菲索式合成孔径望远镜光学系统设计

段相永; 乔彦峰; 王永伟; 孙玉铭

doi:10.3788/CO.20120504.0380

Volume 5 Issue 4

Aug. 2012

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Chinese Optics > 2012 > 5(4): 380-387.

DUAN Xiang-yong, QIAO Yan-feng, WANG Yong-wei, SUN Yu-ming. Design of optical system for Fizeau-type synthetic aperture telescope[J]. Chinese Optics, 2012, 5(4): 380-387. doi: 10.3788/CO.20120504.0380

Citation:

DUAN Xiang-yong, QIAO Yan-feng, WANG Yong-wei, SUN Yu-ming. Design of optical system for Fizeau-type synthetic aperture telescope[J]. Chinese Optics, 2012, 5(4): 380-387. doi: 10.3788/CO.20120504.0380

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Design of optical system for Fizeau-type synthetic aperture telescope

doi: 10.3788/CO.20120504.0380

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100039, China;
3.
Air Force Resident Office at Changchun, Changchun 130033, China;
4.
The Representative office of the PLA at Jinzhou, Jinzhou 121000, China

Received Date: 15 Mar 2012
Rev Recd Date: 16 May 2012
Publish Date: 10 Aug 2012

Abstract

Abstract

An optical system for Fizeau-type synthetic aperture telescopes is designed by using three subapertures with small diameters to obtain the high resolution of an equivalent large aperture. First, considering both u-v covering of sparse frequency and structure simpleness, the Golay-3 array is choosen to be the subaperture arrangement and the filling factor F is 0.44. Then, according to the character of optical system configuration, the optical system is divided into the subapertures, ray controller and the ray combiner to be designed, respectively. The configuration of afocal subaperture is Cassegrain type with achromatic double lenses rearward, and its pupil diameter, Field of View(FOV) and angle magnification are 300 mm, 0.2 and 10, respectively. Moreover, the ray combiner is composed of 5 pieces of glass including high refractive index glass and special partial dispersion glass, and its focal length is 600 mm, F-number and FOV are 6 and 2. The Point Spread Function(PSF) and Modulation Transfer Function(MTF) of the subaperture are analysed, and the results show that the equivalent diameter of total system is 1.89 times that of the subaperture, and the angular resolution of total system is 0.24.
- Fizeau type telescope,
- synthetic aperture,
- Golay-3 array,
- optical system design

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References

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