SPECTRAL ANALYSIS FOR NON-STATIONARY SIGNALS FROM MECHANICAL MEASUREMENTS: A PARAMETRIC APPROACH

Non-parametric time–frequency methods for spectral estimation are increasingly used in the analysis of non-stationary signals. However, neither have their performance and limits of application been completely investigated nor has a comparison with other methods, such as parametric ones, been clearly established. This paper deals with the analysis of non-stationary signals of interest in mechanics, and more specifically,