Determination of a small elliptical anomaly in electrical impedance tomography using minimal measurements
Year: 2024
Type: article
Abstract: We consider the problem of determining a small elliptical conductivity anomaly in a unit disc from boundary measurements. The conductivity of the anomaly is assumed to be a small perturbation from the constant background. A measurement of voltage across two point-electrodes on the boundary through which a constant current is passed. We further assume the limiting case when the distance between two electrodes go to zero, creating a dipole field. We show that three such measurements suffice to locate the anomaly size and location inside the disc. Two further measurements are needed to obtain the aspect ratio and the orientation of the ellipse. The investigation includes the studies of the stability of the inverse problem and optimal experiment design.
Source: Inverse Problems
Authors: Gaoming Chen, Fadil Santosa, Aseel Titi
Institutions: Renmin University of China, Johns Hopkins University
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,165
Funder: Johns Hopkins University
OpenAlex ID: W4402631957