Aperture averaging of optical scintillations in the atmosphere: experimental results

Linda M. Wasiczko; Christopher C. Davis

doi:10.1117/12.606020

25 May 2005 Aperture averaging of optical scintillations in the atmosphere: experimental results

Proceedings Volume 5793, Atmospheric Propagation II; (2005) https://doi.org/10.1117/12.606020
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

The aperture averaging factor is a measurement of the ratio of the atmospheric turbulence-induced irradiance scintillations incident on a receiver with diameter D to those incident on a point receiver. Characterizing the amount of aperture averaging in an optical receiver system will allow for tradeoffs to be made between the error performance of an optical receiver and the size and weight of the receiver. Aperture averaging theory has been extensively developed for optical wave propagation in weak turbulence conditions. A lack of experimental aperture averaging data over a variety of turbulence strengths, test range characteristics, and aperture diameters restricts progress in the development of useable propagation models. Experimental measurements of the aperture averaging factor collected over a test range at the University of Maryland are presented here. The impact of this data on the design of free space optical communication receivers will be discussed.

Citation Download Citation

Linda M. Wasiczko and Christopher C. Davis "Aperture averaging of optical scintillations in the atmosphere: experimental results", Proc. SPIE 5793, Atmospheric Propagation II, (25 May 2005); https://doi.org/10.1117/12.606020

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