Title :
Microwave imaging of radially inhomogeneous cylindrical bodies
Author :
Akhtar, M.J. ; Omar, A.S.
Author_Institution :
Magdeburg Univ., Germany
Abstract :
An improved and efficient method for predicting radially dependent permittivity profiles in cylindrical objects illuminated by higher order TE- or TM-radial modes is presented. It is based on a Hankel transform of the measured scattering data and a previously proposed renormalization technique. The later isolates the nonlinearity of the problem in form of a nonlinear algebraic transformation rendering a linear differential equation describing an auxiliary reflection coefficient and hence a unique solution can be easily obtained. Comparison between the reconstructed and the original profiles has shown good agreement for a number of cases.
Keywords :
Hankel transforms; conducting bodies; differential equations; electromagnetic wave reflection; electromagnetic wave scattering; image reconstruction; inhomogeneous media; microwave imaging; nonlinear equations; permittivity; Hankel transform; auxiliary reflection coefficient; cylindrical objects; efficient method; higher order TE-radial modes; higher order TM-radial modes; linear differential equation; measured scattering data; microwave imaging; nonlinear algebraic transformation; original profiles; problem nonlinearity; radially dependent permittivity profiles; radially inhomogeneous cylindrical bodies; reconstructed profiles; renormalization technique; unique solution; Image reconstruction; Inverse problems; Lighting; Microwave imaging; Permittivity; Propagation constant; Reflection; Transforms; Ultrasonic imaging; X-ray scattering;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2000. IEEE
Conference_Location :
Salt Lake City, UT, USA
Print_ISBN :
0-7803-6369-8
DOI :
10.1109/APS.2000.873822
