The problem of the short-exposure image restoration for post detection turbulence compensation in minimum-redundancy linear optical arrays is considered for general a priori limitation. A decision procedure for solving the problems of this class is proposed that consists in formalizid registering the a priori information, finding a stable (regularized) solution and devising a numerical restoration algorithm, which based on the global optimization methods. It is shown that this optimization procedure can be used for image restoration in arbitrary optical aperture synthesis systems. An example of the undistorted test restoration is given.

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The length of a floating segment along which a discharge can be maintained is mainly determined by the ratio of electron temperature to electric field. Metal segments several metres long appear possible for favourable values of this ratio. The effect of an axial magnetic field is to reduce the length of floating segment possible. The effects of biasing the segments positively or negatively is discussed. Some problems of discharge initiation are examined.

Аннотация. Рассматриваются особенности формирования средних длинно-экспозиционных и средних коротко-экспозиционных изображений ДЗЗ, искаженных турбулентной атмосферой. Представлены аналитические выра-жения для средней длинно-экспозиционной и средней коротко-экспозиционной оптических передаточных функ-ций (ОПФ) системы атмосфера-телескоп. Рассмотрены алгоритмы априорной пространственной фильтрации. Предложен и исследован адаптивный алгоритм последетекторной фильтрации средних изображений с форми-рованием и максимизацией функций резкости изображения. Abstract. Peculiarities of formation average long-exposures and average short-exposures images, distorted by turbulent atmosphere, areconsidered.Analitic expressions for average long-exposure and average short-exposure optical transfer functions (OTF) of system atmosphere-telescope are presented.Algorithms of apriori spatial filtration are considered. Adaptive algorithm of postdetection filtration of average images by formation and maximized function of sharpening images is proposed and investigated.