基于小波包变换的相控阵体制雷达识别方法
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摘要
针对相控阵体制雷达识别问题,提出了一种基于扫描包络频谱边带小波包变换和支持向量机(SVM)的识别方法.通过对侦收信号扫描包络进行快速傅里叶变换,挖掘相控阵体制雷达和常规体制雷达扫描包络在频域上的差异,提取频谱边带小波包特征,并利用SVM进行分类识别.仿真结果表明,小波包特征类间分离度好,并且对测量误差不敏感,将其作为相控阵体制雷达识别的特征参数,可以得到较高的识别准确率.
Aiming at phased-array radar identification this paper proposes a method based on the wavelet packet transform of scanning envelope frequency spectrum sideband and support vector machine. Firstly,fast Fourier transform is performed on the detected radar scanning envelope,and the differences of scanning envelope in the frequency domain between the phased-array radar and the conventional radar are discovered. And then the wavelet packet features of spectrum sidebands are extracted and the support vector machine used for recognition.The simulation results show that the wavelet packet feature has good separation degree and is insensitive to measurement error,and that using it as a characteristic parameter for phased-array radar recognition is in the position to obtain relatively high recognition accuracy.
Aiming at phased-array radar identification this paper proposes a method based on the wavelet packet transform of scanning envelope frequency spectrum sideband and support vector machine. Firstly,fast Fourier transform is performed on the detected radar scanning envelope,and the differences of scanning envelope in the frequency domain between the phased-array radar and the conventional radar are discovered. And then the wavelet packet features of spectrum sidebands are extracted and the support vector machine used for recognition.The simulation results show that the wavelet packet feature has good separation degree and is insensitive to measurement error,and that using it as a characteristic parameter for phased-array radar recognition is in the position to obtain relatively high recognition accuracy.
引文
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[11]BARSHAN B,ERAVCI B.Automatic radar antenna scan type recognition in electronic warfare[J].IEEE Transactions on Aerospace and Electronic Systems,2012,48(4):2908-2931.
[2]梁广德,梁百川.相控阵雷达信号截获与识别的仿真分析[J].航天电子对抗,1999,15(3):45-49.
[3]王成,张玉.对相控阵雷达的侦察识别研究[J].航天电子对抗,2000,16(1):49-53.
[4]金天祥,潘继飞,唐绩,等.基于小波包的雷达波形设计与性能分析[J].现代雷达,2018,40(1):20-24.
[5]陈博文,蒋磊,张群,等.基于小波包-FHN模型的UWB-IR信号检测[J].信号处理,2017,33(10):1324-1331.
[6]SHENG Chuan,ZHANG Yongshun,LU Wenlong,et al.Method to reconnoiter pulse amplitude train for phased array radar based on Hausdorff distance[J].Journal of Systems Engineering and Electronics,2017,28(06):1089-1097.
[7]AYAZGOK S,ERDEM C,OZTURK M T,et al.Automatic antenna scan type classification for next-generation electronic warfare receivers[J].IET Radar,Sonar&Navigation,2018,12(4):466-474.
[8]贲德,韦传安,林幼权.机载雷达技术[M].北京:电子工业出版社,2006:332.
[9]江绪庆.多辐射源雷达信号环境仿真技术[D].成都:电子科技大学,2006:17.
[10]何明浩.雷达对抗信息处理[M].北京:清华大学出版社,2010:77-78.
[11]BARSHAN B,ERAVCI B.Automatic radar antenna scan type recognition in electronic warfare[J].IEEE Transactions on Aerospace and Electronic Systems,2012,48(4):2908-2931.