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Updated: Jun 28, 2026
04:54
A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
Iterative high-resolution wavenumber inversion applied to broadband acoustic data.
Franck D Philippe1, Philippe Roux, Didier Cassereau
1Laboratoire Ondes et Acoustique, Ecole Supérieure de Physique et de Chimie Industrielles, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7587, Paris, France. franck.philippe@espci.fr
Summary
This study introduces an advanced iterative algorithm for analyzing acoustic waveguides. The method accurately determines wave propagation characteristics using broadband signals in ultrasonic and elastic systems.
Area of Science:
- Acoustics
- Wave Propagation
- Materials Science
Background:
- Wave propagation in acoustic waveguides is often modeled using discrete modes.
- Previous work established an iterative inversion algorithm for analyzing these modes.
- Generalizing this algorithm to broadband signals is crucial for practical applications.
Purpose of the Study:
- To generalize an iterative high-resolution wavenumber inversion algorithm for broadband signals.
- To apply the algorithm to experimental data from acoustic waveguides.
- To investigate wave propagation characteristics described by propagating modes.
Main Methods:
- Iterative high-resolution wavenumber inversion algorithm.
- Application to acoustic waveguides, including ultrasonic waveguides and elastic plates.
- Analysis of broadband signals and experimental data.
Main Results:
- The algorithm successfully generated dispersion curves for propagating modes.
- Accurate characterization of wave propagation in ultrasonic and elastic systems.
- Validation against spatial-temporal Fourier transform methods.
Conclusions:
- The generalized iterative inversion algorithm is effective for broadband signal analysis in acoustic waveguides.
- The method provides high-resolution dispersion curves for propagating modes.
- This approach offers a robust tool for studying wave phenomena in complex media.
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