Experimental verification of theoretical model for speckle intensity excursion areas

Terri L. Alexander; James E. Harvey; David Hefele

doi:10.1117/12.178017

29 June 1994 Experimental verification of theoretical model for speckle intensity excursion areas

Terri L. Alexander, James E. Harvey, David Hefele

Proceedings Volume 2222, Atmospheric Propagation and Remote Sensing III; (1994) https://doi.org/10.1117/12.178017
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

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.

Citation Download Citation

Terri L. Alexander, James E. Harvey, and David Hefele "Experimental verification of theoretical model for speckle intensity excursion areas", Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); https://doi.org/10.1117/12.178017

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