机载IRST跟踪算法

A Traking Algorithm for Airborne Infrared Searching and Tracking

机载ＩＲＳＴ主要用于高空远距离目标的探测和跟踪。传统的仅有角度的跟踪是得不到距离估计的，但是由于机载ＩＲＳＴ的平台容易实现机动，根据可观测性准则，平台机动是获得距离估计的必要条件。采用修正的球坐标方法对目标进行跟踪滤波，从而获取距离信息。仿真结果表明。

Airborne IRST(Infrared Searching and Tracking) are primarily used for detecting and tracking of the distant high altitude objects.The distance estimation cannot be obtained by the traditional tracking with only angle.Since the platform for airborne IRST is easy to be mobile,according to observability criterion,the mobility of platform is a necessary condition in obtaining the distance estimation.The tracking and filtering for the object are carried out with the modified spherical coordinate method,thus the distance information can be obtained.The simulation results show that the algorithm has a better performance.