Title :
Inverse electromagnetic medium scattering using a variable metric method
Author :
Rieger, W. ; Haas, M. ; Huber, C. ; Lehner, G. ; Rucker, W.M.
Author_Institution :
Inst. fur Theor. der Elektrotech., Stuttgart Univ., Germany
Abstract :
The 2D inverse electromagnetic scattering problem of reconstructing the material properties of inhomogeneous lossy dielectric cylindrical objects is considered. The material properties are reconstructed using scattering data from time-harmonic electromagnetic TM-polarized plane waves. The inverse scattering problem formulated as a nonlinear optimization problem is numerically solved using a variable metric method. This method is a quasi-Newton method and involves exact first-order gradients. Numerical examples are presented to show the efficiency of the algorithm.
Keywords :
Newton method; electromagnetic wave polarisation; electromagnetic wave propagation; electromagnetic wave scattering; inverse problems; optimisation; 2D inverse EM scattering problem; algorithm efficiency; first-order gradients; inhomogeneous lossy dielectric cylindrical objects; inverse electromagnetic medium scattering; material properties reconstruction; nonlinear optimization problem; quasi-Newton method; scattering data; time-harmonic TM-polarized plane waves; variable metric method; Dielectric losses; Electric variables measurement; Electromagnetic scattering; Finite element methods; Frequency; Integral equations; Inverse problems; Material properties; Nonuniform electric fields; Permittivity;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.625550
