Noise Reduction Technology Based on Wavelet Transform and Realization in Matlab
JI Chao-hui · Ordnance Industry Automation · 2006
Modular maximum,scale space filtering and domain value filtering are three methods of wavelet noise reduction.Domain value filtering method only decompounded the low frequency,without considering the high frequency,so it can be disposed through wavelet function.The disposing process of domain value filtering method as follows: the wavelet decomposition of signals;the domain value quantification of high frequency coefficient in wavelet decomposition;recombination of signals.The simulation result of the submarine measure orientation proves that this method is reliable.