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- W2948432747 abstract "The inverse acoustic scattering problems using multi-frequency backscattering far field patterns at isolated directions are studied. The underlying object could be point like scatterers, small scatterers, extended inhomogeneities and obstacles. A fast and robust direct sampling method is proposed for location and shape reconstruction of the underlying objects. To our best knowledge, this is the first numerical method for inverse obstacle/medium scattering problems with the multi-frequency sparse backscattering data. Some approximate uniqueness results have also been showed based on the weak scattering approximation and the Kirchhoff approximation. The theoretical basis of the direct sampling method is initially established based on these two approximations. Numerical examples in two dimensions are presented to validity the effectiveness and robustness of the proposed direct sampling method. In particular, the numerical reconstructions indicate that the direct sampling method also works very well beyond these two approximations." @default.
- W2948432747 created "2019-06-14" @default.
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- W2948432747 date "2019-06-05" @default.
- W2948432747 modified "2023-09-24" @default.
- W2948432747 title "Inverse acoustic obstacle problems with sparse multi-frequency backscattering data" @default.
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