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- W2912535044 abstract "We propose domain decomposition preconditioners for the solution of an integral equation formulation of forward and inverse acoustic scattering problems with point scatterers. We study both forward and inverse problems and propose preconditioning techniques to accelerate the iterative solvers. For the forward scattering problem, we extend the domain decomposition based preconditioning techniques presented for partial differential equations in {em A restricted additive Schwarz preconditioner for general sparse linear systems, SIAM Journal on Scientific Computing, 21 (1999), pp. 792--797}, to integral equations. We combine this domain decomposition preconditioner with a low-rank correction, which is easy to construct, forming a new preconditioner. For the inverse scattering problem, we use the forward problem preconditioner as a building block for constructing a preconditioner for the Gauss-Newton Hessian. We present numerical results that demonstrate the performance of both preconditioning strategies." @default.
- W2912535044 created "2019-02-21" @default.
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- W2912535044 date "2019-01-26" @default.
- W2912535044 modified "2023-09-27" @default.
- W2912535044 title "A domain decomposition preconditioning for the integral equation formulation of the inverse scattering problem" @default.
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