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Author O'Toole, J.M.en_US
Author Mesbah, Men_US
Author Boashash, Ben_US
Available date 2011-10-19T06:24:28Zen_US
Publication Date 2010-08en_US
Publication Name IET Signal Processing
Citation O'Toole, J.M.; Mesbah, M.; Boashash, B., "Accurate and efficient implementation of the time-frequency matched filter," Signal Processing, IET , vol.4, no.4, pp.428,437, August 2010en_US
ISSN 1751-9675en_US
URI http://hdl.handle.net/10576/10768en_US
URI http://dx.doi.org/10.1049/iet-spr.2009.0104
Description This paper presents issues related to the discrete time–frequency matched filter which correlates two discrete TFDs (Additional details can be found in the comprehensive book on Time-Frequency Signal Analysis and Processing (see http://www.elsevier.com/locate/isbn/0080443354). In addition, the most recent upgrade of the original software package that calculates Time-Frequency Distributions and Instantaneous Frequency estimators can be downloaded from the web site: www.time-frequency.net. This was the first software developed in the field, and it was first released publicly in 1987 at the 1st ISSPA conference held in Brisbane, Australia, and then continuously updated).en_US
Abstract The discrete time-frequency matched filter should replicate the continuoustime-frequency matched filter, but the methods differ. To avoid aliasing, thediscrete method transforms the real-valued signal to the complex-valued analytic signal. The theory for the time-frequency matched filter does not consider the discrete case using the analytic signal. The authors find that theperformance of the matched filter degrades when using the analytic, rather than real-valued, signal. This performance degradation is dependent on thesignal-to-noise ratio and the signal type. In addition, the authors present a simple algorithm to efficiently compute the time-frequency matched filter. Thealgorithm with the real-valued signal, comparative to using the analytic signal, requires one-quarter of the computational load. Hence the real-valued signal -and not the analytic signal - enables an accurate and efficient implementationof the time-frequency matched filter.en_US
Language enen_US
Publisher Institution of Engineering and Technologyen_US
Subject Matched filtersen_US
Subject time-frequency analysisen_US
Subject complex-valued analytic signalen_US
Subject time-frequency matched filteren_US
Subject discrete time-frequency matched filteren_US
Subject real-valued signalen_US
Subject signal-to-noise ratioen_US
Subject quadratic time-frequency distributionsen_US
Subject TFDsen_US
Subject Wigner-Ville Distributionen_US
Subject time-frequency filteringen_US
Title Accurate and efficient implementation of the time–frequency matched filteren_US
Type Articleen_US


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