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Proceedings Paper

Simulating video through turbulence
Author(s): Kevin McBryde; Kris Gibson
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Paper Abstract

Atmospheric turbulence can cause significant degradation to video over long horizontal paths. The refractive index fluctuations along the path from scene to camera lead to blur, varying across the frame and from frame to frame. Computationally inexpensive methods model this effect with an MTF blur function; however this technique neglects anisoplanatic effects. Wave optics techniques have been developed taking into account anisoplanatism, but ignoring scintillation, and spatial and temporal effects. Since long horizontal paths over varied surfaces (e.g. water to land or vice versa) will encounter varying turbulence strength along the path, the turbulence strength should be defined independently at each phase screen. Also important, turbulence strength can vary over short time scales (<1s), so a physically accurate simulation must allow time-dependent phase screens. We will present results of a wave optics simulation technique that includes these spatial and temporal variations.

The results will provide validation for turbulence removal algorithms.

Paper Details

Date Published: 25 September 2013
PDF: 7 pages
Proc. SPIE 8874, Laser Communication and Propagation through the Atmosphere and Oceans II, 88740P (25 September 2013); doi: 10.1117/12.2026850
Show Author Affiliations
Kevin McBryde, Space and Naval Warfare Systems Command (United States)
Kris Gibson, Space and Naval Warfare Systems Command (United States)

Published in SPIE Proceedings Vol. 8874:
Laser Communication and Propagation through the Atmosphere and Oceans II
Alexander M. J. van Eijk; Christopher C. Davis; Stephen M. Hammel, Editor(s)

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