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Vol. 177, Issue 8, August 2014, pp. 259-264

 

Bullet

 

Study and Application of Wavelet-based Denoising Method of Seismic Effect Signals
of Colluvium Accumulation Slope
 

1 Fei Xie, 2, 3, * Dong Huang

1 Department of Electronic and Information Engineering, Shunde Polytechnic, 528300, China
2 Key Laboratory of Mountain Hazards and Surface Process, Chengdu 610041, China
3 Institute of Mountain Hazards and Environment, Chinese Academy of Science and Ministry of Water Conservancy, 610041, China
2, 3 Tel.: +86-028-85228816, fax: +86-028-85228816

1 E-mail: jeffreyhsieh@163.com

 

Received: 23 July 2014 /Accepted: 25 August 2014 /Published: 31 August 2014

Digital Sensors and Sensor Sysstems

 

Abstract: Stability analysis of ground motion topography effect is one of the important topics in geotechnical and earthquake engineering. In order to solve the major problems in seismic effect signals of colluvium accumulation slope in different target positions: weak echo signal and large dynamic range, we proposed an improved wavelet denoising analysis method. Through denoising experiments, we calculated signal-noise ratio and root mean square error, which could be used as denoising evaluation index. In this way, we obtained optimal wavelet basis, decomposition scale, and threshold allocation rules and achieved the better wave filtering effect and the increased signal-noise ratio.

 

Keywords: Round motion, Topography effect, Dynamic response, Denoising, Wavelet basis function.

 

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