经验模态分解的时频分析方法及其应用

研究了经验模态分解与希尔伯特变换相结合提取信号特征参数的方法,并对其性能进行了分析。给出了经验模态分解时频特性分析方法及步骤,并用该方法对瞬态信号特征提取及信号趋势提取进行了研究,仿真实验验证了该方法的可行性和有效性。将经验模态分解时频分析方法应用于信号的趋势提取领域,验证了此时频分析方法的有效性以及反映信号局部时频特征的独特优点。

Time-Frequency Analysis Method and Its Application Based on Empirical Mode Decomposition

For better signal processing and feature extracting of non-stationary signal,time-frequency analysis is one of the top interests and more and more research has been put on this topic.For the limitations of the conventional methods of time-requency analysis,a novel method of time-frequency analysis is analyzed which is applicable to non-stabilization and non-linear signal.Empirical mode decomposition algorithm which is used to extract features of signals through utilizing the empirical mode decomposition and...