一种雷达主瓣复合干扰盲源分离对抗方法

A Blind Source Separation Countermeasure Method for Radar Main Lobe Compound Jamming

为了有效地干扰相控阵体制的防空警戒雷达,降低雷达对目标的检测概率和识别概率,现代电子干扰机通常采用“复合拖引干扰”的干扰方式,以达到“隐真示假”的干扰目的。针对这一新型电子干扰技术,本文建立了复合拖引干扰的模型和极化信道扩展信号模型,在此基础上提出了一种基于极化通道扩展和盲源分离算法的干扰抑制方法,通过计算机仿真实验表明,所提出的算法能在较宽的信噪比和干信比条件下获得良好的目标和干扰分离性能。

In order to jam phased array radar effectively and reduce its target detection and recognition probability,modern jammers usually release“compound gate pull-off jamming”to achieve the purpose of“hiding the truth and revealing the false”.To solve this problem,the compound gate pull-off jamming model and the polarization channel expansion signal model are established in this paper.Furthermore,a signal separation method based on polarization channel expansion and BSS is proposed.The simulation results show that the proposed algorithm can achieve better separation performance in a wide range of SNR and JSR conditions.