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Proceedings Paper

Experimental verification of theoretical model for speckle intensity excursion areas
Author(s): Terri L. Alexander; James E. Harvey; David Hefele
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Paper Abstract

Speckle is inherently an interference phenomenon produced when a rough object or turbulent medium introduces some degree of randomness to a reflected or transmitted electromagnetic field. Speckle characteristics are therefore a major concern in many laser imaging or wave propagation applications. For many applications, a detailed description of speckle size as a function of intensity threshold level is desirable. Extensive experimental measurements of average speckle size as a function of intensity threshold level were therefore made for several different targets and illumination conditions. We then compare these measurements with a theoretical model for excursion areas of speckle intensity. Excellent agreement is obtained for intensity threshold levels greater than approximately twice the mean intensity level.

Paper Details

Date Published: 29 June 1994
PDF: 14 pages
Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); doi: 10.1117/12.178017
Show Author Affiliations
Terri L. Alexander, CREOL/Univ. of Central Florida (United States)
James E. Harvey, CREOL/Univ. of Central Florida (United States)
David Hefele, CREOL/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 2222:
Atmospheric Propagation and Remote Sensing III
Walter A. Flood; Walter B. Miller, Editor(s)

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