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飞机红外仿真图像是空中目标红外识别算法的重要数据源,为改进飞机红外仿真效果并提高仿真实时性,在细节部分修正了现有红外计算方法并搭建了仿真平台。首先,全面分析了影响飞机红外辐射特性的因素,基于黑体辐射理论建立了蒙皮、尾喷管、尾焰、蒙皮对环境辐射反射的红外计算模型,修正了蒙皮温度和飞行速度这两个影响因素的计算方法;其次,基于VS2005 C++和三维渲染引擎OpenSceneGraph(OSG)搭建了一套仿真平台,该系统能动态改变飞机红外效果,实时生成飞机红外图像。实验结果表明:红外计算结果更精确,可以为空中目标红外识别算法提供数据;单目标仿真速率在100帧/s以上,满足实时仿真的要求。
Aircraft infrared simulation image is an important data source of aerial target infrared recognition algorithm. In order to improve the aircraft infrared simulation effect and improve the real-time simulation, the existing infrared calculation method is amended and the simulation platform is built in the detail part. Firstly, a comprehensive analysis of the factors that affect the infrared radiation characteristics of the aircraft, based on the theory of blackbody radiation, established the infrared calculation model of the skin radiation reflected by the skin, the tailpipe, the tail flame and the skin, and corrected the skin temperature and the flight speed Secondly, based on VS2005 C ++ and 3D rendering engine OpenSceneGraph (OSG), a set of simulation platform is built, which can dynamically change the infrared effect of the aircraft and generate the infrared images of the aircraft in real time. Experimental results show that the infrared calculation results are more accurate and can provide data for aerial target infrared recognition algorithm. The single-target simulation rate is above 100 frames / s, which meets the requirements of real-time simulation.