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- W2610475013 abstract "We are concerned with the inverse scattering problem of recovering an inhomogeneous medium by the associated acoustic wave measurement. We prove that under certain assumptions, a single far-field pattern determines the values of a perturbation to the refractive index on the corners of its support. These assumptions are satisfied for example in the low acoustic frequency regime. As a consequence if the perturbation is piecewise constant with either a polyhedral nest geometry or a known polyhedral cell geometry, such as a pixel or voxel array, we establish the injectivity of the perturbation to far-field map given a fixed incident wave. This is the first unique determinancy result of its type in the literature, and all of the existing results essentially make use of infinitely many measurements." @default.
- W2610475013 created "2017-05-12" @default.
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- W2610475013 date "2017-05-02" @default.
- W2610475013 modified "2023-09-26" @default.
- W2610475013 title "Recovering piecewise constant refractive indices by a single far-field pattern" @default.
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- W2610475013 doi "https://doi.org/10.48550/arxiv.1705.00815" @default.
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