一种新的雷达辐射源信号脉内特征提取方法

New intra-pulse feature extraction approach of radar emitter signals

提出了一种新的雷达辐射源信号脉内特征提取方法,该方法由Holder不等式演化而来,故称之为Holder系数法。给出了Holder系数的定义,描述了基于Holder系数的特征提取算法。实验结果表明了Holder系数法的良好特性。可以看出Holder系数法包含了相像系数法,后者只是前者的一种特例。文中选择了6种典型的雷达辐射源信号进行特征提取和分类识别实验。实验结果表明,Holder系数在取不同类型时均获得了很好的正确识别率,为工程应用提供了多种有效选择,并且当Holder系数所选取的类型不为相像系数时,可以得到更好正确识别率。

A new approach called Holder coefficient approach is proposed to extract features from radar emitter signals. The approach comes from the inequality of Holder type. The definition of Holder coefficient is given. The Holder coefficient feature extraction algorithm is described. The experiments show the good charac- teristics of the approach. It indicates that resemblance coefficient approach is just one case of Holder coefficient approach. Six typical radar emitter signals are chosen to be made the experiment of Holder feature extraction and classification recognition. The results of the experiment show that not only high accurate recognition rate can be achieved while Holder coefficient takes different types, which provides several useful choices for engineering, but also higher accurate recognition rate can be obtained when Holder coefficient takes the type not resemblance coefficient.