METHOD FOR COMPENSATION OF ATMOSPHERIC DISTORTIONS INTRODUCED BY A TURBULENT ATMOSPHERE INTO AN OPTICAL SIGNAL OBTAINED FROM AN OBSERVED COSMIC BODY Russian patent published in 2020 - IPC G02B26/00 

FIELD: optics.

SUBSTANCE: invention relates to the field of adaptive optics and can be used for location from the ground of moving space objects. In the method of compensation for atmospheric distortions introduced by the turbulent atmosphere into the optical signal obtained from the observed astronomical body (AB), visualization and autofollow of AB, an artificial reference source - a sodium optical star (SS) is formed by a laser at a given anticipation in the field of view of the visualization system, registered optical signal is transmitted from AB and SS to adaptive optical system (AOS), and SS signal is transmitted to selector via selective optical element. Signal transmission occurs in two stages, at the first signal passes AOS without additional distortions, and at the second stage with the help of AOS corrections are made to the wave front of the detected signal, closed loop of AOS operation is provided by feedback with the help of SS signal on recorder, then compensation is judged upon achievement of flat wave front. Also at the second stage, distortion compensation is performed by SS aperture sounding using AOS, operating by algorithm of maximum of target function, to which corresponds number of registered photons transmitted through diaphragm of diffraction size, at which feedback is carried out by a recorder in form of a photon counter, and the working signal is the number of photons, wherein the achievement of the flat wave front is judged by the maximum of the target function.

EFFECT: technical result consists in simplification of compensation process.

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