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Proceedings Paper

Procedure for calculating the resolution of electro-optical systems
Author(s): Theodore J. Schulze
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Paper Abstract

The measurement or estimation of the resolution (usually tribar) of an Electro-Optical (E-O) system is complicated primarily by two effects: 1) The phase of the periodic detector array relative to the periodic target bar spacing produces a moire effect in which the target can appear stronger and weaker. 2) The electronic signal is enhanced in some manner thereby precluding contrast as a limiter of resolution. The algorithm described in this paper avoids the phase problem by using only the continuous part of the generated noise, and avoids the contrast problem by using the signal-to-noise ratio as the resolution determining criterium. The acceptance spectrum of the human eye is used to define both signal and noise. A typical system with variable parameters is analyzed; the results indicate there are practical limits to the quality required of system elements.

Paper Details

Date Published: 1 November 1990
PDF: 11 pages
Proc. SPIE 1342, Airborne Reconnaissance XIV, (1 November 1990); doi: 10.1117/12.23130
Show Author Affiliations
Theodore J. Schulze, Recon/Optical, Inc. (United States)

Published in SPIE Proceedings Vol. 1342:
Airborne Reconnaissance XIV
Paul A. Henkel; Francis R. LaGesse; Wayne W. Schurter, Editor(s)

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