Research on electromagnetic guided wave signal noise reduction technology based on lifting wavelet transform

When receiving electromagnetic guided wave, because of the impact of the space and the environment, the receiving signal often has a lot of noise interference signals. Article for better defect feature extraction reaction signal the lifting wavelet threshold de-noising method of receiving the electromagnetic wave guided signal noise reduction processing. Combined with the experimental analysis of the function of the mother wavelet noise reduction effect and select the optimal mother wavelet function. Simulation results show that the lifting wavelet of the threshold function for de-noising can effective reduce the noise and is an effective method.