魏格纳-维尔分布交叉项抑制方法综述

Review of Cross-terms Suppression Methods in Wigner-Ville Distribution

魏格纳-维尔分布(WVD)交叉项抑制一直是时频分析领域的研究热点之一,已有相当多的交叉项抑制方法被提出来并得到应用。综述了能量分布方法、信号分解方法、多谱图叠加法和其他类方法,并对各类方法的优缺点作了全面总结和分析,最后,对魏格纳-维尔分布交叉项抑制提出了一些参考性思路,如利用小波分析工具、分数阶傅里叶变换工具,以及多种方法综合应用等。

Wigner-Ville distribution is always a hot spot for time-frequency analysis, so considerable methods of interference suppression are proposed and used. This paper summarizes these technologies of WVD cross-terms suppression including energy distribution methods, signal decomposition methods, multiple spectrograms method and some other methods, and meanwhile analyzes their advantages and disadvantages systematically. Finally, some constructive thoughts for ulterior research are proposed, such as utilization of wavelet analysis tool and fractional Fourier transform tool, comprehensive application of multiple methods, etc.