Title :
A new approach in identification of dielectric constants
Author :
Wang, Yun ; Banks, H.T. ; Buksas, M.W.
Author_Institution :
Math. Products Div., Armstrong Lab./OES, Brooks AFB, TX, USA
Abstract :
In this note, we present a time domain approach for study of electromagnetic inverse problems. Maxwell´s equations coupled with a generalized dispersion model are considered. The dispersion model is an electric polarization equation given in terms of a convolution of the electric field with an impulse response function. Well posedness is presented for a one-dimensional dispersive medium case. Reconstruction (identification) of electromagnetic property profiles of media is demonstrated via numerical examples. Parameters representing the electromagnetic property of a medium are the static permittivity, relaxation time, natural frequency, static conductivity, etc. The number of parameters involved depend on the choice of parameterization in the polarization equation
Keywords :
Maxwell equations; bioelectric phenomena; distributed parameter systems; electromagnetic wave scattering; inverse problems; parameter estimation; permittivity; transient response; Maxwell´s equations; dielectric constant identification; electric field convolution; electric polarization equation; electromagnetic inverse problems; electromagnetic property profile reconstruction; impulse response function; natural frequency; one-dimensional dispersive medium case; relaxation time; static conductivity; static permittivity; time-domain approach; well-posedness; Biological system modeling; Conductivity; Dielectric constant; Differential equations; Electromagnetic scattering; Electromagnetic wave polarization; Inverse problems; Maxwell equations; Partial differential equations; Permittivity;
Conference_Titel :
Decision and Control, 1995., Proceedings of the 34th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-2685-7
DOI :
10.1109/CDC.1995.479173
