|Table of Contents|

Non-Stationary Signals Analysis and Processing Based on Wavelet Transform(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2014年01期
Page:
63-69
Research Field:
Publishing date:

Info

Title:
Non-Stationary Signals Analysis and Processing Based on Wavelet Transform
Author(s):
Zhang Hanbo1; Yin Yi2; Yin Kuixi1
(1.School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China) (2.School of Computer Science and Technology,Nanjing Normal University,Nanjing 210023,China)
Keywords:
STFT; WT; non-stationary; time-frequency analysis
PACS:
TN95
DOI:
-
Abstract:
For the limitation of the Fourier transform,the wavelet transform and short-time Fourier transform are applied to typical non-stationary signals.The time-frequency characteristics obtained is more clear and accurate than traditional FFT spectrum analyze,indicating that the two time-frequency analysis methods are practical and advanced.And the multiresolution feature makes the analysis results better than short time Fourier transform.On the basis,study the anti-noise performance and choose appropriate parameter to get optimal results,improving the problem of poor frequency resolution at high frequencies of wavelet time-frequency analysis method.

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Last Update: 2014-03-31