By Topic

Estimation of the Parameters of Lorentz Dispersive Media Using a Time-Domain Inverse Scattering Technique

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Papadopoulos, T.G. ; Dept. of Math., Phys., & Comput. Sci., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece ; Rekanos, I.T.

A time-domain inverse scattering technique for estimating the parameters of Lorentz dispersive scatterers is proposed. The estimation of the optical and the static relative permittivity, the resonant frequency, and the damping factor of the scatterer is based on the minimization of a cost function. The latter describes the discrepancy between measured and estimated values of the electric field obtained around the scatterer domain when it is illuminated by wideband excitations. The Fréchet derivatives of the cost function with respect to the scatterer properties are derived analytically. These derivatives can be utilized by any gradient-based optimization algorithm, while in the present work, the Polak-Ribière optimization algorithm has been utilized. Numerical results related to the reconstruction of layered Lorentz media show the efficiency of the proposed method.

Published in:

Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 2 )