Title :
Diffraction tomography of inhomogeneous media with higher resolvability: The case of strong phase variations
Author :
Kravtsov, Yurii A. ; Tinin, Mikhail V. ; Knizhin, Sergei I.
Author_Institution :
Space Res. Inst., Russian Acad. of Sci., Moscow, Russia
Abstract :
Diffraction tomography of the inhomogeneous media is studied on the basis of the method of double weighted Fourier transform (DWFT). In a given paper we study a case, when plasma inhomogeneities are placed within a thin layer and play a role of the phase screen. Numerical simulation of the inversed DWFT procedure is performed for a model of the thin phase screen in conditions of strong phase variations. Additionally discrete version of the tomography processing is considered which describes the transmitting and receiving systems with discrete elements. Suggested method provides super Fresnel resolution.
Keywords :
Fourier transforms; Fresnel diffraction; geometrical optics; inhomogeneous media; optical resolving power; optical tomography; plasma electromagnetic wave propagation; Fresnel resolution; diffraction tomography; double weighted Fourier transform; higher resolvability; inhomogeneous media; inversed DWFT procedure; numerical simulation; phase screen; phase variations; plasma inhomogeneity; receiving system; thin layer; thin phase screen; tomography processing; transmitting system; Approximation methods; Diffraction; Fourier transforms; Nonhomogeneous media; Physics; Plasmas; Tomography;
Conference_Titel :
Electromagnetic Theory (EMTS), 2010 URSI International Symposium on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-5155-5
Electronic_ISBN :
978-1-4244-5154-8
DOI :
10.1109/URSI-EMTS.2010.5637148
