title: Multiscale stochastic approach for phase screens synthesis.
abstract: Simulating the turbulence effect on ground telescope observations is of fundamental importance for the design and test of suitable control algorithms for adaptive optics systems. In this paper we propose a multiscale approach for efficiently synthesizing turbulent phases at very high resolution. First, the turbulence is simulated at low resolution, taking advantage of a previously developed method for generating phase screens [J. Opt. Soc. Am. A 25, 515 (2008)]. Then, high-resolution phase screens are obtained as the output of a multiscale linear stochastic system. The multiscale approach significantly improves the computational efficiency of turbulence simulation with respect to recently developed methods [Opt. Express 14, 988 (2006)] [J. Opt. Soc. Am. A 25, 515 (2008)] [J. Opt. Soc. Am. A 25, 463 (2008)]. Furthermore, the proposed procedure ensures good accuracy in reproducing the statistical characteristics of the turbulent phase.
authors.affiliation: Dipartimento di Ingegneria dell’Informazione, Università di Padova via Gradenigo 6/B, 35131 Padova, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Beghi
authors.forename: Angelo
authors.initials: A
authors.lastname: Cenedese
authors.forename: Andrea
authors.initials: A
authors.lastname: Masiero