Atmospheric turbulence with a Shack-Hartmann wavefront sensor

Details Atmospheric turbulence with a Shack-Hartmann wavefront sensor Atmospheric turbulence with a Shack-Hartmann wavefront sensor

Sep 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3353.1092s&link_type=abstract

Proc. SPIE Vol. 3353, p. 1092-1099, Adaptive Optical System Technologies, Domenico Bonaccini; Robert K. Tyson; Eds.

Physics

Optics

3

Scientific paper

We show how to resolve the autocorrelation of wavefront- sensor measurements as they are commonly taken by adaptive- optics systems into terms due to individual atmospheric layers. We exploit this factorization to measure the strength and wind speed of each turbulent layer.We show that the Kolmogorov theory provides a good description of the data and find values of Fried's parameter, r(subscript 0), that are in good agreement with other measurements. Finally, a quantitative estimate of the validity of Taylor's frozen flow hypothesis is obtained.

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