Research on De-Noising of Ultrasonic Detection Signal via Multiwavelets with Different Preprocessing Methods

Xi Feng Zhou; Hui Ying Suo; Qian Gang Guo

doi:10.4028/www.scientific.net/AMR.403-408.1823

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 403-408Research on De-Noising of Ultrasonic Detection...

Research on De-Noising of Ultrasonic Detection Signal via Multiwavelets with Different Preprocessing Methods

Abstract:

On the basis of introducing multi-wavelet theory, a new soft-threshold function is proposed, and the de-noising effect of Ultrasonic signal is investigated by adopting different preprocessing methods of various multi-wavelet. An improved matrix preprocessing method is proposed for GHM also. Simulation results indicate that the selection of a proper preprocessing method is important for multi-wavelet de-noising. Therefore, it is of great importance to choose a suitable preprocessing method and multi-wavelet in order to obtain a better de-noising effect.

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Periodical:

Advanced Materials Research (Volumes 403-408)

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1823-1829

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https://doi.org/10.4028/www.scientific.net/AMR.403-408.1823

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Online since:

November 2011

Authors:

Xi Feng Zhou, Hui Ying Suo, Qian Gang Guo

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De-Noising, Multi-Wavelet, Preprocessing, Ultrasonic Detection Signal

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