The Effect of Turbulent Outer Scale on Atmospheric Transverse Coherence Length and Isoplanatic Angles

Details The Effect of Turbulent Outer Scale on Atmospheric Transverse Coherence Length and Isoplanatic Angles The Effect of Turbulent Outer Scale on Atmospheric Transverse Coherence Length and Isoplanatic Angles

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995stin...9632533s&link_type=abstract

Technical Report, Air Force Inst. of Tech. Wright-Patterson AFB, OH United States National Air Intelligence Center Transl. into

Physics

Atmospheric Turbulence, Wave Propagation, Wave Functions, Vertical Distribution, Coherent Light, Optical Properties, Apertures, Telescopes

Scientific paper

Based on the measured altitude distributional data of the turbulence structure constant (Cetasquared), this article analyzes the effects of turbulent outer scale LO on atmospheric transverse coherence length rO and isoplanatic angle ThetaO0 under the two conditions of large apertures and small apertures. Calculation results clearly show that, under conditions where L(sub O is a limited value, rO and ThetaO clearly increase. With regard to large aperture telescopes, in infrared wave bands - for example, wave lengths of 2.2 microns - r sub(O) and ThetaO are even larger. ThetaO can even reach 0.5 mrad.

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