Real-time wavefront control for the PALM-3000 high order adaptive optics system
Real-time wavefront control for the PALM-3000 high order adaptive optics system
复制标题
PALM-3000 高阶自适应光学系统的实时波前控制
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
J. Roberts
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文献类型：
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作者：
T. Truong;A. Bouchez;R. Dekany;J. Shelton;M. Troy;J. Angione;R. Burruss;J. Cromer;S. Guiwits;J. Roberts
我们提出了一个具有成本效益的可扩展的实时波前控制架构的基础上，现成的图形处理单元托管在一个超低延迟，高带宽互连PC集群环境组成的模块编写的面向组件的语言nesC。我们证明了该架构能够支持PALM-3000自适应光学系统在帧速率高达2KHz且延迟低于250 s的情况下的最大计算和存储密集型波前重建方法（矢量-矩阵-乘法）&mgr;，5.1米黑尔望远镜的最新升级，包括一个64 × 64的子孔径Shack，哈特曼波前传感器和3368有源致动器高阶可变形反射镜与349致动器“低音扬声器”DM串联。该架构可以轻松扩展，以更高的速率和更低的延迟支持更大的AO系统。
We present a cost-effective scalable real-time wavefront control architecture based on off-the-shelf graphics processing units hosted in an ultra-low latency, high-bandwidth interconnect PC cluster environment composed of modules written in the component-oriented language of nesC. We demonstrate the architecture is capable of supporting the most computation and memory intensive wavefront reconstruction method (vector-matrix-multiply) at frame rates up to 2 KHz with latency under 250 &mgr;s for the PALM-3000 adaptive optics systems, a state-of-the-art upgrade on the 5.1 meter Hale Telescope that consists of a 64x64 subaperture Shack-Hartmann wavefront sensor and a 3368 active actuator high order deformable mirror in series with a 349 actuator "woofer" DM. This architecture can easily scale up to support larger AO systems at higher rates and lower latency.