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Factorization method for inverse obstacle scattering problem in three-dimensional planar acoustic waveguides |
Xue Qin(秦雪) |
School of Mathematical Sciences, Peking University, Beijing 100871, China |
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Abstract In this paper, we consider the inverse scattering problem of reconstructing a bounded obstacle in a three-dimensional planar waveguide from the scattered near-field data measured on a finite cylindrical surface containing the obstacle and corresponding to infinitely many incident point sources also placed on the measurement surface. The obstacle is allowed to be an impenetrable scatterer or a penetrable scatterer. We establish the validity of the factorization method with the near-field data to characterize the obstacle in the planar waveguide by constructing an outgoing-to-incoming operator which is an integral operator defined on the measurement surface with the kernel given in terms of an infinite series.
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Received: 11 May 2018
Revised: 14 August 2018
Accepted manuscript online:
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PACS:
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02.30.Zz
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(Inverse problems)
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02.30.Tb
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(Operator theory)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61421062 and 61520106004) and the Microsoft Research Fund of Asia. |
Corresponding Authors:
Xue Qin
E-mail: qinxue0406@pku.edu.cn
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Cite this article:
Xue Qin(秦雪) Factorization method for inverse obstacle scattering problem in three-dimensional planar acoustic waveguides 2018 Chin. Phys. B 27 100203
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