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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。
Based on the principle of signal transmission and conversion of infrared imaging seeker, the main factors that affect the characteristics of seeker output image are analyzed. Based on the analysis, the mechanism of imaging features of infrared seeker is analyzed. With the aid of end-to-end imaging Considering the influence of the decoy on the radiation characteristics of the target surface and the gain characteristics of the seeker, a quantitative model of the imaging characteristics of the seeker after the decoy is established. Based on the theoretical model and the computer simulation of three-dimensional scene, The real-time simulation of the imaging and tracking characteristics of the seeker after the bait-bombs action is taken and the influence of the bait-bombs on the tracking performance of the seeker based on the simulation results is analyzed. The results show that the different directions of the decoy launch are different, the decoy play different influences on the tracking performance of the seeker. When the firing angle of the decoy shot relative to the target is 75 ° ~ 95 °, 190 ° ~ 215 ° and 250 ° ~ 280 ° , The decoy bombs have the greatest influence on the tracking performance of the seeker. When the firing angle of the decoys relative to the target is 10 ° -40 °, 150 ° -170 ° and 315 ° -325 °, Head tracking performance is the least affected.