新型红外成像引信终端可视化仿真研究

新型红外成像引信通过共享成像导引头实现前视探测和起爆控制,能够获得目标由完整到局部的一系列动态红外图像.装有新型红外成像引信的先进红外成像制导型空空导弹强调实现对目标的全向攻击,因而其弹目交会情况是复杂多变的.由于不可能获得任意交会情况下的照片或录像资料,这给基于GIF技术的成像引信瞄准点识别算法研究带来了极大困难.首先分析了弹目遭遇情况,研究了影响目标飞机姿态和成像的因素,然后利用OpenGL三维图形库和C++作为编程工具,建立并绘制了目标飞机的三维模型,并通过模型变换和合理设置目标的材质和贴图,实现了红外成像引信的终端可视化仿真.最后,给出了一些不同姿态和在不同交会阶段的目标飞机的仿真图像,并利用这些仿真图像对我们在前一阶段工作中提出的一种基于机头位置和机轴方向检测的瞄准点识别算法进行了验证,结果表明本文提出的仿真方案能够满足新型红外成像引信瞄准点识别算法研究的需要.

Investigation of New Infrared Imaging Fuze Endgame Visualization Simulation

The new infrared imaging fuze realizes forward detection and burst control by sharing the imaging seeker, which can get a series of dynamic infrared images of aircraft from the whole to a part. The omnidirectional attack ability was a very important function of advanced infrared imaging guide air-to-air missile (AAM), hence the missile/target encounter situation was very complex, to get the picture or video of whole missile-target encounter situation is impossible and unpractical, so huge difficulty was introduced to the investigation of aimpoint recognition algorithm of imaging fuze based on GIF (Guidance Integrated Fuzing) technology. In this paper, the missile/target encounter modeling was analyzed firstly and the factors that influence aircraft pose and imaging was investigated, then we utilize the OpenGL three-dimension graphic library and C language to establish and draw the three-dimension modeling of target, through modeling translation and setting the material and image of aircraft, the endgame visualization simulation of infrared imaging fuze was realized. Finally, some simulation images of aircraft in different pose and in different encounter phase was provided. From these simulation images, the aimpoint recognition algorithm proposed in our earlier work that based on the detection of nose position and axis direction was tested. Simulation results show that the method proposed in this paper can meets the need of new infrared imaging fuze aimpoint recognition algorithm investigation.