应用双谱分析和分形维数的雷达欺骗干扰识别

发布时间：2018-04-24 20:29

本文选题：雷达 + 双谱分析　；参考：《西安交通大学学报》2016年12期

【摘要】：为解决频谱弥散干扰(SMSP)和切片组合干扰(CI)2种干扰类型的识别问题,提出了一种利用双谱分析和分形维数的干扰识别方法。首先对零中频处理后雷达接收信号进行双谱分析,得到接收信号的三维双谱信息;然后通过降维方法把三维信息变换成二维特征曲线,以减小干扰识别的计算量;最后提取二维曲线的盒维数和信息维数2个特征参数,通过支持向量机对干扰识别率进行检验。仿真结果表明:在一定的噪声背景下,该识别方法能够较为稳定地识别不同干扰形式;在信噪比为0dB的条件下,干扰的识别成功率能够达到88%以上,证明了干扰识别方法的有效性。
[Abstract]:In order to solve the problem of identification of two kinds of interference types: spectrum dispersive interference (SMSP) and slice combined interference (CIQ), a method of interference recognition based on bispectrum analysis and fractal dimension is proposed. Firstly, the received signal of the radar is analyzed by bispectral analysis after zero intermediate frequency processing, and the three dimensional bispectral information of the received signal is obtained, and then the 3D information is transformed into a two-dimensional characteristic curve by reducing the dimension to reduce the computation amount of interference recognition. Finally, two characteristic parameters of the two-dimensional curve, box dimension and information dimension, are extracted, and the interference recognition rate is tested by support vector machine (SVM). The simulation results show that the method can recognize different interference forms stably under certain noise background, and the success rate of jamming identification can reach more than 88% when SNR is 0dB. The effectiveness of the method is proved.
【作者单位】：空军工程大学防空反导学院;
【基金】：国家自然科学基金资助项目(61501500)
【分类号】：TN974

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