... methodsoftenrefertowavelettransform.Inwaveletanalysis ,a signal is analyzed at different scales or resolution: largertime and smaller scale window is used to look at theapproximate stationarity of the signal and smaller time and larger ... 467–482, 2005.[19] A. Raad, J. Antoni, and M. Sidahmed, “Indicators of cyclo-stationarity: theory and application to gear fault monitoring,”Mechanical Systems and Signal Processing,vol.22,no.3,pp.574–587, ... Bendat and A. G. Piersol, Random Data: Analysis and Measurement Procedures, John Wiley & Sons, New York, NY,USA, 3rd edition, 2000.Hindawi Publishing CorporationEURASIP Journal on Advances...