摘要
本文提出一种新的Cohen类时频分布并对几种主要Cohen类时频分布进行了实验比较研究。结果表明,基于指数分布(ED)和锥形核分布(CKD)的复合核分布(ECKD)具有更强的抑制交叉干扰性质,同时几乎不会使ED或CKD的时频分辨力降低。
A new quadratic time-frequency distribution (TFD) with a compound kernel is proposed and a comparative study of several popular quadratic TFD is carried out. It is shown that the new TFD with compound kernel has stronger ability than the exponential distribution(ED) and the cone-shaped kernel distribution(CKD) in reducing cross terms, meanwhile almost not decreasing the time-frequency resolution of ED or CKD.
关键词
信号处理
时频分析
二次时频分布
Signal processing, Time-frequency analysis, Time-frequency distribution of Cohen class
