第19卷第9期 2011年9月
文章编号
1004-924X(2011)09-1999-07
光学精密工程
Optics and Precision Engineering
Vol. 19No.9
Sep.2011
空间合成孔径成像光学系统的光瞳对称性
王忠生1.2，张学军1
（1.中国科学院长春光学精密机械与物理研究所，吉林长春130033：2.中国科学院研究生院，北京100039）搞要：从对称性的角度分析比较了几种常见光学系统结构对非相干成像的影响。首先，采用了二维点扩散函数和二维空间调制传递函数分析评价复杂光瞻光学系统，通过理论分析得出复杂光瞳分布的对称性影响着点扩散函数和调制传递函数的对称性的结论。最后，利用二维评价手段，针对几种常见的合成孔径光学系统结构，Golay3，Golay4、JWST和Gi-antMagellanTelescope，的光睡分布，通过光学设计软件Zemax和Matlab综合给出它们实际的二维点扩散函数和二维调制传递函数，并结合MTF的空间分布特性对光障分布的对称性进行了对比。对比结果表明，近期的JWST和GMT 合成孔径光学系统分别具有30个和9个MTF对称轴，明显多于早期的Golay3系统的3个MTF对称轴，其MTF的分布也更加合理，因此，对于复杂光瞳非相干成像光学系统而盲，好的光瞳分布对称性具有更好的空间成像特性。
美
键调：合成孔径；光学成像系就；非相干成像；复杂光睡；对称性
中图分类号：TH743;P111.21
文献标识码：A
doi;10.3788/OPE,20111909.1999
Symmetry of pupil in spatial synthetic
apertureimagingopticalsystem WANG ZHong-sheng'-2· ,ZHANG Xue-jun
(l.Changchun Institute of Optics,Fine Mechanics and Physics,
ChineseAcademy of Sciences,Changchun 130033,China;
2.GraduateUniversity of Chinese Academy ofSciences,Beijing 100039,China)
*Correspondingauthor,E-mail:ciompwzs@gmai.com
Abstract: On the basis of symmetry of optical systems, the effects of several kinds of complex pupil constructions on an incoherent synthetic aperture imaging optical system were analyzed and compared. Firstly, the two-dimensional Point Spread Function(PSF) and two-dimensional Modulation Transfer Function(MTF) were used to analyze the complex pupil optical system, and it is concluded that the symmetry of complex pupil distribution has effects on the symmetries of PSF and MTF. Then, for practical pupil distribution, the two-dimensional PSFs and MTFs of the common synthetic aperture optical systems as follows, Golay3, Golay4,JWST and GMT, were given by optical design software Zemax and Matlab, and the symmetry of the systems was compared by combining the spatial distribu-tion of MTF. Obtained results indicate that JWST and GMT synthetic aperture systems developed re cently show 30 and 9 MTF symmetric axes ,respectively, which is obvious higher than 3 MTF sym
收稿日期：2010-10-27；修订日期：2011-01-29.
基金项目：国家白然科学基金重点资助项目（No.61036015）