Study on Signal De-noising by Wavelet Analysis

In real engineering application,sampling signals are inevitably influenced by noise.Based on characteristic analysis of signal noise,wavelet analysis was applied to eliminate it,and a series of simulative research of steady signal and non-steady signal denoising was done under Matlab environment,a comparative denoising study of the pulse signal was performed based on four different thresholds.The results show that wavelet denoising is better for data processing;the method of wavelet application is practicable to real signal.