Efficiencies of different schemes for the formation of laser guide stars

Details Efficiencies of different schemes for the formation of laser guide stars Efficiencies of different schemes for the formation of laser guide stars

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3353.1109l&link_type=abstract

Proc. SPIE Vol. 3353, p. 1109-1120, Adaptive Optical System Technologies, Domenico Bonaccini; Robert K. Tyson; Eds.

Computer Science

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Scientific paper

We have pointed out that such two terms as 'an effective scattering volume' and 'a laser guide star' (LGS) are scientific synonyms. The first term had been introduced earlier by specialists in atmospheric optics and laser sounding. In the report we have also represented information concerning fluctuations of waves reflected from an object and waves passed twice atmospheric inhomogeneities. Corresponding mathematical apparatus allows one to estimate correlation characteristics of a LGS. We have considered the mutual correlation function of random angular displacements of a plane wave image and the centroid displacements of a focused Gaussian laser beam. The algorithm of 'optimal' correction was introduced in which a priory information is employed. Basing on this algorithm the variance was evaluated of residual jitters of a star image obtained with the use of LGS.

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