Restoration of elastic and velocity parameters in diffraction tomography

Author

Kiselev, Yurii V. ; Troyan, Vladimir N.

Author_Institution

Phys. Fac., St. Petersburg Univ., Russia

fYear

1999

fDate

1999

Firstpage

97

Lastpage

102

Abstract

Numerical simulation of the solution of the (2-D, SV) inverse problem on restoration of elastic parameters (λ,μ) and mass density (ρ) of local (~λ_p) inhomogeneity by the diffraction tomography method based upon the first-order Born approximation is considered. The direct problem is solved by the finite difference method. For restoration of parameters of local inhomogeneities the algebraic methods and optimizing procedures are used. In the assumption of the linear relation between desired parameters an accuracy of their restoration is estimated by the numerical simulation

Keywords

diffraction; elastic waves; finite difference time-domain analysis; inhomogeneous media; inverse problems; tomography; wave propagation; algebraic methods; diffraction tomography; direct problem; elastic parameters; finite difference method; first-order Born approximation; inverse problem; linear relation; local inhomogeneities; local inhomogeneity; mass density; numerical simulation; optimizing procedures; restoration; velocity parameters; Approximation methods; Diffraction; Equations; Finite difference methods; Inverse problems; Numerical simulation; Scattering; Testing; Tomography; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Day on Diffraction, 1999. Proceedings. International Seminar

Conference_Location

St. Petersburg

Print_ISBN

5-7997-0156-9

Type

conf

DOI

10.1109/DD.1999.816188

Filename

816188