一种非合作照射源的无源雷达目标检测方法

A target detection approach for passive radar based on non-cooperative illuminating

利用无源雷达来对目标检测是目前电子对抗研究的一个热点。文章给出了以调频广播信号为非合作照射源来进行目标探测的数学模型;提出了一种先对回波信号进行多普勒补偿后再进行相干积累的方法。通过对该雷达采集的实际回波数据进行仿真,表明该方法不仅具有很好的目标检测性能,而且实时性较强,为工程上实现提供了技术支持。

Target detection by passive radar attracts the attention of many researchers in the electronic warfare field. The mathematical model of target detection by regarding the FM signal as the non-cooperative illumination source is given in the paper. The method in which coherent accumulation is carried out after the echo is compensated by a Doppler frequency shift is introduced. The real echo data col lected by the radar are simulated,and the results show that the proposed method is effective in target detection and real-time processing.