基于归一化小波分解能量比的雷达有源欺骗干扰识别

Active Deception Jamming Recognition of Radar Based on Normalized Wavelet Decomposition Power Ratio

结合数字射频存储器(DRFM)欺骗式干扰机的结构特点,通过干扰的作用过程建立针对跟踪雷达的典型拖引欺骗干扰的信号模型。对一个相干处理周期的归一化雷达接收信号进行小波分解,提取各阶分解向量的能量比作为特征参数,研究了基于拖引过程的欺骗干扰类型识别方法,为后续的雷达系统抗干扰方法选取提供了先验信息。仿真实验证明该方法有较高的识别率。

The typical gate pull deception jamming signal model of the tracking radar is estab- lished in the releasing process of jamming, combined with the structural features of the decep- tive jammer based on digital radio frequency memories （DRFM）. Wavelet decomposition of the normalized radar received signal is used to extract the feature parameters. Normalized power ratios are extracted as the multi-scale decomposition coefficients of the radar received signal. Deception jamming identification method is proposed based on the process of gate pulling, which gives a priori information to the selection of anti-jamming method for radar system. Simulation results show that the method has a higher recognition rate.