动态海洋背景的红外仿真是实时红外战场仿真中的重要部分,具有重要的应用价值。文中提出了一种新的动态红外海洋场景生成方法,实现了逼真的海面实时仿真。采用法线图生成海面的波浪纹理。引入基于GPU运算的着色器编程实现海面的动态渲染。在着色器中,根据海面像素法线向量计算海面辐射特性、辐射强度和辐射方向。为构建大面积海洋场景,提出了基于探测器坐标检测的海洋模块的调度策略。实验证明,场景能够逼真实现中波段海面光斑和鱼鳞波效果,并且帧速能够满足实时性仿真要求。

The dynamic simulation of IR sea background is an important part of simulation of 3D sea battlefield environment, which has great application value. A simulation method of dynamic infrared sea background was presented in this paper, which achieved a lifelike sea surface real-time simulation. The texture of sea waves was generated based on normal map technique and the dynamic rendering sea surface by introducing shader programming based on GPU. In shaders, the radiation character, intensity and direction were calculated according to pixel normal. In order to construct sea scene with large area, view detector coordinate detecting technique was proposed. The experiment shows that the rendering speed of infrared sea scene created by the method can achieve the effect of facula and fish scale wave on mid band sea surface, and the frame rate meets the requirement of real-time simulation.