Diffraction tomography of inhomogeneous medium in the presence of strong phase variations

A model of diffraction tomography on the basis of the double weighted Fourier transform (DWFT) is considered. A method for processing the results of tomographic measurements based on the inverse DWFT is proposed. Such processing enables one to obtain super-Fresnel resolution, just as Born’s and Ryto...

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Bibliographic Details
Published in:Journal of communications technology & electronics Vol. 56; no. 7; pp. 831 - 837
Main Authors: Kravtsov, Yu. A., Tinin, M. V., Knizhnin, S. I.
Format: Journal Article
Language:English
Published: Dordrecht SP MAIK Nauka/Interperiodica 01-07-2011
Springer
Springer Nature B.V
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Summary:A model of diffraction tomography on the basis of the double weighted Fourier transform (DWFT) is considered. A method for processing the results of tomographic measurements based on the inverse DWFT is proposed. Such processing enables one to obtain super-Fresnel resolution, just as Born’s and Rytov’s models of diffraction tomography but in conditions allowing strong phase variations. The influence of the dimensions and discrete structure of the radiating and receiving antennas on the resolution of the diffraction tomography is studied. It is shown that, using sufficiently large antennas and a small discretization interval, one can obtain super-Fresnel resolution in the presence of phase variations that are significantly greater than those admissible for Born’s and Rytov’s algorithms.
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ISSN:1064-2269
1555-6557
DOI:10.1134/S1064226911070096