中文摘要：

基于红外成像导引头信号传递和转换机理,分析了影响导引头输出图像特征的主要因素,并在此基础上分析了红外诱饵弹作用导引头成像特征的机理;借助端到端成像建模思想,综合考虑诱饵弹对目标表面辐射特性及导引头增益特性的影响,建立了诱饵弹作用后导引头成像特征量化模型;以理论模型为基础,借助计算机三维场景仿真技术,实现了诱饵弹作用后导引头成像及跟踪特性实时仿真,并基于仿真结果分析了不同发射方向诱饵弹对导引头跟踪性能的影响。结果表明：诱饵弹发射方向不同,诱饵弹对导引头跟踪性能的影响程度不同;当诱饵弹相对目标运动方向的发射角为75°~95°、190°~215°和250°~280°时,诱饵弹对导引头跟踪性能的影响程度最大;当诱饵弹相对目标运动方向的发射角为10°~40°、150°~170°和315°~325°时,诱饵弹对导引头跟踪性能的影响程度最小。

英文摘要：

The main factors that affect the imaging characteristic of infrared imaging seeker and the jamming principle of infrared decoys on the imaging characteristic of infrared imaging seeker were analyzed based on signal transfer and conversion mechanism of infrared imaging seeker. Then, with the end-to-end imaging modeling ideas, and considering the impact of infrared decoys on the radiative properties of target surface and the auto gain characteristics of infrared imaging seeker, the imaging characteristics quantitative model of infrared imaging seeker was established. Furthermore, on the basis of theoretical analysis mentioned above, the real-time simulation of the output images and tracking features of infrared imaging seeker after infrared decoys jamming was carried out by computer 3D scene simulation technology, and the tracking performance of the infrared imaging seeker was studied based on the simulation results. The results show that the jamming effect of infrared decoys on the tracking performance of infrared imaging seeker varies with the launching direction of infrared decoys. The infrared decoys show the greatest jamming effect when the launching angle of infrared decoys are about75°-95° 、190°-215° or 250°-280°, while infrared decoys show the least jamming effect when the launching angles of infrared decoys are about10°-40°, 150°-170° or 315°-325°.