Title :
A new approach to the 2D-TE inverse electromagnetic medium scattering problem
Author :
Rieger, W. ; Haas, M. ; Huber, C. ; Lehner, G. ; Rucker, W.M.
Author_Institution :
Inst. fur Theor. der Elektrotech., Stuttgart Univ., Germany
Abstract :
A method for reconstructing the material properties of inhomogeneous lossy dielectric 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 :
electric fields; electrical conductivity; electromagnetic wave polarisation; electromagnetic wave scattering; gradient methods; harmonic analysis; inhomogeneous media; inverse problems; optimisation; permittivity; 2D-TE inverse EM medium scattering; TE-polarization; algorithm efficiency; conductivity profile; cylindrical object; electric field vector; exact first-order gradients; inhomogeneous lossy dielectric cylindrical objects; inverse scattering problem; material properties reconstruction; nonlinear optimization; permittivity profile; scattering data; time-harmonic electromagnetic plane waves; variable metric method; Dielectric losses; Electromagnetic fields; Electromagnetic scattering; Inverse problems; Material properties; Nonuniform electric fields; Optimization methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1998. IEEE
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-4478-2
DOI :
10.1109/APS.1998.702035
