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arXiv 1609.07091math.AP
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多频电阻抗成像中夹杂物的识别

Identification of an inclusion in Multifrequency Electric Impedance Tomography

Habib Ammari, Faouzi Triki

摘要:

研究了多频电阻抗成像技术,通过注入一个电流对均匀背景介质中的导电夹杂进行成像。一个原始的谱分解的前向电导率问题的解决方案被用来检索柯西数据对应的极端情况下的完美导体。然后,我们证明了多频电阻抗断层成像的唯一性,并得到严格的稳定性估计的基础上的唯一延续的结果。我们在本文中的结果是相当令人惊讶的逆电导率问题,因为在一般情况下,需要无穷多个输入电流,以获得唯一性的电导率的测定。

英文摘要:

The multifrequency electrical impedance tomography is considered in order to image a conductivity inclusion inside a homogeneous background medium by injecting one current. An original spectral decomposition of the solution of the forward conductivity problem is used to retrieve the Cauchy data corresponding to the extreme case of perfect conductor. Using results based on the unique continuation we then prove the uniqueness of multifrequency electrical impedance tomography and obtain rigorous stability estimates. Our results in this paper are quite surprising in inverse conductivity problem since in general infinitely many input currents are needed in order to obtain the uniqueness in the determination of the conductivity.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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