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• W3105593508 abstract "This paper is devoted to the uniqueness in inverse acoustic scattering problems for the Helmholtz equation with phaseless far-field data. Some novel techniques are developed to overcome the difficulty of translation invariance induced by a single incident plane wave. In this paper, based on adding a reference ball as an extra artificial impenetrable obstacle (resp. penetrable homogeneous medium) to the inverse obstacle (resp. medium) scattering system and then using superpositions of a fixed plane wave and some point sources as the incident waves, we rigorously prove that the location and shape of the obstacle as well as its boundary condition or the refractive index can be uniquely determined by the modulus of far-field patterns. The reference ball technique in conjunction with the superposition of incident waves brings in several salient benefits. First, the framework of our theoretical analysis can be applied to both the inverse obstacle and medium scattering problems. Second, for inverse obstacle scattering, the underlying boundary condition could be of a general type and be uniquely determined. Finally, only a single frequency is needed." @default.
• W3105593508 created "2020-11-23" @default.
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• W3105593508 date "2018-06-05" @default.
• W3105593508 modified "2023-10-16" @default.
• W3105593508 title "Uniqueness results on phaseless inverse acoustic scattering with a reference ball" @default.
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• W3105593508 doi "https://doi.org/10.1088/1361-6420/aac53c" @default.
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