捷联式导引头与弹体固联,弹体姿态的扰动会导致目标在图像中的位置呈现复杂的运动特性。为了实现对目标的稳定跟踪,必须扩大导引头的搜索范围,从而降低了目标跟踪算法的实时性。文中建立了捷联式图像导引头的解耦模型,并提出了一种弹体姿态的解耦算法,利用惯性设备采集到的实时姿态角等信息进行了仿真验证。仿真结果表明算法可稳定的实现目标的实时跟踪。

Because strapdown seeker is fixed with the missile body, the disturbance of the missile body makes the location of the target in the image deviate from the theoretical location. In order to achieve stable target-tracking, the search scope must be expanded. But it is difficult to guarantee real-time target-tracking. This paper established a decoupling model of strapdown imaging seeker, then proposed an algorithm for decoupling the attitude of the strapdown seeker. Finally, by making use of the attitude information acquired from the strapdown inertial sensors, simulation results show the algorithm can improve the reliability of real-time tracking.