Nonlinear integral equations for shape reconstruction in the inverse interior scattering problem

Nonlinear integral equations for shape reconstruction in the inverse interior scattering problem
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逆内散射问题中形状重建的非线性积分方程

DOI:
10.1088/0266-5611/27/3/035005
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发表时间:
2011-03
期刊:
影响因子:
2.1
通讯作者:
Cakoni, Fioralba
Cakoni, Fioralba
中科院分区:
数学2区
文献类型:
--
作者:
Qin, Hai-Hua;Cakoni, Fioralba

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在本文中,我们考虑的逆散射问题恢复的形状,一个完美的导体腔从一个源和几个测量放置在一个曲线内的腔。在对腔体尺寸的限制性假设下,给出了多个激励的唯一性定理。基于一个系统的非线性和不适定的积分方程的未知边界,我们应用正则化牛顿迭代法来找到边界。我们提出的方法的数学基础,并给出了几个数值例子,以显示该方法的可行性。
In this paper, we consider the inverse scattering problem of recovering the shape of a perfectly conducting cavity from one source and several measurements placed on a curve inside the cavity. Under restrictive assumptions on the size of the cavity, a uniqueness theorem for finitely many excitations is given. Based on a system of nonlinear and ill-posed integral equations for the unknown boundary, we apply a regularized Newton iterative approach to find the boundary. We present the mathematical foundation of the method and give several numerical examples to show the viability of the method.
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