Chinese Optics Letters, 2012, 10 (s1): S10102, Published Online: May. 18, 2012
Numerical simulation and analysis of dynamic compensation for atmosphere turbulence based on stochastic parallel gradient descent optimization Download: 663次
010.0010 Atmospheric and oceanic optics 010.1080 Active or adoptive optics 010.1330 Atmospheric turbulence
Abstract
We present the numerical simulation and analysis of the bandwidth estimation for adaptive optics (AO) systems based on stochastic parallel gradient descent (SPGD) optimization. Time-varying atmosphere turbulence due to wind velocity and turbulence structure constant is considered in the dynamic simulation. The performance of SPGD system with different iteration frequencies is studied in detail. A formula given that estimates the Strehl ratio degradation after SPGD adaptive control due to the increasing proportion of the number of deformable mirror actuator times Greenwood frequency to iteration frequency based on numerical analyses, can be used to roughly predict the required iteration frequency under the condition of various Greenwood frequencies.
Huimin Ma, Pengfei Zhang, Jinghui Zhang, Chunhong Qiao, Chengyu Fan. Numerical simulation and analysis of dynamic compensation for atmosphere turbulence based on stochastic parallel gradient descent optimization[J]. Chinese Optics Letters, 2012, 10(s1): S10102.