基于外辐射源的双基地雷达直达波干扰对消研究

Research on Direct-path Interference Cancellation for Bistatic Radar Based on Extra Illuminator

利用外辐射源对目标探测是目前电子对抗研究的一个热点,因为该体制雷达具有良好的“四抗”性能。首先对该体制雷达对目标进行有效探测的难点——直达波干扰进行了讨论;然后提出了基于幅度动态补偿和分数内插的相位动态补偿技术来实现对直达波干扰抑制方法;最后利用一个基于FM广播照射源的实验系统采集的数据进行仿真,验证了该方法的有效性。

Target detection by extra illuminator is a hotspot in electronic warfare with ＂four countering＂ potential advantages for passive radar. First, direct path interference suppression, the obstacle of technique for target detection by extra illuminator, is analyzed. Second, a solution based on amplitude dynamic compensation and fractional interpolated phase dynamic compensation is introduced. Finally, analysis of the data, from an experimental system based on FM broadcast signal as extra illuminator, shows that the method has better performance of target detection.