Retrieval of crosswind velocity based on the analysis of remote object images. Part 1. Drift of a thin layer of turbulent inhomogeneities
V.V. Dudorov, A.S. Eremina
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: скорость ветра, турбулентная атмосфера, некогерентное изображение, wind, turbulent atmosphere, incoherent image
Abstract
Numerical simulation is carried out in order to evaluate possibilities of crosswind velocity determination along an observation path between distant object and observer. The proposed simulation method is based on the analysis of atmospheric distortions in the object images. The influence of limited atmospheric areas on the object image distortion and possibilities of the drift velocity retrieval in these areas are investigated. A new method for filtration of turbulent distortions by their characteristic sizes is suggested with the aim to determine the wind velocity at different segments of the observation path. It is demonstrated that the evaluation method allows one to determine crosswind velocity with high accuracy when it is applied to a thin layer of atmospheric inhomogeneities.
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