SGWT在爆破振动信号信噪分离中的应用研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (1) : 24-28,4.

论文

SGWT在爆破振动信号信噪分离中的应用研究

谢全民1,2; 龙源1; 钟明寿1; 陆凡东1; 毛益民1

作者信息 +

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

Author information +

文章历史 +

摘要

为提高测试信号分析效率和质量，引入二代小波变换并用于爆破振动信号信噪分离。采用提升db小波以及根据提升算法构造的插值细分小波，进行爆破振动信号的分解-阈值去噪-重构，取得了满意的效果。通过比较4个不同提升小波的去噪质量和效率，提出了适用于爆破振动信号分析的提升小波选取办法，为将SGWT引入到爆破振动信号分析研究领域，实现爆破振动特征的快速提取提供了参考

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.

导出引用

谢全民;龙源;钟明寿;陆凡东;毛益民. SGWT在爆破振动信号信噪分离中的应用研究[J]. 振动与冲击, 2012, 31(1): 24-28,4

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