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Proceedings Paper

Aero-optic performance of supersonic mixing layers
Author(s): Shelah M. Lawson; Rodney L. Clark; Randy F. Crouse
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Paper Abstract

Advances made in the field of aero-optical system modeling are applied in the technology of super- or hypersonic vehicles carrying optical seekers. The fundamentals discussed form a basis for performance predictions of these airborne optical systems. The focus is the inherent image degradation due to aerodynamic mixing layers. This paper examines the aero-optic properties of supersonic mixing layers. Recent experimental results on the aerophysics of supersonic mixing layers is combined with statistical aero-optics theory to create empirical equations governing the image degradation resulting from light propagating through a classical mixing layer. This model results in simple expressions for blur circle size, Strehl loss, jitter and boresight error. Expressions for the turbulent Modulation Transfer Function (MTF) and the Point Spread Function (PSF), assuming a diffraction-limited optical system, can also be determined.

Paper Details

Date Published: 1 October 1990
PDF: 6 pages
Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); doi: 10.1117/12.22499
Show Author Affiliations
Shelah M. Lawson, Teledyne Brown Engineering (United States)
Rodney L. Clark, Teledyne Brown Engineering (United States)
Randy F. Crouse, Teledyne Brown Engineering (United States)

Published in SPIE Proceedings Vol. 1326:
Window and Dome Technologies and Materials II
Paul Klocek, Editor(s)

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