一种基于诱导脉冲的极化对消抗欺骗干扰方法

Anti-deception jamming method of polarization canceller based on induced pulse

摘要:

针对反舰导弹雷达受到敌方大功率有源欺骗信号干扰而不能有效探测目标的问题，提出了一种基于诱导脉冲的极化对消方法。首先采取Jones矢量对雷达及干扰信号的极化特性进行表征，接着建立一种基于诱导脉冲的雷达H、V双极化通道接收体制，时序上分为诱导和对消两个阶段；然后具体分析了极化对消器的算法原理；最后采取正负斜率线性调频对诱导脉冲的波形进行设计。仿真实验结果表明，算法可以有效抑制欺骗干扰，匹配滤波后干扰抑制比可达30dB左右。

Abstract:

In order to solve the problem that anti-ship missile radar cannot detect target effectively due to interference from high-power active deception jamming signals of enemy, a polarization cancellation method based on induced pulse is proposed. Firstly, Jones vector is used to characterize the polarization of radar and jamming signals. Then, a radar H and V dual-polarization channel receiving system based on induced pulse is established, which is divided into induction and cancellation stages. Then the algorithm principle of polarization canceller is analyzed. Finally, the waveform of induced pulse is designed with positive and negative frequency modulation. Simulation results show that the algorithm can effectively suppress deception jamming, and the interference suppression ratio can reach about 30dB after matched filtering.