Time-frequency distributions of time-dependent hydrophysical processes and fields

Algorithms are analyzed and implemented for estimating the spectra of complex, multicomponent, time-dependent signals on the basis of time-frequency distributions (TFDs) of the pseudo-Wigner and Cohen types and distributions with a test function of the chirp type. The resolution and noise-immunity characteristics are estimated, along with the methodological errors of reconstruction of the instantaneous-frequency paths and amplitude nonstationarity of multicomponent signals for TFD algorithms.