Aero-optic performance of supersonic mixing layers

Shelah M. Lawson; Rodney L. Clark; Randy F. Crouse

doi:10.1117/12.22499

1 October 1990 Aero-optic performance of supersonic mixing layers

Shelah M. Lawson, Rodney L. Clark, Randy F. Crouse

Proceedings Volume 1326, Window and Dome Technologies and Materials II; (1990) https://doi.org/10.1117/12.22499
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

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.

Citation Download Citation

Shelah M. Lawson, Rodney L. Clark, and Randy F. Crouse "Aero-optic performance of supersonic mixing layers", Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); https://doi.org/10.1117/12.22499

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