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Proceedings Paper

The Influence Of Line-Of-Sight Vibrations On The Performance Of E-0 Imaging Systems
Author(s): E. Halevi; B. F. Andresen; Y. Liran
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Paper Abstract

The models currently used for line-of-sight (LOS) MTFs associated with FLIR platform instabilities do not account well for the frequency content of the vibrations, the ability of the brain to "track" certain motions, or for the frame-to-frame integration. This paper presents some first results from LOS MTF measurements carried out with fast-scanning FLIRs subjected to sinusoidal and random vibrations. Only the direction of continuous scan has been considered at this stage. Our results show that the current models predict LOS MTFs which are too pessimistic. This is particularly apparent in the case of an observer-operated FLIR for the important range-determining middle spatial frequencies. The standard theory has been extended to account for frame-to-frame integration in systems which do not include an observer. This theory is used as a basis for discussion of all measured results, including those involving a human observer.

Paper Details

Date Published: 10 November 1987
PDF: 9 pages
Proc. SPIE 0819, Infrared Technology XIII, (10 November 1987); doi: 10.1117/12.941805
Show Author Affiliations
E. Halevi, EL-OP, Electrooptics Industries Ltd. (Israel)
B. F. Andresen, EL-OP, Electrooptics Industries Ltd. (Israel)
Y. Liran, EL-OP, Electrooptics Industries Ltd. (Israel)

Published in SPIE Proceedings Vol. 0819:
Infrared Technology XIII
Irving J. Spiro, Editor(s)

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