Marchenko Equation for Time Reversal Imaging in an Underwater Acoustic Waveguide
Time reversal (TR) has been used to acoustic imaging to recover the spatial distribution of scatterers or the source location in an underwater acoustic waveguide. This study presents a method based on Marchenko equation, and we focus on achieving acoustic source distribution inside the medium. However, to achieve accurate results for TR imaging, a detailed model of the medium should be known. Otherwise, artifacts can emerge and the results will suffer a lot from model mismatch. Our proposed methodology aims to eliminate the artifacts caused by model mismatch, and to improve the results of imaging weaker sources. To achieve this, reflection data must be acquired from a vertical array and a transducer array is also needed to emit the signal iteratively.
4 pages.-- PACS numbers: 05.45.Xt, 87.10.+e.-- ArXiv pre-print: http://arxiv.org/abs/nlin.CD/0512009.-- Final full-text version of the paper available at: http://dx.doi.org/10.1103/PhysRevE.73.055202.