Passive correlation imaging of a buried scatterer

Eric Larose; Oleg I. Lobkis; Richard L. Weaver

doi:10.1121/1.2200049

Passive correlation imaging of a buried scatterer

Eric Larose, Oleg I. Lobkis, Richard L. Weaver

Physics

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

Abstract

Waveforms obtained by correlation of diffuse fields are now widely used to estimate times of flight and ballistic Green's functions. Theory, however, predicts that such passively obtained waveforms should equal the full Green function of a medium, and thereby convey information on the details of a structure and the presence of isolated scatterers. Here we investigate diffuse field correlations in a reverberant elastic body and demonstrate that their shear and Rayleigh waves allow us to image internal and surface features. Resolution in the resulting images is comparable to standard medical and seismic images.

Original language	English (US)
Pages (from-to)	3549-3552
Number of pages	4
Journal	Journal of the Acoustical Society of America
Volume	119
Issue number	6
DOIs	https://doi.org/10.1121/1.2200049
State	Published - Jun 2006

ASJC Scopus subject areas

Arts and Humanities (miscellaneous)
Acoustics and Ultrasonics

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10.1121/1.2200049

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abstract = "Waveforms obtained by correlation of diffuse fields are now widely used to estimate times of flight and ballistic Green's functions. Theory, however, predicts that such passively obtained waveforms should equal the full Green function of a medium, and thereby convey information on the details of a structure and the presence of isolated scatterers. Here we investigate diffuse field correlations in a reverberant elastic body and demonstrate that their shear and Rayleigh waves allow us to image internal and surface features. Resolution in the resulting images is comparable to standard medical and seismic images.",

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note = "Funding Information: This work was funded by the National Science Foundation Grant No. EAR 0543328 and by the University of Illinois Critical Research Initiatives. The authors wish to thank A. Derode, M. Campillo, and B. van Tiggelen for a fruitful discussion and support. E. Larose acknowledges a Lavoisier grant from the French Ministry of Foreign Affairs.",

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AU - Larose, Eric

AU - Lobkis, Oleg I.

AU - Weaver, Richard L.

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PY - 2006/6

Y1 - 2006/6

N2 - Waveforms obtained by correlation of diffuse fields are now widely used to estimate times of flight and ballistic Green's functions. Theory, however, predicts that such passively obtained waveforms should equal the full Green function of a medium, and thereby convey information on the details of a structure and the presence of isolated scatterers. Here we investigate diffuse field correlations in a reverberant elastic body and demonstrate that their shear and Rayleigh waves allow us to image internal and surface features. Resolution in the resulting images is comparable to standard medical and seismic images.

AB - Waveforms obtained by correlation of diffuse fields are now widely used to estimate times of flight and ballistic Green's functions. Theory, however, predicts that such passively obtained waveforms should equal the full Green function of a medium, and thereby convey information on the details of a structure and the presence of isolated scatterers. Here we investigate diffuse field correlations in a reverberant elastic body and demonstrate that their shear and Rayleigh waves allow us to image internal and surface features. Resolution in the resulting images is comparable to standard medical and seismic images.

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Passive correlation imaging of a buried scatterer

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