Time-varying higher-order spectra, generalised Wigner-Ville distribution and the analysis of underwater acoustic data

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Time-varying higher-order spectra, generalised Wigner-Ville distribution and the analysis of underwater acoustic data

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dc.contributor.author Boashash, Boualem
dc.contributor.author Frazer, G
dc.date.accessioned 2011-06-02T18:06:39Z
dc.date.available 2011-06-02T18:06:39Z
dc.date.issued 1992-03
dc.identifier.citation 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing, 1992. ICASSP-92., Issue Date : 23-26 Mar 1992, Volume : 5, page(s): 193 en_US
dc.identifier.issn 1520-6149
dc.identifier.uri http://hdl.handle.net/10576/10698
dc.description This paper applied TVHOS to real signals provided by DSTO. A software package that calculates IF estimates and TFDs can be downloaded from the web site: www.time-frequency.net en_US
dc.description.abstract The Wigner-Ville distribution (WVD) is a second-order time-frequency representation in the sense that it is able to give ideal energy concentration for quadratic phase FM signals, and its expectation value is a second order time-varying spectrum. The generalized WVD (GWVD) is defined by extension so as to achieve ideal energy concentration for higher order phase laws. In addition, by taking the expected value of the GWVD, time-varying higher-order spectra can be defined. The merit of including time-varying higher-order spectral information when analyzing underwater acoustic signals is demonstrated. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject TVHOS en_US
dc.subject time-varying higher order spectra en_US
dc.subject time-frequency analysis en_US
dc.subject IF en_US
dc.subject non-linear FM signals en_US
dc.subject generalized WVD en_US
dc.subject Generalized TFDs en_US
dc.subject bi-spectrum en_US
dc.subject time-frequency distributions en_US
dc.title Time-varying higher-order spectra, generalised Wigner-Ville distribution and the analysis of underwater acoustic data en_US
dc.type Article en_US

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