基于非合作照射源的无源雷达直达波抑制技术

A non-cooperative illumination based suppression of direct wave interference for passive radars

利用非合作照射源对目标探测的雷达具有良好的“四抗”性能,是目前电子对抗研究的一个热点。文中首先介绍了该体制雷达对目标进行有效探测的技术瓶颈———直达波干扰抑制;然后提出了相应的一系列解决方案;最后给出了以调频广播信号为非合作照射源的一个实验系统,并利用该实验系统采集的数据进行仿真,仿真结果验证了上述方法的有效性。

Target detection by non-cooperative illumination is currently a hotspot of study in electronic warfare because of its potential advantages in passive radar ECM. The direct wave suppression which is the bottleneck for target detection by non-cooperative illumination is introduced. Solutions are provided in detail on how to suppress the direct wave interference. Finally, an experimental system using FM broadcasting signals as non-cooperative illumination source is presented. Simulation over collected data proves the above-said technology to be effective.