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Proceedings Paper

Atmospheric Turbulence Effects On Optical Spatial Coding
Author(s): K. Wilner; M. Wetzler; N. Ben-Yosef
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Paper Abstract

A common use of optical spatial coding is the application for guidance and tracking concept. The spatial coding is usually implemented by a rotating reticle. The spatial coding is performed on an image, like in the case of anti-aircraft missiles, or on a laser beam projector, such as in the beam rider concept. Experience indicates that the lateral position measurement by optical spatial coding is strongly affected by the Modulated Transfer Function (MTF) of the optical channel. In our example, this channel consists of a laser beam generator, the atmosphere, an optical receiver and threshold logic. The analysis will demonstrate the influence of the turbulence affected edge response, scintillation effects and threshold dependent error on the line of sight (LOS) measurments. As a result, the feasibility of an adaptive threshold logic demonstrates improved accuracy of the location error.

Paper Details

Date Published: 5 July 1989
PDF: 11 pages
Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); doi: 10.1117/12.951085
Show Author Affiliations
K. Wilner, Israel Military Industries (Israel)
M. Wetzler, Israel Military Industries (Israel)
N. Ben-Yosef, The Hebrew University of Jerusalem (Israel)

Published in SPIE Proceedings Vol. 1038:
6th Mtg in Israel on Optical Engineering
Rami Finkler; Joseph Shamir, Editor(s)

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