Title :
Image reconstruction from TE scattering data using strong permittivity fluctuation theory
Author :
Ma, J.L. ; Chew, W.C. ; Lu, C.C. ; Song, J.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
Compared to the TM case, the inverse scattering problem for the TE incident field is more complicated, due to its stronger nonlinearity. This work provides an effective method for the reconstruction of 2D inhomogeneous dielectric objects from TE scattering data. The algorithm is the combination of the distorted Born iterative method and strong permittivity fluctuation theory. Numerical simulations are performed and the results show that the distorted Born iterative method for strong permittivity fluctuation (SPF-DBIM) converges faster and can obtain better reconstructions for objects with larger dimensions and higher contrast in comparison with the ordinary distorted Born iterative method (DBIM). A frequency hopping technique is also applied to further increase the contrast.
Keywords :
electromagnetic wave scattering; image reconstruction; inverse problems; iterative methods; microwave imaging; permittivity; 2D inhomogeneous dielectric objects; TE incident field; TE scattering data; algorithm; contrast; distorted Born iterative method; frequency hopping technique; image reconstruction; inverse scattering problem; microwave imaging; nonlinearity; numerical simulations; strong permittivity fluctuation theory; Dielectrics; Fluctuations; Image reconstruction; Inverse problems; Iterative algorithms; Iterative methods; Numerical simulation; Permittivity; Scattering; Tellurium;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1998. IEEE
Conference_Location :
Atlanta, GA, USA
Print_ISBN :
0-7803-4478-2
DOI :
10.1109/APS.1998.702034
