Properties of light source image

摘要

The random focusing in the turbulent atmosphere and its influence on forming and characteristics of short exposure image of extended incoherent light source is considered. The structure of image single realizations on the base of geometrical optics is described. The problem of statistic description of non-Gaussian fields, connected with strong random focusing is considered. The connection between form of bright regions in image plane and multipoint intensity moments is investigated. The regimes of best source observation are discussed.