杂波干扰下雷达微弱多目标检测跟踪方法

Radar weak multiple-target detection and tracking method under clutter interference

为了在杂波环境中准确的完成雷达微弱多目标的检测,需要对雷达微弱多目标检测方法进行研究。采用当前检测方法在杂波干扰下对雷达微弱多目标进行检测时,不能有效的去除目标回波信号中存在的噪声信号,得到的目标运动轨迹误差较大,存在信噪比低和检测准确率低的问题。提出一种杂波干扰下雷达微弱多目标检测方法,以地面的辐射源作为雷达发射站,载机作为接收站,建立雷达系统模型,通过雷达系统模型得到目标回波信号模型;通过滤波器去除目标回波信号中存在的噪声信号,得到重构的目标回波信号,通过两级门限检测方法得到微弱目标的状态序列,采用逆序递推法得到目标的运动轨迹,完成杂波干扰下雷达微弱多目标的检测。实验结果表明,所提方法的信噪比高、检测结果准确率高。

In order to accurately complete the detection of radar weak multi-target in clutter environment,it is necessary to study the radar weak multi-target detection method. When the current detection method is used to detect the radar multi-target under the clutter interference,the noise signal existing in the target echo signal can not be effectively removed,and the obtained target motion trajectory error is large,and the signal-to-noise ratio is low and the detection accuracy is low. A weak multi-target detection method for radar under clutter interference is proposed. The ground radiation source is used as the radar transmitting station,the carrier is used as the receiving station,the radar system model is established,and the target echo signal model is obtained by the radar system model. The noise signal existing in the target echo signal obtains the reconstructed target echo signal,and the state sequence of the weak target is obtained by the two-level threshold detection method. The motion trajectory of the target is obtained by the reverse recursion method,and the radar is weak under the clutter interference. The experimental results show that the proposed method has high signal-to-noise ratio and high accuracy of detection results.