Multi-resolution analysis of local wave method and its application
MA Xiao-jiang · Journal of Dalian Maritime University · 2007
Local wave method can decompose any complicated signal into a finite number of intrinsic mode functions(IMF) by using Local wave decomposition and defining instantaneous frequency and local wave functions,which is based on the instantaneous frequency of signals.Every IMF describes different frequency and scale of the inherence oscillation mode.Multi-resolution analysis of local wave timefrequency distribution can give enough information in both time domain and frequency domain.After theoretical analysis and experimental simulation,local wave method is proved to be efficient and can provide the engineering world good means for time-frequency analysis.