Research on the sparse aperture configuration of pseudo-Golay6

Quanying Wu; Lin Qian

doi:10.1117/12.782723

21 November 2007 Research on the sparse aperture configuration of pseudo-Golay6

Quanying Wu, Lin Qian

Proceedings Volume 6721, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 67210F (2007) https://doi.org/10.1117/12.782723
Event: 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2007, Chengdu, China

Abstract

Sparse aperture optical systems use a reduced aperture area to synthesize optical performance of a filled aperture. The relative arrangement of sub-apertures is a key for the design of sparse aperture. Golay configurations are a series of sparse apertures which are nonredundant configurations and have uniform MTF. A novel sparse aperture configuration named pseudo-Golay6 is proposed, which is also nonredundant configuration. It is based on the analysis of one dimensional array arrangement and array optimization. The relative arrangement of the sub-apertures of pupil is similar with the Golay's. The sub-apertures are arranged on the sides of the equilateral triangle. It has advantage of simple configuration and uniform MTF. The arrangement of the sub-apertures is analyzed, and the MTF is also studied. Image simulation of the pseudo-Golay6 is developed, and it has been compared with the performance of Golay6. The results show that the array of pseudo-Golay6 is nonredundant and has uniform arrangement at the spatial frequency space. The sub-MTFs of pseudo-Golay6 are not overlap except at zero frequency. The cutoff spatial frequency is highest at the direction of ^π₃, the cutoff spatial frequency is lowest at the direction of ^π₆, . The practical effective diameter of pseudo-Golay6 is larger than that of Golay6 ,and the highest cutoff spatial frequency is higher than that of Golay6 with the same fill factor. At each different direction, the sub-MTF arrangement of pseudo-Golay6 is less uniform than that of Golay6.

Citation Download Citation

Quanying Wu and Lin Qian "Research on the sparse aperture configuration of pseudo-Golay6", Proc. SPIE 6721, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 67210F (21 November 2007); https://doi.org/10.1117/12.782723

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KEYWORDS

Modulation transfer functions

Spatial frequencies

Space telescopes

Mirrors

Objectives

Optics manufacturing

Spatial resolution

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