A Non-linear Model of Sensitivity Matrix for Electrical Capacitance Tomography
Résumé
The estimation of the permittivity distribution within a given volume by Electrical Capacitive Tomography relies on a relationship between the measured signal and the permittivity distribution, known as the sensitivity matrix. We show that relative permittivity variations must be lower than 25% to obtain errors smaller than 10% with the model whereas the permittivity can be scaled by up to 3.6 for the same error range with the proposed non- model. The errors remain below 15% over the whole range of permittivity.
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