光学精密工程2011，Vol.19Issue(9)：1999-2005,7.DOI:10.3788/OPE.20111909.1999
空间合成孔径成像光学系统的光瞳对称性
Symmetry of pupil in spatial synthetic aperture imaging optical system
摘要
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 distribution of MTF. Obtained results indicate that JWST and GMT synthetic aperture systems developed recently show 30 and 9 MTF symmetric axes ,respectively, which is obvious higher than 3 MTF sym-metric axis of a common Golay3 construction. Moreover, their MTF distribution is more reasonable. These results demonstrate that the good symmetry of pupil distribution has a better imaging for the incoherent imaging optical system with a complex pupil.关键词
合成孔径/光学成像系统/非相干成像/复杂光瞳/对称性Key words
synthetic aperture/optical imaging system/ incoherent imaging/complex pupil/ symmetry分类
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王忠生,张学军..空间合成孔径成像光学系统的光瞳对称性[J].光学精密工程,2011,19(9):1999-2005,7.基金项目
国家自然科学基金重点资助项目(No.61036015) （No.61036015）
