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Parameter sensitivity in nonlinear and dissipative time-reversed acoustics
Responsible organisation
1998 (English)Conference paper (Refereed) PublishedAlternative title
Parameterkänslighet i ickelinjär och dissipativ tidsomvänd akustik (Swedish)
Abstract [en]

Time-reversed nonlinear acoustics has shown that a propagated signal retains information about the original signal after shock formation and even after merging of shocks. This information is dependent on the accuracy of the measured or calculated data . Presented here is a more detailed analysis of the estimation of dimensionless and real parameters in the problem - the original amplitude, the distance traveled and the dissipation over non- linearity ratio. It is shown that the methods are fairly insensitive to noise.

Abstract [sv]

Tidsomvänd ickelinjär akustik har visat att a signal kvarhåller information om dess begynnelsetillstånd till och med efter sammangående av stötarna. Här visas hur parametrarna i problemet kan uppskattas: begynnelseamplituden, fortplantningsavståndet och förhållandet mellan dämpning och ickelinjaritet.

Place, publisher, year, edition, pages
Seattle, WA: Acoust. Soc. of Am. , 1998.
Keyword [en]
timereversal, backpropagation, acoustics, nonlinear
National Category
Signal Processing Applied Mechanics
URN: urn:nbn:se:bth-9839Local ID: 1-56396-815-0OAI: diva2:837800
16th Int. Congress on Acoustics and 135th Meeting of Acoust. Soc. of Am.
Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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Hedberg, Claes
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ReferencesLink to record
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