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.
© 2011 Optical Society of America
Atmospheric and Oceanic Optics: Wave-front Sensing
Original Manuscript: February 1, 2011
Revised Manuscript: June 5, 2011
Manuscript Accepted: June 6, 2011
Published: July 19, 2011
Alessandro Beghi, Angelo Cenedese, and Andrea Masiero, "Multiscale stochastic approach for phase screens synthesis," Appl. Opt. 50, 4124-4133 (2011)