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Diffraction Tomographic Imaging with a Circular Array

Naidu, Prabhakar S and Vasuki, A and Satyamurthy, P and Anand, L (1995) Diffraction Tomographic Imaging with a Circular Array. In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 42 (4). pp. 787-789.

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Abstract

A new approach of imaging an object profile from the scat-tered wavefield, which is measured using a large (far field approximation) circular array of sensors surrounding the object, is described. It is shown that the measured field is itself proportional to the Fourier transform of the object. Consequently, as compared to the existing methods, such as back propagation method for a linear array, our method overcomes the well known effects of the finite window in numerical evaluation of the Fourier transform of the measured scattered field. This results into improved reconstruction.

Item Type: Journal Article
Additional Information: Copyright 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 25 Aug 2008
Last Modified: 19 Sep 2010 04:29
URI: http://eprints.iisc.ernet.in/id/eprint/7627

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