Improvement of the wavelet transform maximum modulus method for blasting vibration signals

XU Xue-yong; CHENG Kang

doi:10.11883/1001-1455(2009)02-0194-05

Volume 29 Issue 2

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2009 > 29(2): 194-198

XU Xue-yong, CHENG Kang. Improvement of the wavelet transform maximum modulus method for blasting vibration signals[J]. Explosion And Shock Waves, 2009, 29(2): 194-198. doi: 10.11883/1001-1455(2009)02-0194-05

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XU Xue-yong, CHENG Kang. Improvement of the wavelet transform maximum modulus method for blasting vibration signals[J]. Explosion And Shock Waves, 2009, 29(2): 194-198. doi: 10.11883/1001-1455(2009)02-0194-05

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Improvement of the wavelet transform maximum modulus method for blasting vibration signals

doi: 10.11883/1001-1455(2009)02-0194-05

XU Xue-yong^1,2,
CHENG Kang³

1.
Institute of Seismology, China Earthquake Administration, Wuhan 430071, Hubei, China;
2.
Wuhan Institute of Earthquake Engineering, Wuhan 430071, Hubei, China;
3.
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, China

Publish Date: 2009-03-25

Abstract

Abstract

Aimed at the disadvantage of the traditional wavelet transform maximum modulus (WTMM) denoising method not to identify all signal characteristics, an improved denoising method based on the WTMM technique was proposed, by using adaptive decomposition dimension instead of dyadic scales, to meet the signal denoising demands. The improved WTMM method and the traditional WTMM method were applied to analyze the original blasting vibration signals. The denoised signal by the improved WTMM method is coaxially more distinct from the detected signals and has better continuity, and the signal-to-noise ratio is improved from 17.25 to 20.16. It is suggested that the improved WTMM method has better denoising effect than the traditional WTMM method.
- mechanics of explosion,
- improved WTMM,
- adaptive decomposition dimension,
- blasting vibration signal

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