Comparison of post-detection correction of shortand long-exposure images formed by commonly used and multi-aperture observation systems in a turbulent atmosphere
V.V. Dudorov, A.S. Nasonova
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: многоапертурные системы, турбулентная атмосфера, некогерентное изображение, multiaperture system, turbulent atmosphere, incoherent image
Abstract
The retrieval efficiency is analyzed for atmospheric turbulence distorted images formed by single- and multi-aperture systems. Based on numerical simulation it is shown that the use of multi-aperture observation systems for computer correction of atmospheric distortions under anisoplanatism can significantly reduce the exposure time. In this case, the main distortions are well corrected when imaging for a short exposure time, which corresponds to the case of a “frozen” turbulent medium. Correction of residual small-scale distortions requires an-order-of-magnitude shorter time than in the case of long-exposure imaging with the use of common single-aperture observation systems.
|
