一种极化捷变雷达中欺骗性干扰的提取方法

摘要

In order to simplify the separation of radar echo and deception and to get the Jones vector of deception, a simple and convenient method to extract radar deception is proposed. By transmitting a group of relative polarization agile signals, the scattered wave and deception can be separated during the calculation of the signal output by the receiver, while utilizing the polarization effect of the target and the constant polarization state of deception. Compared with existing interference feature extraction algorithms, resources can be saved when this algorithm is implemented in single chip. The simulation results show that the relative errors of the calculation are less than 10% , when INR is more than 11. 8 dB.%为简化目标回波和干扰信号的分离过程以及求解干扰的Jones矢量,提出一种简便的提取雷达欺骗性干扰方法.通过发射一组相关的极化捷变信号,利用目标的变极化效应和干扰极化相对不变的特性,在对接收机输出信号的加减运算中将目标回波和干扰分离,从而提取干扰波形以及计算其Jones矢量.与现有干扰特征提取算法相比,该方法在单片实现时可节省芯片资源.仿真表明,当干噪比(INR)大于11.8 dB时,Jones矢量计算相对误差不超过10％.