基于对称Holder系数的雷达辐射源信号特征分析

Feature Analysis of Radar Emitter Signals Based on Symmetrical Holder Coefficient

文章基于Holder系数,提出了一种改进的雷达辐射源信号脉内特征提取方法,称之为对称Holder系数法。给出了对称Holder系数的定义,描述了基于对称Holder系数的特征提取算法。可以看出对称Holder系数法包含了相像系数法,后者只是前者的一种特例,且该方法相对于Holder系数法,其复杂度将减少一半。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,对称Holder系数在取不同类型时均获得了很好的正确识别率,并且当对称Holder系数所选取的类型不为相像系数时,可以获得更高正确识别率。

An improved method called the symmetrical Holder coefficient method based on the Holder coefficients is proposed to extract features from radar emitter signals. The definition of symmetrical Holder coefficient is given, and the symmetrical Holder coefficient feature extraction algorithm is described. It indicates that the resem- blance coefficient method is only one case of the symmetrical Holder coefficient methods and the complexity is half of those of the Holder coefficient method. Six typical radar emitter signals are chosen to test the validities of the symmetrical Holder feature extraction and classification recognitions, and the results that not only the high accurate recognition rate can be achieved while the symmetrical Holder coefficient takes different types, but also the higher accurate recognition rate can be obtained when the symmetrical Holder coefficient takes the type of not-resemblance coefficient.