第18卷第7期 2010年7月
文章编号
1004-924X(2010)07-1453-07
光学精密工程
Optics and Precision Engineering
类Golay6稀疏孔径结构
吴泉英，钱霖2.3
Vol. 18No.7
Jul.2010
（1.苏州科技学院数理学院，江苏苏州215009;2.苏州大学物理科学与技术学院光电系，江苏苏州215006；
3.江苏省现代光学技术重点实验室，江苏苏州215006)
摘要：分析了Golay稀疏孔径结构阵列，在正三角形网格分布的基础上，找出Golay结构子孔径非允余分布的规律，提出了一种类Golay6新型稀疏孔径结构。按照一维阵列排列及其非允余分布的规律，类Golay6结构的子孔径在光瞳面上按三角形网格分布在正三角形的边长上，推导出类Golay6调制传递函数(MTF)公式，给出MTF分布，并且与Golay6结构进行了比较。结果显示，类Golay6结构的MTF分布均匀，最大截止空间频率与Golay6结构的相等，实际等效口径比
大于Golay6结构9.1%。另外，类Golay6子孔径排列比Golay6结构的简单，是一种非允余的新型稀疏孔径结构，关键调：光学望远镜；稀疏孔径；光睡结构；调制传递函数
中图分类号：TH743;TH703
文献标识码：A
doi;10.3788/OPE.20101807.1453
Pupilconfigurationofquasi-Golay6sparse-aperture
WU Quan-ying', QIAN Lin-
(1.School ofMathematics and Physics,SuzhouUniversity of
ScienceandTechnology,Suzhou215009,China;
2.School of Physics Science&Technology,Soochow University,Suzhou 215006,China; 3.Jiangsu'Key Laboratory of Modern Optical Technology,Soochow University,Suzhou 215006,China)
Abstract: The sparse aperture array of Golay is analyzed. Then, the rule of Golay nonredundant con figuration arrangement is derived based on the equilateral triangular set and a novel sparse aperture configuration named quasi-Golay6 is proposed. According to the rules of one dimensional array ar rangement and nonredundant configuration arrangement,the sub-apertures of quasi-Golay6 on the en-trance pupil are arranged on sides of an equilateral triangle. The Modulation Transfer Function(MTF) formula of quasi-Golay6 is deduced, and its distribution is also given out. The MTFs of quasi-Golay6 are compared with those of Golay 6 to investigate the characteristics of quasi-Golay6. The re-sults demonstrate that the MTF distribution of quasi-Golay6 is uniform at the spatial frequency space, its highest cutoff spatial frequency is the same as that of Golay6 with the same fill factor, and the ratio of practical effective diameters is 9. 1% larger than that of Golay6. It is concluded that the sub-aper ture arrangement of quasi-Golay6 is simpler than that of Golay6,and is a nonredundant configuration with sparse apertures.
收稿日期：2010-03-22；修订日期：2010-05-20.
基金项目：江苏省高校自然科学基金资助项目（No.07KJD140190》；江苏省自然科学基金资助项目
(No.BK2009129)；江苏政府留学奖学金和江苏省"333"人才工程资助项目