TY - JOUR
T1 - An acoustic imaging method for layered non-reciprocal media
AU - Wapenaar, Kees
AU - Reinicke, Christian
N1 - Accepted Author Manuscript
PY - 2019
Y1 - 2019
N2 - Given the increasing interest for non-reciprocal materials, we propose a novel acoustic imaging method for layered non-reciprocal media. The method we propose is a modification of the Marchenko imaging method, which handles multiple scattering between the layer interfaces in a data-driven way. We start by reviewing the basic equations for wave propagation in a nonreciprocal medium. Next, we discuss Green’s functions, focusing functions, and their mutual relations, for a non-reciprocal horizontally layered medium. These relations form the basis for deriving the modified Marchenko method, which retrieves the wave field inside the non-reciprocal medium from reflection measurements at the boundary of the medium. With a numerical example we show that the proposed method is capable of imaging the layer interfaces at their correct positions, without artefacts caused by multiple scattering.
AB - Given the increasing interest for non-reciprocal materials, we propose a novel acoustic imaging method for layered non-reciprocal media. The method we propose is a modification of the Marchenko imaging method, which handles multiple scattering between the layer interfaces in a data-driven way. We start by reviewing the basic equations for wave propagation in a nonreciprocal medium. Next, we discuss Green’s functions, focusing functions, and their mutual relations, for a non-reciprocal horizontally layered medium. These relations form the basis for deriving the modified Marchenko method, which retrieves the wave field inside the non-reciprocal medium from reflection measurements at the boundary of the medium. With a numerical example we show that the proposed method is capable of imaging the layer interfaces at their correct positions, without artefacts caused by multiple scattering.
UR - https://iopscience.iop.org/0295-5075/125/3/34003/media/Supplementarymaterial.pdf
UR - http://www.scopus.com/inward/record.url?scp=85063590335&partnerID=8YFLogxK
U2 - 10.1209/0295-5075/125/34003
DO - 10.1209/0295-5075/125/34003
M3 - Article
SN - 0295-5075
VL - 125
JO - Europhysics Letters: a letters journal exploring the frontiers of physics
JF - Europhysics Letters: a letters journal exploring the frontiers of physics
IS - 3
M1 - 34003
ER -