基于IR方位信息的多普勒盲区跟踪方法研究

Research ontracking of target hidden in Doppler Blind Zone based on bearing information of IR

机载脉冲多普勒雷达存在多普勒盲区,对处在多普勒盲区内的目标跟踪容易出现跟踪中断或重新起批的问题。针对这一问题,提出了一种基于雷达与红外传感器的数据融合方法。目标未进入多普勒盲区前,通过雷达与红外融合跟踪获取目标运动的先验信息;目标进入多普勒盲区内,利用红外传感器获取的方位信息,结合盲区前融合跟踪获取的先验信息实现目标的连续跟踪。仿真结果表明本文提出的方法能够对处于多普勒盲区内作机动转弯的目标进行连续跟踪,弥补了雷达在盲区内对目标跟踪过程中出现的跟踪中断与重新起批问题。

Doppler Blind Zone（DBZ）in pulse Doppler（PD）radar can cause the termination of target tracking and a repeated count of tracks.Aiming at solving this problem,an algorithm based on radar and IR data fusion was proposed.Before entering DBZ,the trajectory information of the target can be obtained by the joint tracking of radar and IR.When the target enters DBZ,it can be tracked continuously using the bearing information of IR and the trajectory information which was obtained previously.Simulation results show that the algorithm is feasible and it can be used to solve the tracking problem in DBZ.