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- 2014-05-28
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Description: ：A denoising method of block thresholding based on
DT-CWT (Dual-tree complex wavelet transform) is proposed,
aiming at the difficulty of extracting weak failure information in
machinery vibration signals. The presented method can obtain
higher signal-to-noise ratio (SNR) than NeighBlock and other
common methods based on orthonormal discrete wavelet trans-
form, because of improving asymptotic optimality of block
thresholding estimator and shift invariance of DT-CWT. It can
not only suppress white Gaussian noise, but also remove spike
pulse noise in impulsive signal effectively.
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基于复小波块阈值的降噪方法及其在机械故障诊断中的应用_陈志新.pdf
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