在外辐射源雷达中,当外辐射源的位置信息未知时,无法利用外辐射源对目标跟踪定位。文中介绍了一种基于迭代扩展卡尔曼滤波(IEKF)的目标、外辐射源联合跟踪滤波算法,该算法通过对已知外辐射源和未知外辐射源的联合利用,保证了雷达系统在探测目标的同时,也可定位跟踪未知外辐射源。通过仿真数据验证,该方法对目标、外辐射源的跟踪定位有较好的滤波效果,辐射源定位收敛速度优于EKF滤波方法。

Traditionally, it is impossible for external emitter radar to track objects when external emitter’s position is unknown. In this paper, a track algorithm is presented, which is based on IEKF. Through combinablenably utilizing known external emitter and unknown external emitter, objects can be detected. Meanwhile, the unknown external emitter can be located and tracked. It is shown that this algorithm is better to track objects and external emitter. Moreover, this algorithm converges faster than EKF.