A resolution performance measure for quadratic time-frequency distributions

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A resolution performance measure for quadratic time-frequency distributions

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dc.contributor.author Boashash, Boualem
dc.contributor.author Sucic, V
dc.date.accessioned 2011-05-25T19:52:09Z
dc.date.available 2011-05-25T19:52:09Z
dc.date.issued 2000
dc.identifier.citation Proceedings of the Tenth IEEE workshop Statistical Signal and Array Processing, 2000,pages 584 en_US
dc.identifier.isbn 0-7803-5988-7
dc.identifier.other Digital Object Identifier : 10.1109/SSAP.2000.870192
dc.identifier.uri http://hdl.handle.net/10576/10692
dc.description This paper introduced a new measure that allows an objective comparison of time-frequency methods in terms of resolution, as well as a methodology to define new high-resolution TFDs. 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 This paper presents two novel results which are significant for the application of time-frequency signal analysis techniques to real life signals. First, we introduce a measure for comparing the resolution performance of TFDs in separating closely spaced components in the time-frequency domain. The measure takes into account key attributes of TFDs such as main-lobes, side-lobes, and cross-terms. The introduction of this measure is an improvement of current techniques which rely on visual inspection of plots. The second result consists in proposing a methodology for designing high resolution quadratic TFDs for the time-frequency analysis of multicomponent signals when components are close to each other. A recently introduced TFD, the B-distribution, and its modified version are defined using this methodology. Finally, the performance comparison of quadratic TFDs using the proposed resolution measure shows that the B-distribution outperforms existing quadratic TFDs in resolving closely spaced components in the time-frequency domain. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject Bandwidth en_US
dc.subject Energy measurement en_US
dc.subject Energy resolution en_US
dc.subject Frequency measurement en_US
dc.subject Signal analysis en_US
dc.subject Signal processing en_US
dc.subject Signal resolution en_US
dc.subject Space technology en_US
dc.subject Spectrogram en_US
dc.subject time-frequency analysis en_US
dc.subject signal resolution en_US
dc.subject B-distribution en_US
dc.subject TFDs en_US
dc.subject cross-terms en_US
dc.subject main-lobes en_US
dc.subject multi-component signals en_US
dc.subject quadratic time-frequency distributions en_US
dc.subject resolution performance en_US
dc.subject side-lobes en_US
dc.subject time-frequency signal analysis en_US
dc.subject objective time-frequency measure en_US
dc.subject TFD design en_US
dc.title A resolution performance measure for quadratic time-frequency distributions en_US
dc.type Article en_US

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