Inverse scattering for surface impedance from phase-less far field data

被引:54
|
作者
Ivanyshyn, Olha [1 ]
Kress, Rainer [1 ]
机构
[1] Univ Gottingen, Inst Numer & Angew Math, D-37083 Gottingen, Germany
关键词
Inverse scattering; Impedance boundary condition; Phase-less far field data; Regularized Newton iterations; SHAPE; OBSTACLE;
D O I
10.1016/j.jcp.2011.01.038
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
We present a numerical comparison of a regularized Newton-type method and a direct method for reconstructing the surface impedance function of a three dimensional acoustic scatterer with known shape from the full far field pattern for scattering of one incident time-harmonic plane wave. Furthermore, we propose a modification of the Newton-type algorithm to recover a real-valued surface impedance from phase-less far field data. Numerical reconstructions illustrate the feasibility of the methods. (c) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:3443 / 3452
页数:10
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