Accession Number : ADA325911

Title :   Full-Wave Inversion for Ocean Acoustical Tomography.

Descriptive Note : Final technical rept. Oct 94-Sep 96,

Corporate Author : HOUSTON UNIV TX

Personal Author(s) : Pai, D. M.

PDF Url : ADA325911

Report Date : MAY 1997

Pagination or Media Count : 12

Abstract : This report describes a wave-equation based inversion method in layered medium with potential applications to ocean acoustical tomography. This method caters specifically to the strong depth-dependence of the problem by building inversion on top of a depth-dependent background, as opposed to on a homogeneous background in traditional diffraction tomography methods. The method uses eigenmodes (defined with respect to the medium depth dependence) for data decomposition to mode-mode scattering amplitudes which are then used for medium extraction. This approach reduces the original 2-D medium inversion to a set of independent 1-D inversions.

Descriptors :   *SOUND TRANSMISSION, *UNDERWATER ACOUSTICS, *OCEAN MODELS, OCEAN WAVES, ACOUSTIC WAVES, DEPTH, ACOUSTIC ARRAYS, ACOUSTIC SIGNALS, INVERSION, ACOUSTIC SCATTERING, ACOUSTIC DATA, WAVE EQUATIONS.

Subject Categories : Acoustics
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE