: First, through the OpenGL illumination model and blanking, The appearance of the media target is displayed on the screen and the color components and location information of the effective pixels are obtained from the buffer area to calculate the primary scattering effect and then use the information as the starting point information to calculate the multiple scattering effect by the ray tracing technology. The results show that this method is effective and feasible by the simulation results of cylinder and ball.