基于三维模型的飞机红外图像仿真研究  

Infrared Image Simulation of an Aircraft Based on its Three-Dimensional Model

作　　者：杨东升[1] 孙嗣良[1] 戴冠中[1] 

机构地区：[1]西北工业大学,陕西西安710072

出　　处：《西北工业大学学报》2010年第5期758-763,共6页Journal of Northwestern Polytechnical University

基　　金：航天支撑基金(1014006)资助

摘　　要：要对红外成像制导导弹攻击飞机的过程进行仿真,需要生成目标飞机的红外图像。当飞机受到导弹攻击时会采取各种机动动作进行规避,这就使导引头所探测到的图像随着弹目距离、飞机姿态而变化,所生成的红外图像必需能够反应这种变化。文章首先根据能量守恒定律和黑体辐射定律,并综合考虑了大气透过率、光学系统透过率和探测器响应率的影响,推导了导引头探测器接收到的飞机红外辐射功率计算公式,利用该公式计算出所建飞机三维模型每个面的辐射功率,并将其转换为红外灰度值,最后利用OpenGL技术直接对飞机三维模型进行操作,以实现各种位置、姿态下三维飞机模型到二维图像的转换,并用光学系统的点扩散函数与输出的图像进行卷积,最终得到反映光学模糊的飞机红外图像,最后开发了红外图像仿真软件,利用该软件生成了几种不同位置、不同姿态下的飞机红外图像,并对其进行了分析。Infrared images of an aircraft are needed for simulating the process of an infrared imaging guided missile attacking an aircraft.When the aircraft is attacked,it will maneuver to avoid the missile.Infared images detected by the seeker of the missile will change with the distance between the missile and the aircraft and the aircraft attitude.The changes need to be considered in the generated infrared image.In this paper,the formula for calculating the infrared radiation power received by the detector of the missile seeker was derived according to the law of conservation of energy and the law of blackbody radiation.The infulence of atmospheric transmittance,optic system transmittance and the responsivity of the dectector is also considered in the formula.The infrared radiation power of the faces of the three-dimensional aircraft model is calculated according to the formula.Then the power is converted into infrared gray value.We use OpenGL to trasform the three-dimensional aircraft model to infrared image according to the distance between the missile and the aircraft and the aircraft attitude.Finally,the infrared image can be genertated by convolving infrared image just generated and the point-spread function（PSF） of the optic system.A software is developed by us for simulating the infrared images of the aircraft.

关 键 词：飞机 三维模型 红外图像 仿真 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]