红外视景TP391仿真目前已成为红外成像制导**设计和评估的一种重要方法。在分析红外成像原理的基础上,提出了一种基于OpenGL的地面坦克目标实时红外视景仿真方法,并编制了仿真程序软件。首先,利用OpenGL建立可见光场景,并使用ANSYS软件构建该场景的温度场模型；其次,考虑模型和视点间的大气衰减作用,利用Modtran软件建立大气衰减模型；最后,对模型各部分到达探测器表面的红外辐射强度进行灰度量化处理,实现可见光场景的实时渲染,得到对应的红外仿真图像。仿真结果表明,该系统提高了计算目标红外辐射分布的实时性和便捷性,能够实时生成不同波段、不同大气环境下的红外图像。

At present, infrared scene simulation has become an important method for the design and evaluation of infrared imaging guided weapons. On the basis of analyzing the principle of infrared imaging, a real-time infrared scene simulationmethod of ground tank targets based on OpenGL is proposed and a software for simulation program is compiled. Firstly, a visible light scene is built by OpenGL and the temperature field model of the scene is built by the ANSYS software. Secondly, considering the attenuation effect of the atmosphere between the model and the viewpoint, an atmospheric attenuation model is established by the Modtran software. Finally, the intensity of infrared radiation from each part of the model to the surface of the detector is quantified in gray-level so as to realize the real-time rendering of the visible light scene and obtain the corresponding infrared simulation image. The simulation results show that the system can improve the real-time performance and convenience in the calculation of the infrared radiation distribution of targets and can generate infrared images in different wavebands under different atmospheric environment conditions in real time.