辅助天线对抗拖曳式雷达诱饵方法

Method on Auxiliary Antenna Against Towed Radar Decoy

针对单脉冲雷达极化形式单一而无法利用极化信息对抗拖曳式雷达诱饵的问题,提出通过与主天线极化正交的辅助天线对抗拖曳式雷达诱饵的方法。该方法利用拖曳式雷达诱饵释放的干扰一般为圆极化,而单脉冲雷达的极化方式为水平极化或者垂直极化,通过增加与主天线极化正交的辅助天线,实现单脉冲雷达对拖曳式雷达诱饵释放转发式干扰的对抗。仿真结果表明,该模型能够对拖曳式雷达诱饵转发的简单功率放大干扰进行对消,且对消效果不受诱饵转发干扰延迟时间约束,也可以对诱饵调制后转发的连续脉冲干扰实现有效对消。

Aiming at the single polarization form of monopulse radar and the problem that it was impossible to use polarization to against the towed radar decoy,this paper proposed a method to against the towed radar decoy based on the auxiliary antenna orthogonal to the polarization of the main antenna.In this method,the interference released by towed radar decoy was generally circular polarization,while the polarization mode of monopulse radar was horizontal polarization or vertical polarization.By adding an auxiliary antenna which was orthogonal to the polarization of the main antenna,monopulse radar can eliminate the retransmission interference of the towed radar decoy.Simulation results show that the model can cancel the simple power amplification jamming of towed radar decoy forwarding,and the cancellation effect was not restricted by the delay time of decoy forwarding jamming,and it could also cancel the continuous pulse jamming of decoy modulation and forwarding effectively.