Title :
Image reconstruction based on FD-MEI, CGM, VMM
Author :
Qian, ZuPing ; Hong, Wei
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
fDate :
6/21/1905 12:00:00 AM
Abstract :
In this paper, the reconstruction of cylinders with complex media is investigated. The forward scattering problem is first analyzed by using the FD-MEI (finite difference-measured equation of invariance) method, then the objective function is constructed in terms of the difference between the computed scattering fields and the measured fields, and finally the objective function is minimized through the conjugate gradient method (CGM) and variable metric method (VMM). The effectiveness of the method is demonstrated by reconstruction examples of a conducting cylinder and a dielectric cylinder, where the reconstruction of a conducting cylinder is based on the real Ipswich data.
Keywords :
conducting bodies; conjugate gradient methods; dielectric bodies; electromagnetic wave scattering; finite difference methods; image reconstruction; complex media; conducting cylinder; conjugate gradient method; cylinders; dielectric cylinder; finite difference-measured equation of invariance method; forward scattering problem; image reconstruction; objective function; variable metric method; Dielectric measurements; Difference equations; Differential equations; Engine cylinders; Finite difference methods; Image reconstruction; Iterative methods; Permittivity; Scattering; User-generated content;
Conference_Titel :
Computational Electromagnetics and Its Applications, 1999. Proceedings. (ICCEA '99) 1999 International Conference on
Print_ISBN :
0-7803-5802-3
DOI :
10.1109/ICCEA.1999.825176
