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THREE-DIMENSIONAL NUMERICAL LOCALIZATION OF IMPERFECTIONS BASED ON A LIMIT MODEL IN ELECTRIC FIELD AND A LIMIT PERTURBATION MODEL
Authors:SMMefire LAMFA  CNRS UMR  Universite de Picardie  rSaint-Leu  Amiens Cedex  France
Institution:S.M.Mefire LAMFA,CNRS UMR 6140,Universite de Picardie,33 r.Saint-Leu,80039 Amiens Cedex 1,France
Abstract:From a limit model in electric field obtained by letting the frequency vanish in the timeharmonic Maxwell equations, we consider a limit perturbation model in the tangential boundary trace of the curl of the electric field for localizing numerically certain small electromagnetic inhomogeneities, in a three-dimensional bounded domain. We introduce here two localization procedures resulting from the combination of this limit perturbation model with each of the following inversion processes: the Current Projec...
Keywords:Inverse problems  Maxwell equations  Electric fields  Inhomogeneities  Electrical Impedance Tomography  Current Projection method  FFT  Numerical boundary measurements  Edge elements  Least square systems  Incomplete Modified Gram-Schmidt preconditioning  
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