自适应光学波前控制算法的脉动阵列结构  

Implementation of Wavefront Control Calculation Used for Adaptive Optics System on Systolic Array

作　　者：郑文佳[1,2] 王春鸿[1] 姜文汉[1] 李梅[1] 唐端午[1,2] 

机构地区：[1]中国科学院光电技术研究所,成都610209 [2]中国科学院研究生院,北京100039

出　　处：《数据采集与处理》2008年第4期444-448,共5页Journal of Data Acquisition and Processing

基　　金：国家高技术研究发展(八六三)计划(2006AA802206)资助项目

摘　　要：提出了一种用于自适应光学波前控制算法的脉动阵列结构。该结构将波前控制算法分为递归运算和卷积运算两部分后,采用规范映射方法将其分别映射到脉动阵列,再将两个阵列链接以实现单路的波前控制运算。同时将处理单元共享引入阵列,并设计了以队列方式进行数据传递的脉动通信模式,将n路控制电压以分时复用的方式在一个阵列中串行计算以提高处理单元的利用率,减少硬件资源占用。实验表明,该结构具有控制流、数据流简单,硬件资源少等优点,且实时性强、模块化程度高。A new structure of systolic array for adaptive optical wavefront reconstruction is proposed. This structure divides wavefront control calculation into recursive algorithm and convolution algorithm, and maps them to respectively systolic array by using canonical mapping method. Then the two arrays are chained together to calculate signal way wavefront control voltage. To increase processor utilization efficiency and reduce hardware resources, the PEsharing and queue-based systolic communication are brought into the array. As a result, nways of control voltage can be serially calculated in one systolic array with time-sharing. Experimental results indicate that the structure has the following advantages： simple data flow and control flow, economical hardware resources, real-time calculation, and highly modularized structure.

关 键 词：自适应光学 脉动阵列 波前控制算法 规范映射 脉动通信模式 

分 类 号：O439[机械工程—光学工程]