一种红外成像引信中的飞机姿态识别方法

红外成像引信可以获得飞机的由完整到局部的一系列动态红外图像，飞机姿态识别对基于导引头信息利用的成像引信确定瞄准点具有非常重要的意义。文中分析了高速交会情况下飞机目标的运动特性，提出了一种飞机姿态识别方法，通过利用遗传算法确定像平面上飞机图像的旋转情况和机头位置，利用测距装置提供的距离信息、飞机图像的长度及红外探测器的系统参数确定飞机的俯仰情况，并利用弹目交会过程中机轴方位角和高低角的不变性重建局部成像跟踪情况下的空间机轴，最后实现了成像引信局部成像跟踪过程中飞机飞行姿态的识别。

A recognizing method of aircraft status in imaging infrared fuze

The infrared imaging fuze can get a series of dynamic infrared images of aircraft from the whole to the part.The recognition of aircraft status is of great significance to fixing aimpoint by imaging fuze based on the utilizing of seeker information.Firstly we analyze the moving characteristics of aircraft in high speed encounter and propose a method to recognize the status of aircraft.With this method,we get the rotation status of aircraft image on image plane and the position of aircraft nose through genetic algorithm,and get the pitching status of aircraft by utilizing the distance information,the length of aircraft image and the system parameter of infrared detector,provided by measurement device,and reconstruct the aircraft axis in part imaging tracking of 3 dimensions by use the invariability of azimuth angle and pitch angle of aircraft axis in missile and target encounter.Finally,we realize the recognition of aircraft status in part imaging tracking.