Stochastic optimization for a tip-tilt adaptive correcting system

作     者：Zakynthinaki, MS Saridakis, Y 

作者机构：Univ Politecn Cataluna Dept Matemat Aplicada 1 E-08028 Barcelona Spain Tech Univ Crete Dept Sci Appl Math & Comp Lab Khania 73100 Greece 

出 版 物：《COMPUTER PHYSICS COMMUNICATIONS》 (计算机物理学通讯)

年 卷 期：2003年第150卷第3期

页      面：274-292页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Secretaría de Educación y Universidades General Secretariat for Research and Technology, GSRT, (PENED-107.527, SB 2000-0396) European Social Fund, ESF 

主　　题：stochastic optimization ALOPEX algorithm adaptive wavefront correction tip-tilt mirror masking 

摘      要：We present computer simulations of a tip-tilt adaptive optics system, where stochastic optimization is applied to the problem of dynamic compensation of atmospheric turbulence. The system uses a simple measure of the light intensity that passes through a mask and is recorded on the image plane, to generate signals for the tip-tilt mirror. A feedback system rotates the mirror adaptively and in phase with the rapidly changing atmospheric conditions. Computer simulations and a series of numerical experiments investigate the implementation of the method in the presence of drifting atmosphere. In particular, the study examines the system s sensitivity to the rate of change of the atmospheric conditions and investigates the optimal size of the mirror s masking area and the algorithm s optimal degree of stochasticity. (C) 2002 Elsevier Science B.V. All rights reserved.