How to estimate the Green’s function of a heterogeneous medium between two passive sensors? Application to acoustic waves
- 13 October 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (15), 3054-3056
- https://doi.org/10.1063/1.1617373
Abstract
The exact Green’s function of a heterogeneous medium can be retrieved from the crosscorrelation of the fields received by two passive sensors. We propose a physical interpretation based on time-reversal symmetry. We address the issue of causality and show the role of multiple scattering for the reconstruction of the Green’s function. Ultrasonic experimental results are presented to illustrate the argument. Applications to geophysics and ocean acoustics are discussed.Keywords
This publication has 8 references indexed in Scilit:
- Recovering the Green’s function from field-field correlations in an open scattering medium (L)The Journal of the Acoustical Society of America, 2003
- Green’s function estimation using secondary sources in a shallow water environmentThe Journal of the Acoustical Society of America, 2003
- Long-Range Correlations in the Diffuse Seismic CodaScience, 2003
- Overcoming the Diffraction Limit in Wave Physics Using a Time-Reversal Mirror and a Novel Acoustic SinkPhysical Review Letters, 2002
- On the emergence of the Green’s function in the correlations of a diffuse fieldThe Journal of the Acoustical Society of America, 2001
- Ultrasonics without a Source: Thermal Fluctuation Correlations at MHz FrequenciesPhysical Review Letters, 2001
- Random multiple scattering of ultrasound. II. Is time reversal a self-averaging process?Physical Review E, 2001
- Multiple scattering of soundWaves in Random Media, 2000