防空导弹攻击目标的红外成像特性分析

通过结合对目标的红外成像特性研究,首先阐述了在复杂背景条件下防空导弹对目标的红外成像寻的制导的组成和原理。然后详细分析了地面杂散背景的辐射和散射特征,综合分析了军用飞机被防空导弹攻击目标的红外辐射特性。在对复杂背景辐射特征和目标红外特性分析的基础上,给出了一组典型地表光谱辐射亮度曲线和太阳对地表的全波段辐射能流(辐照度)随时间的变化曲线;绘制出了红外成像导引头在整个红外波段内的探测效能曲线。分析结果对研究防空导弹红外成像导引头如何从复杂背景中将目标的典型特征信息提取出来并进行有效识别和跟踪奠定了基础。

Analysis of IR imaging characteristic of air defense missile targets

The IR imaging characteristic of air defense missile targets is analyzed in this paper. In section 1, the configuration and principle of an IR imaging homing system under clutter background are introduced. The IR imaging homing system detects the IR radiation feature of target as well as clutter background using the IR detector. It can get information of target and background through imaging, then intercepts, tracks targets and guides the missile by processing these images. In section 2 and 3, the IR radiation and scatter characteristic of ground background are analyzed in detail. The IR radiation characteristic of battle plane, the primary target of anti-air missile is discussed comprehensively. Based on these analyses, a group of curves of solar irradiance of the whole band and typical earth surface spectrum radiant luminosity are plotted. The detection effectiveness curve of whole band is given. Conclusions in this paper has a significant influence on extracting the typical feature information of target in clutter, efficient target recognition and tracking for air defense IR imaging seeker.