摘要
Hilbert-Huang变换(HHT)是近年来发展起来的一种新的时频分析方法。本文首先阐述了基于经验模态分解(EMD)的Hilbert—Huang变换(HHT)的基本原理及英特点,然后将该方法用于实例,对比分析了HHT变换和传统的傅立叶变换的实验结杲,进而说明了该方法用于信号时频分析的可行性和优越性。
Hilbert-Huang Transform (HHT) is a newly developed method for time-frequency analysis.This pa- per firstly discusses the fundamental theory and features about Hilbert-Huang transform based on Empirical Mode Decomposition (EMD).And then the approach is applied to analyze an example by comparing with Fourier transform.The detail comparison of the results from two methods shows that HHT is an efficient tool for analyzing nonlinear and non-stationary signal.
出处
《宿州学院学报》
2006年第3期135-137,134,共4页
Journal of Suzhou University
