Title :
Inverse scattering: an iterative numerical method for electromagnetic imaging
Author :
Joachimowicz, N. ; Pichot, C. ; Hugonin, J.P.
Author_Institution :
Equipe d´Electromagnetisme, Ecole Superieure d´Electricite, Gif-sur- Yvette, France
Abstract :
The authors propose a spatial iterative algorithm for electromagnetic imaging based on a Newton-Kantorovich procedure for the reconstruction of the complex permittivity of inhomogeneous lossy dielectric objects with arbitrary shape. Starting from integral representation of the electric field and using the moment method, this technique has been developed for 2-D (for TM and TE polarization cases) objects as well as for 3-D objects. Its performance has been compared with spectral techniques of classical diffraction tomography, the modified Newton method, and the pseudo-inverse method.<>
Keywords :
electromagnetic wave scattering; inverse problems; iterative methods; microwave imaging; 2-D objects; 3-D objects; Newton-Kantorovich procedure; TE polarization; TM polarisation; complex permittivity; electric field; electromagnetic imaging; electromagnetic scattering; inhomogeneous lossy dielectric objects; inverse scattering; microwave imaging; moment method; numerical method; spatial iterative algorithm; Dielectric losses; Image reconstruction; Inverse problems; Iterative algorithms; Iterative methods; Moment methods; Nonuniform electric fields; Permittivity; Shape; Tellurium;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
