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Industrial Instrumentation ＆ Automation. 2015, (04)

An improved method for wavelet threshold denoisingChinese Full Text

ZHANG Yan;YANG Zhigang;WEI Tai;Gansu Special Equipment Inspection and Research Institute;

Abstract: For the difficulty of selecting threshold value in the traditional wavelet threshold denoising method,a new type of wavelet- empirical model decomposition（ EMD）- singular value decomposition（ SVD） is proposed. An original signal is decomposed by wavelet transform and a group of detail signals are obtained,however,heavy noise wavelet coefficients are not simply set to zero by wavelet threshold any more,whereas these heavy noise wavelet coefficients are used to EMD and SVD difference spectrum deco... More
Keywords：

wavelet transform; EMD decomposition; SVD decomposition; difference spectrum; weak single extraction;

  • Series：

    (C) Architecture/ Energy/ Traffic/ Electromechanics, etc; (I) Electronic Technology ＆ Information Science

  • Subject：

    Telecom Technology

  • Classification Code：

    TN911.4

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