research-article

Matched representations and filters for guided waves

Authors:

Grégoire Le Touzé,

Barbara Nicolas,

Jérôme I. Mars,

Jean-Louis LacoumeAuthors Info & Claims

IEEE Transactions on Signal Processing, Volume 57, Issue 5

Pages 1783 - 1795

https://doi.org/10.1109/TSP.2009.2013907

Published: 01 May 2009 Publication History

Abstract

We propose time-frequency methods to filter dispersive guided wave signals. Guided waves occur in acoustical propagation (oceanic waveguides), geophysics (layered medium), or optics (dielectric optical waveguides). In waveguides, signals can be decomposed into normal modes which contain information on environmental parameters and source localization. As modes present nonlinear time-frequency evolution, modal filtering is not possible with conventional tools. To overcome the difficulty presented by these nonlinearties, we have developed matched tools: matched frequency and time-frequency representations and the modal filterings associated with these representations. The tools developed are based on unitary equivalence principle. Performance and robustness of different proposed modal filters are evaluated and compared. All of these tools can be used for both source localization and environmental inversion.

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Cited By

Perelli ADe Marchi LFlamigni LMarzani AMasetti G(2015)Best basis compressive sensing of guided waves in structural health monitoringDigital Signal Processing10.1016/j.dsp.2015.04.00142:C(35-42)Online publication date: 1-Jul-2015
https://dl.acm.org/doi/10.1016/j.dsp.2015.04.001
Lopatka MTouzé GNicolas BCristol XMars JFattaccioli D(2010)Underwater broadband source localization based on modal filtering and features extractionEURASIP Journal on Advances in Signal Processing10.1155/2010/3041032010(1-7)Online publication date: 1-Jan-2010
https://dl.acm.org/doi/10.1155/2010/304103

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Published In

cover image IEEE Transactions on Signal Processing

IEEE Transactions on Signal Processing Volume 57, Issue 5

May 2009

396 pages

ISSN:1053-587X

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Copyright © 2009.

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IEEE Press

Publication History

Published: 01 May 2009

Accepted: 20 November 2008

Received: 27 February 2008

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Cited By

Perelli ADe Marchi LFlamigni LMarzani AMasetti G(2015)Best basis compressive sensing of guided waves in structural health monitoringDigital Signal Processing10.1016/j.dsp.2015.04.00142:C(35-42)Online publication date: 1-Jul-2015
https://dl.acm.org/doi/10.1016/j.dsp.2015.04.001
Lopatka MTouzé GNicolas BCristol XMars JFattaccioli D(2010)Underwater broadband source localization based on modal filtering and features extractionEURASIP Journal on Advances in Signal Processing10.1155/2010/3041032010(1-7)Online publication date: 1-Jan-2010
https://dl.acm.org/doi/10.1155/2010/304103

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