Multigrid preconditioned conjugate-gradient method for large-scale wave-front reconstruction

被引：79

作者：

Gilles, L ^{[1
]}

Vogel, CR

Ellerbroek, BL

机构：

[1] Montana State Univ, Dept Math Sci, Bozeman, MT 59717 USA

[2] Gemini Observ, Hilo, HI 96720 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2002年 / 19卷 / 09期

关键词：

D O I：

10.1364/JOSAA.19.001817

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We introduce a multigrid preconditioned conjugate-gradient (MGCG) iterative scheme for computing open-loop wave-front reconstructors for extreme adaptive optics systems. We present numerical simulations for a 17-m class telescope with n = 48756 sensor measurement grid points within the aperture, which indicate that our MGCG method has a rapid convergence rate for a wide range of subaperture average slope measurement signal-to-noise ratios. The total computational cost is of order n log n. Hence our scheme provides for fast wave-front simulation and control in large-scale adaptive optics systems. (C) 2002 Optical Society of America.

引用

页码：1817 / 1822

页数：6

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