MATRIX GREENS-FUNCTION FORMALISM IN ACOUSTIC INTRASCOPY PROBLEMS

The formulation of the inverse diffraction problem for scalar acoustic s on the basis of the formalism of the matrix Green's function is disc ussed. This formalism greatly simplifies the analysis of many acoustic flaw-detection problems by: facilitating the identification of scatte rer types; reducing the required number of spatial and frequency measu rements of the scattered field for reconstruction of the scatterer; pr oviding a natural approach to the solution of inverse problems for sca ttering by flaws with clearly delineated boundaries.