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Proceedings Paper

Imaging using fourth-order correlations of coherent fields
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Paper Abstract

Correlations of coherent backscatter intensities have been used to form Fourier spectra of coherently illuminated objects. Both second and some fourth-order correlations have been studied. We add to this by describing a new method using fourth order field correlations for imaging. If one knows the actual object speckle field, or certain sheared versions of it, then it is possible through fourth-order correlations to obtain the incoherent brightness function of the object. The technique will allow simultaneous averaging-out of both field phase distortions, certain field measurement noises, and laser speckle.

Paper Details

Date Published: 9 November 1993
PDF: 7 pages
Proc. SPIE 2029, Digital Image Recovery and Synthesis II, (9 November 1993); doi: 10.1117/12.161997
Show Author Affiliations
John D. Gonglewski, Air Force Phillips Lab. (United States)
David G. Voelz, Air Force Phillips Lab. (United States)
David Charles Dayton, Applied Technology Associates, Inc. (United States)
Timothy J. Schulz, Michigan Technological Univ. (United States)


Published in SPIE Proceedings Vol. 2029:
Digital Image Recovery and Synthesis II
Paul S. Idell, Editor(s)

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