Time-frequency signal analysis and instantaneous frequency estimation: methodology, relationships and implementations

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Time-frequency signal analysis and instantaneous frequency estimation: methodology, relationships and implementations

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dc.contributor.author Boashash, Boualem
dc.contributor.author Lovell, B
dc.contributor.author Kootsookos, P
dc.date.accessioned 2011-05-05T05:20:37Z
dc.date.available 2011-05-05T05:20:37Z
dc.date.issued 1989-05
dc.identifier.citation IEEE International Symposium on Circuits and Systems, 1989, vol. 2, page(s): 1237 - 1242 en_US
dc.identifier.other Digital Object Identifier: 10.1109/ISCAS.1989.100579
dc.identifier.uri http://hdl.handle.net/10576/10677
dc.description This invited paper presents a comprehensive approach to the relationship between TFDs and IF estimation. en_US
dc.description.abstract A procedure is described for the time-frequency analysis of signals, based on time-frequency distributions (TFDs) and instantaneous frequency (IF) estimation. First, a suitable TFD is used to determine the number of signal components. Then, if the signal is monocomponent, the IF law can be estimated directly. For multicomponent signals, two-dimensional windowing in the time-frequency domain (a form of time-varying filtering) is used to isolate each component; IF estimation is then applied to the individual components. The periodic first moment of a TFD is used to estimate the IF. A suitable definition and of the periodic first moment is proposed, and the relationship of these estimators to others based on the central finite difference of the phase of the analytic signal is given. A TFD such as the Wigner-Ville distribution can be used to represent both IF and amplitude variations in the individual signal components at each stage of the analysis en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject Time-Frequency Distributions en_US
dc.subject TFDs en_US
dc.subject time-frequency filtering en_US
dc.subject multi-components TFD moment en_US
dc.subject Wigner-Ville Distribution en_US
dc.subject instantaneous amplitude en_US
dc.subject component separation en_US
dc.subject positivity en_US
dc.subject discrete-time TFDs en_US
dc.subject Bowtie functions en_US
dc.subject IF estimation en_US
dc.subject analytic signal en_US
dc.subject Central Finite Difference estimator en_US
dc.title Time-frequency signal analysis and instantaneous frequency estimation: methodology, relationships and implementations en_US
dc.type Article en_US

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