A two-dimensional tomography model for the oceanic inhomogeneity reconstruction with wave and ray representations of acoustic field

Abstract

A model reconstruction of two-dimensional combined oceanic inhomogeneities (of refractive and kinetic types) in tomographic experiments with ray and wave representations of acoustic field is considered. The possibility of a complete reconstruction of two-dimensional flows from the scattering data alone is illustrated. For the realization of the tomographic scheme, a nonorthogonal redundant basis consisting of a number of intersecting stripes is used. The results of reconstruction are presented for model inhomogeneities of kinetic and combined (refractive-kinetic) types. The iterative reconstruction of the flow velocity vector distribution is considered. The tomographic problem in the ray representation is solved by taking into account both the time delays in the signal propagation along the rays and the ray trajectory distortions due to the inhomogeneity of the medium.