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Proceedings Paper

A re-analysis of short-exposure turbulent effects on passive imaging
Author(s): David H. Tofsted
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Paper Abstract

In 1966, D. L. Fried developed a theoretical framework for describing the modulation transfer function (MTF) of optical turbulence effects for short-exposure imaging, thereby extending Hufnagel and Stanley's model for longexposure imaging through turbulence. In his analysis Fried assumed the independence of phase perturbations about the mean tilt factor and this tilt factor. In this reanalysis this assumption is deleted, resulting in a new term in the derivation. This term exhibits several new features, including superresolution at high spatial frequencies under moderate turbulence levels, and turbulence strength dependent degradation of the MTF at high turbulence levels.

Paper Details

Date Published: 4 May 2010
PDF: 10 pages
Proc. SPIE 7685, Atmospheric Propagation VII, 768504 (4 May 2010); doi: 10.1117/12.850405
Show Author Affiliations
David H. Tofsted, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 7685:
Atmospheric Propagation VII
Linda M. Wasiczko Thomas; Earl J. Spillar, Editor(s)

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