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On the basis of an introduction of the Wigner Higher Order spectra(WHOS) and a general class of time frequency higher order moment spectra ,the geophysical signal was analyzed using the higher order time frequency distributions(TFD).Simulation results obtained in this paper show that the higher order TFD (Wigner Bispectrum,Wigner Trispectrum and Choi Williams Trispectrum) have much better Time Frequency Concentration than the second order TFD ,and the reduced interference higher order TFD such as CWT can effectively reduce the cross term in multicomponent signals and simultaneously obtain high time frequency concentration.
On the basis of an introduction of the Wigner Higher Order spectra (WHOS) and a general class of time frequency higher order moment spectra, the geophysical signal was analyzed using the higher order time frequency distributions (TFD). Simulations results obtained in this paper show that the higher order TFD (Wigner Bispectrum, Wigner Trispectrum and Choi Williams Trispectrum) have much better Time Frequency Concentration than the second order TFD, and the reduced interference higher order TFD such as CWT can effectively reduce the cross term in multicomponent signals and peers high time frequency concentration.