Application research on separating noises from blasting vibration signal based on sgwt

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (1) : 24-28,4.

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Application research on separating noises from blasting vibration signal based on sgwt

XIE Quan-min1,2; LONG Yuan1; LU Fan-dong1; ZHONG Ming-shou1; MAO Yi-min1

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Abstract

To improve the analysis efficiency and quality of the test signal, the second generation wavelet transform was introduced to separate noises from blasting induced vibration signal. By Daubechies and inter-polation subdivision wavelets based on lifting scheme, the wavelets decomposition-threshold denois-ing-reconstruction of blasting induced vibration signals were carried out and satisfactory results were achieved. Through the comparison of denoising quality and efficiency of four different lifting wavelets, the method to select the best one which is suitable for analyzing blasting induced vibration signals was got. The method pro-vides reference for the introduction of SGWT to the analysis of blasting induced vibration signals and can real-ize extracting rapidly of the blasting induced vibration characteristics.

Key words

blasting induced vibration / separating noises form signal / second generation wavelet transform (SGWT) / lifting scheme / interpolation subdivision method

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XIE Quan-min;LONG Yuan;LU Fan-dong;ZHONG Ming-shou;MAO Yi-min. Application research on separating noises from blasting vibration signal based on sgwt[J]. Journal of Vibration and Shock, 2012, 31(1): 24-28,4