Acoustic characterization of the seabed with a single-element time-reversal mirror

Oleg A. Godin; Ernst M. Uzhansky; Tsuwei Tan; Boris G. Katsnelson; Dexter Y. Tan; Thomas Renucci; Antoine Voyer; Ryan M. McMullin

doi:10.1016/j.apacoust.2023.109442

Acoustic characterization of the seabed with a single-element time-reversal mirror

Oleg A. Godin, Ernst M. Uzhansky, Tsuwei Tan, Boris G. Katsnelson, Dexter Y. Tan, Thomas Renucci, Antoine Voyer, Ryan M. McMullin

Department of Marine Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

Motivated by the 2012 Florida Straits Noise Interferometry Experiment, this paper investigates a time-reversal-based approach to acoustic remote sensing of the ocean. The signal processing mimics operation of a physical time-reversal mirror. The input data for the simulated time-reversal mirror can be obtained using either a compact, broadband sound source or cross-correlation of the diffuse noise recorded by spatially separated receivers. Low-frequency sound propagation is considered over ranges that are large compared to the water depth. The approach exploits the notion that the “best” focusing of the backpropagated time-reversed signal occurs at the “right point,” when the backpropagation takes place in the same propagation medium as the one, where the data have been acquired. Various metrics of the focusing quality are considered. A combination of spatial and temporal characteristics of the focus is proposed that leads to a robust and unique solution of the geoacoustic inverse problems considered for a single-element passive time-reversal mirror. Inputs with rather low signal-to-noise ratio prove acceptable, which is particularly important in the passive remote sensing context.

Original language	English
Article number	109442
Journal	Applied Acoustics
Volume	210
DOIs	https://doi.org/10.1016/j.apacoust.2023.109442
State	Published - Jul 2023

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky’s Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged.

Funding Information:
This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky's Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged.

Publisher Copyright:
© 2023

Keywords

Acoustic oceanography
Noise interferometry
Passive remote sensing
Time reversal
Underwater sound

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/j.apacoust.2023.109442

Cite this

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title = "Acoustic characterization of the seabed with a single-element time-reversal mirror",

abstract = "Motivated by the 2012 Florida Straits Noise Interferometry Experiment, this paper investigates a time-reversal-based approach to acoustic remote sensing of the ocean. The signal processing mimics operation of a physical time-reversal mirror. The input data for the simulated time-reversal mirror can be obtained using either a compact, broadband sound source or cross-correlation of the diffuse noise recorded by spatially separated receivers. Low-frequency sound propagation is considered over ranges that are large compared to the water depth. The approach exploits the notion that the “best” focusing of the backpropagated time-reversed signal occurs at the “right point,” when the backpropagation takes place in the same propagation medium as the one, where the data have been acquired. Various metrics of the focusing quality are considered. A combination of spatial and temporal characteristics of the focus is proposed that leads to a robust and unique solution of the geoacoustic inverse problems considered for a single-element passive time-reversal mirror. Inputs with rather low signal-to-noise ratio prove acceptable, which is particularly important in the passive remote sensing context.",

keywords = "Acoustic oceanography, Noise interferometry, Passive remote sensing, Time reversal, Underwater sound",

author = "Godin, {Oleg A.} and Uzhansky, {Ernst M.} and Tsuwei Tan and Katsnelson, {Boris G.} and Tan, {Dexter Y.} and Thomas Renucci and Antoine Voyer and McMullin, {Ryan M.}",

note = "Funding Information: This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky{\textquoteright}s Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged. Funding Information: This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky's Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2023",

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doi = "10.1016/j.apacoust.2023.109442",

language = "English",

volume = "210",

journal = "Applied Acoustics",

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AU - Uzhansky, Ernst M.

AU - Tan, Tsuwei

AU - Katsnelson, Boris G.

AU - Tan, Dexter Y.

AU - Renucci, Thomas

AU - Voyer, Antoine

AU - McMullin, Ryan M.

N1 - Funding Information: This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky’s Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged. Funding Information: This work was supported by the National Science Foundation [award OCE1657430], the Office of Naval Research [awards N00014-21WX012342 and N00014-22WX01287], and the Aharon and Ephraim Katzir Study Grant. Authors thank Dr. Kevin B. Smith for helpful discussions. Use of high-performance computational facilities of Prof. Y. Makovsky's Applied Marine Exploratory Laboratory at the University of Haifa is gratefully acknowledged. Publisher Copyright: © 2023

PY - 2023/7

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N2 - Motivated by the 2012 Florida Straits Noise Interferometry Experiment, this paper investigates a time-reversal-based approach to acoustic remote sensing of the ocean. The signal processing mimics operation of a physical time-reversal mirror. The input data for the simulated time-reversal mirror can be obtained using either a compact, broadband sound source or cross-correlation of the diffuse noise recorded by spatially separated receivers. Low-frequency sound propagation is considered over ranges that are large compared to the water depth. The approach exploits the notion that the “best” focusing of the backpropagated time-reversed signal occurs at the “right point,” when the backpropagation takes place in the same propagation medium as the one, where the data have been acquired. Various metrics of the focusing quality are considered. A combination of spatial and temporal characteristics of the focus is proposed that leads to a robust and unique solution of the geoacoustic inverse problems considered for a single-element passive time-reversal mirror. Inputs with rather low signal-to-noise ratio prove acceptable, which is particularly important in the passive remote sensing context.

AB - Motivated by the 2012 Florida Straits Noise Interferometry Experiment, this paper investigates a time-reversal-based approach to acoustic remote sensing of the ocean. The signal processing mimics operation of a physical time-reversal mirror. The input data for the simulated time-reversal mirror can be obtained using either a compact, broadband sound source or cross-correlation of the diffuse noise recorded by spatially separated receivers. Low-frequency sound propagation is considered over ranges that are large compared to the water depth. The approach exploits the notion that the “best” focusing of the backpropagated time-reversed signal occurs at the “right point,” when the backpropagation takes place in the same propagation medium as the one, where the data have been acquired. Various metrics of the focusing quality are considered. A combination of spatial and temporal characteristics of the focus is proposed that leads to a robust and unique solution of the geoacoustic inverse problems considered for a single-element passive time-reversal mirror. Inputs with rather low signal-to-noise ratio prove acceptable, which is particularly important in the passive remote sensing context.

KW - Acoustic oceanography

KW - Noise interferometry

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KW - Underwater sound

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VL - 210

JO - Applied Acoustics

JF - Applied Acoustics

M1 - 109442

ER -

Acoustic characterization of the seabed with a single-element time-reversal mirror

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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