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Simultaneous Reconstruction of Conductivity and Permittivity in Electrical Impedance Tomography

As a visual detection technology, Electrical Impedance Tomography (EIT) can reconstruct the distribution of two types of electric property information (conductivity and permittivity) in target region theoretically. This characteristic of EIT can better compensate for the shortcomings of traditional ERT/ECT dual-modal systems. However, as a technology with great development potential, complex-value EIT has not been investigated systematically. This paper introduces how to establish EIT circular field simulation model, and probes into reconstruction methods of dual-modal information preliminarily. By analyzing the experimental results, it is verified that the data processing method that take complex data as a whole can obtain dual-modal information with complementarity. Complex-value EIT technology can improve system resolution and expand system measuring range.