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Analysis of Sensitivity Matrix for Electrical Resistance Tomography
2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2019Electrical Resistance Tomography (ERT) is a detection technique for reconstructing conductivity distribution from boundary measurements. However, the image reconstruction of ERT is an ill-posed and nonlinear inverse problem. There are many algorithms for solving inverse problems based on the sensitivity theory, the basic idea of which is to use the ...
Ziqi Liu, Yanbin Xu, Feng Dong 0001
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A kind of Electrical Resistance Tomography system
2011 International Conference on Electric Information and Control Engineering, 2011As a kind of on-line measurement technology possessing advantages of unperturbed, non-radiant and visualization, Electrical Resistance Tomography has wide application prospect in petroleum and chemical industrial production processes which are based continuous-phase conductive medium.
null Zhiqiang Zhang +3 more
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Cross‐borehole electrical resistivity tomography
SEG Technical Program Expanded Abstracts 1990, 1990Tomographic imaging (Hounsfield, 1974) has revolutionized medical X-ray diagnostics and is now a valuable technique in many areas of science. In geophysics, tomographic images have been constructed from both seismic and electromagnetic measurements (Anderson and Dziewonski, 1984; Dines and Lytle, 1979).
William D. Daily +2 more
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Regularization Parameter considering Electric Field Attenuation for Electrical Resistance Tomography
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), 2020Electrical resistance tomography (ERT) is widely used to reconstruct internal conductivity distribution of the measured field from the boundary data. The inverse problem of ERT is seriously ill-posed and nonlinear. Tikhonov regularization method is a well-known method to solve the problem.
Sitong Chen, Yanbin Xu, Feng Dong 0001
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Electrical resistance tomography for process applications
Measurement Science and Technology, 1996Measurement of electrical resistivity via four probes is widely used in a variety of applications ranging from geophysical prospecting to silicon wafer manufacture. Electrical resistivity tomography is an extension of this approach and is performed via an array of equi-spaced electrodes mounted into the periphery of a process vessel to map non ...
Fraser Dickin, Mi Wang
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QERT - Quadrupole Electrical Resistivity Tomography
2020<p><span>The quadrupole technique for geoelectrics yields the apparent resistivity in a tensorial form in contrast to the scalar apparent resistivity obtained from classical geoelectrics. The quadrupole method in geoelectrics has been applied in the past only for long offsets between transmitter and receiver.
Viktor Nawa, Andreas Junge
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DC Electrical Resistance Tomography Inversion
2021Direct current electrical resistivity imaging is provided by measuring the vertical and horizontal electrical potential variations of subsurface structures using surface and borehole records. To recover the resistivity tomograms from the observed data, a non-linear inverse problem is required to be iteratively solved. A 2.5-dimensional forward modeling
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Electrical resistivity tomography for petrophysical investigation
4th EEGS Meeting, 1998Determination of physical parameters of rock samples is essential to characterize their composition and structure. One of these parameters is electrical resistivity. Depending on porosity, resistivity of the pore fluid, saturation degree and matrix properties (esp.
A. Just +4 more
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Non-Iterative Imaging Method for Electrical Resistance Tomography
2009Electrical Resistance Tomography (ERT) is a body of methods and techniques aimed to reconstruct the spatial distribution of the resistivity of a material starting from the knowledge of boundary measurements such as, for instance, the Neumann-to-Dirichlet map.
Flavio Calvano +2 more
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An Electrical Resistive Tomography Based on Direct Information
2004An approach to non destructive testing suitable for solving a class of particular inverse problems whose peculiarity is to have the defect electrically accessible is proposed. The impact of this feature on the mathematical formulation of the problem and the advantages in terms of improvement of the sensitivity of the measurement system are discussed ...
MARTONE, Raffaele +2 more
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