Physics – Optics
Scientific paper
Jun 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2222..800f&link_type=abstract
Proc. SPIE Vol. 2222, p. 800-810, Atmospheric Propagation and Remote Sensing III, Walter A. Flood; Walter B. Miller; Eds.
Physics
Optics
Scientific paper
Our numerical simulations use relatively complex models of the atmosphere to investigate both Kolmogorov and non-Kolmogorov models. We find that the measurements of Bester et al. for light passing through the upper atmosphere are within the limits of behavior for Kolmogorov models, but often only if the outer scale of turbulent fluctuations is between 15 to 100 m. The possibility that the measured behavior might be non-Kolmogorov is not excluded. We also examine measurements made along short paths in the surface boundary layer, where some measurements of Bester el al. showed variations in the atmospheric fluctuations with seeing conditions which appeared to be non-Kolmogorov. These variations can perhaps be explained by standard models, but require that seeing improve with increasing wind speed in the surface layer. We discuss some other measurements which lend some support to that idea. However, we cannot exclude non-Kolmogorov behavior. We find that meteorological data is needed concurrent with astronomical observations, to help constrain the models. The size of the outer scale, the wind velocity profile and the turbulence spectrum are important to the ultimate capabilities of interferometers and other systems with adaptive optics.
Bradford Lawrence William
Flatte Stanley M.
Max Claire Ellen
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