Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern
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Jun 17, 2014
About this article
Published Online: Jun 17, 2014
Page range: 177 - 182
Received: Aug 09, 2013
Accepted: Jun 10, 2014
DOI: https://doi.org/10.2478/msr-2014-0024
Keywords
© by I. Hamarová
This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained by means of change in a parameter of the Gaussian beam. The mean speckle size is computed through two approaches using both the two-dimensional and the one-dimensional normalized autocorrelation function in intensity. Additionally, we propose a distinct optimization of the determination of the mean speckle size by reduction of intensity values representing detected speckle patterns. Results of the determination of the mean speckle size are compared with theoretical predictions