Algorithm for computation of the acoustic plane-wave reflection coefficient of the ocean bottom

Martinez, David Richard

Algorithm for computation of the acoustic plane-wave reflection coefficient of the ocean bottom

1979

Martinez, David Richard

Submitted in partial fulfillment of the requirements for the degree of Electrical Engineer at the Woods Hole Oceanographic Institution and the Massachusetts Institute of Technology June 1979

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For a spherical acoustic wave incident on a horizontallystratified ocean bottom, the reflected pressure field and theplane-wave reflection coefficient are related through a two-dimensionalspatial-wavenumber Fourier transform. An algorithmis proposed to evaluate the plane-wave reflection coefficientfrom the bottom reflected field as a function of angle ofincidencè.The algorithm is based on the "Projection-Slice" theoremassociated with the two-dimensional Fourier transform. Thistechnique is implemented to evaluate the plane-wave reflectioncoefficient for a perfectly reflecting ocean bottom and for anisovelocity-low speed ocean bottom model.

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