Computer Science
Scientific paper
May 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983svjqe..10..995l&link_type=abstract
(Kvantovaia Elektronika /Moscow/, vol. 10, May 1983, p.995-1001) Soviet Journal of Quantum Electronics (ISSN 0049-1748), vol. 13
Computer Science
1
Atmospheric Effects, Image Processing, Light Beams, Light Transmission, Optical Correction Procedure, Stellar Radiation, Adaptive Control, Algorithms, Atmospheric Turbulence, Phase Conjugation, Telescopes
Scientific paper
The field characteristics in cases of correction of the first two modes and of quasi-mode correction based on an analysis of the moments of the intensity distribution in the image plane are compared. It is found that by selecting the size of the tracking aperture, the same level of residual distortions as for mode correction can be attained with quasi-mode correction. It is assumed that a light wave having a distorted front is incident on the aperture of a telescope that is a circle of given radius. It is also assumed that the telescope contains a device that measures the instantaneous phase distribution of this wave within the aperture. If the phase distribution of the wave is known, it is possible to ensure that the telescope possesses diffraction-limited characteristics by adding a measured phase front to the plane front by suitable means.
Lukin V. L.
Pokasov V. V.
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