PDF Download HTML

[1]ZHANG Rui-hong,LIN Da-chao,QIAO Lan.Application of the Optimum Wavelet Packet Transform in Seismic Signals De-noising[J].Journal of Seismological Research,2011,34(03):0-.

Copy

Application of the Optimum Wavelet Packet Transform in Seismic Signals De-noising

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 34 Number of periods: 2011 03 Page number: 0- Column: Public date: 2011-09-28

Title:: Application of the Optimum Wavelet Packet Transform in Seismic Signals De-noising

Author(s):: ZHANG Rui-hong¹; 2; LIN Da-chao²; QIAO Lan¹; (1.Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China)(2. Department of Civil Engineering, North China Institute of Science and Technology, Beijing 101601, China)

Keywords:: seismic signal; WPT; best basis; denoising; dependent threshold

CLC:: P315.3

DOI:: -

Abstract:: We apply the node-dependent threshold relative to the characteristics of the time-frequency of the noise to the optimum Wavelet Packet Transform(WPT)method to denoise a synthetic noisy signal of the arrival of the simulative seismic wave,an experimental micro-seismic signal collected by a digital acoustic emission instrument, SDAES, and a seismic signal of 2007 Noto Hanto Earthquake in Japan recorded at NIED observatory. We find that the signal denoised by the optimum WPT method has a higher signal-to-noise ratio(SNR)and a lower distortion than those by other methods based on wavelet transform(WT)methods, and the WPT method shows the overall superiority.

References:: -

Similar References:

Memo

Last Update: 1900-01-01