Abstract
In view of the problems of inaccurate echo signal caused by noise interference in mine geological radar echo detection, a method for eliminating horizontal noise of radar echo signal based on wavelet threshold is proposed. In this method, binomial function is selected as the Morlet wavelet basis function. According to the wavelet threshold algorithm, the optimal decomposition level is adaptively selected and the wavelet threshold is determined. The sqtwolog criterion is selected to remove the horizontal noise in the mine geological radar echo. The hard threshold method is used to detect the echo signal. Finally, the simulation experiment is carried out. The results show that the method of determining the optimal decomposition level based on wavelet decorrelation whitening test is feasible and effective. The optimal decomposition level of mine geological radar echo signal is between 4 and 5, and the effect of denoising is the best.
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