
	Information Technology Journal
	Year: 2013 \| Volume: 12 \| Issue: 7 \| Page No.: 1394-1399 DOI: 10.3923/itj.2013.1394.1399

Kurtosis Based Time-frequency Analysis Scheme for Stationary or Non-stationary Signals with Transients

June-Yule Lee

Abstract: This study presented an efficient time-frequency analysis scheme for vibration signals with transients. The scheme was developed based on the short-time Fourier transform with varying window size over time. The variable window size was determined by the local kurtosis. In regions where the kurtosis measured relatively high, a large window size was applied to improve the resolution of time-frequency image. Conversely, a small window size was applied to regions where the kurtosis measured relatively low. The method was tested by simulation signals and vibration signals in SNR 10 dB Gaussian noise. The results showed that the stationary or non-stationary signals with transients can be retrieved in time-frequency image.

PDF Fulltext XML References Citation Report Citation

RELATED ARTICLES:

•	Parameter Estimation of the Extended Generalized Gaussian Family Distributions using Maximum Likelihood Scheme

How to cite this article:

June-Yule Lee , 2013. Kurtosis Based Time-frequency Analysis Scheme for Stationary or Non-stationary Signals with Transients. Information Technology Journal, 12: 1394-1399.

DOI: 10.3923/itj.2013.1394.1399

URL: https://scialert.net/abstract/?doi=itj.2013.1394.1399

COMMENT ON THIS PAPER

Navigation


		Online First
		Current Issue
		Previous Issues
		Editorial Board
		Submit a Manuscript
		Guide to Authors
		Subscribe to E-alerts

Indexed In


		ASCI-Database
		Asian Digital Library
		Google Scholar

Science Alert