Abstract
Abstact. In this paper, we discuss the methods for evaluation of the anisotropy of small-scale atmospheric irregularities using satellite stellar occultation measurements. These methods are based on coherency analysis of bi-chromatic scintillation observed in occultations of double stars and in tangential (horizontal) occultations. These methods are applied to scintillation measurements by two fast photometers of the GOMOS (Global Ozone Monitoring by Occultation of Stars) instrument on board ENVISAT. The estimates of the anisotropy of air density irregularities generated by saturated gravity waves are obtained for altitudes 30-45 km. The anisotropy coefficient varies from 50 down to 10 with decreasing vertical scales from 60 m to 10 m.
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