WANG ZHong-sheng, ZHANG Xue-jun. Symmetry of pupil in spatial synthetic aperture imaging optical system[J]. Editorial Office of Optics and Precision Engineering, 2011,19(9): 1999-2005
WANG ZHong-sheng, ZHANG Xue-jun. Symmetry of pupil in spatial synthetic aperture imaging optical system[J]. Editorial Office of Optics and Precision Engineering, 2011,19(9): 1999-2005 DOI: 10.3788/OPE.20111909.1999.
Symmetry of pupil in spatial synthetic aperture imaging optical system
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 symmetric 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.
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