Title :
A new approach to the 2D inverse electromagnetic medium scattering problem: reconstruction of anisotropic objects
Author :
Rieger, W. ; Buchau, A. ; Huber, C. ; Lehner, G. ; Rucker, W.M.
Author_Institution :
Inst. fur Theor. der Elektrotech., Stuttgart Univ., Germany
fDate :
7/1/2000 12:00:00 AM
Abstract :
A new method for reconstructing the material properties of inhomogeneous lossy dielectric biaxial cylindrical objects is presented. The material properties are reconstructed using scattering data from time-harmonic electromagnetic plane waves with the electric field vector perpendicular to the cylindrical object (TE-polarization). The inverse scattering problem formulated as a nonlinear optimization problem is numerically solved using a variable metric method. This method involves exact first-order gradients, Numerical examples illustrate the efficiency of the algorithm
Keywords :
anisotropic media; electromagnetic wave polarisation; electromagnetic wave scattering; inverse problems; 2D inverse electromagnetic medium scattering; TE-polarization; anisotropic objects; electric field vector; first-order gradients; inverse scattering problem; material properties; nonlinear optimization problem; reconstruction; time-harmonic electromagnetic plane waves; variable metric method; Anisotropic magnetoresistance; Conductivity; Dielectric losses; Electromagnetic scattering; Finite element methods; Inverse problems; Material properties; Optimization methods; Permittivity; Tensile stress;
Journal_Title :
Magnetics, IEEE Transactions on
