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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 15, Iss. 7 — Jul. 1, 1998
  • pp: 1909–1917

Information content of Born scattered fields: results in the circular cylindrical case

Adriana Brancaccio, Giovanni Leone, and Rocco Pierri  »View Author Affiliations


JOSA A, Vol. 15, Issue 7, pp. 1909-1917 (1998)
http://dx.doi.org/10.1364/JOSAA.15.001909


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Abstract

In this analysis some limitations of the linear Born approximation in the diffraction tomography problem from far-zone data are pointed out. The analysis is performed by means of singular-value decomposition of the scattering operator in the scalar two-dimensional case of a circular dielectric cylinder illuminated by a TM-polarized plane wave. It is shown that the validity of the Born approximation entails the important condition that the scattering object not present too-fast spatial variations of the permittivity profile. For the rotationally symmetric cylinder, evidence is presented that the imaginary part of the normalized scattered far field has no information content for real permittivity objects. Moreover, for angularly varying cylinders the information content of the scattered far field for a single view is approximately the same as in the multiview case. Examples of singular-value and singular-function behavior and of profile reconstruction are depicted for the considered geometries.

© 1998 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(100.3190) Image processing : Inverse problems
(290.3200) Scattering : Inverse scattering

History
Original Manuscript: December 4, 1997
Revised Manuscript: March 2, 1998
Manuscript Accepted: March 4, 1998
Published: July 1, 1998

Citation
Adriana Brancaccio, Giovanni Leone, and Rocco Pierri, "Information content of Born scattered fields: results in the circular cylindrical case," J. Opt. Soc. Am. A 15, 1909-1917 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-7-1909


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