Nonstationary signal analysis is one of the main topics in the field of machinery fault
diagnosis. Time–frequency analysis can identify the signal frequency components, reveals …

This section of the User's Guide describes how to begin using the Higher-Order Spectral
Analysis Toolbox for your signal processing applications. It assumes familiarity with basic …

The normal operation of marine diesel engines ensures the scheduled completion and
efficiency of a trip. Any failures may result in significant economic losses and severe …

The last fifteen years have witnessed a tremendous resurgence in research and applications
in the area of higher-order statistics (HOS), a broad term encompassing statistical …

Compressor response investigation in nearly unstable operating conditions, like rotating
stall and incipient surge, is a challenging topic nowadays in the turbomachinery research …

One of the fundamental problems of time–frequency analysis that remained unsolved until
recently is the time–frequency representation of signals with an arbitrary non-linear …

Generalized time–frequency spectrum, time–frequency bispectrum and time–frequency
trispectrum are calculated from the in-situ data record to investigate the non-stationarity and …

When the complex Morlet function (CMOR) is used as a wavelet basis, it is necessary to
select optimal bandwidth and center frequency. However, the method to select the optimal …

Systems able to retrieve objects embedded in the seafloor are of crucial importance for
many different tasks. An experimental assessment of a detector applying the" classify-before …

Combining local mean decomposition (LMD) and Wigner higher moment spectrum (WHOS),
a bearing fault diagnosis method was proposed, called LMD-WHOS method. Firstly, LMD …