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Optical Engineering

Experimental study on imaging and image restoration of optical sparse aperture systems
Author(s): Dayong Wang; Ji Han; Hancheng Liu; Shiquan Tao; Xiyang Fu; Hongfeng Guo
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Paper Abstract

Optical sparse-aperture systems can be designed to obtain a high resolution when imaging an astronomical object. These systems are the arrays synthesized by several small filled imaging systems. A principal experiment is set up for an optical sparse-aperture system by which imaging of an extended complex object is achieved. Image restoration of the direct output by the sparse-aperture system is performed by measuring the point-spread functions (PSF) and by using a Weiner filter. The correlation coefficient is proposed as a criterion to determine the optimal parameter and to evaluate the performance of the algorithms. The results show that among the three kinds of configuration models, the Tri-Arm array configuration can produce the highest resolution and largest correlation coefficient value after the restoration. Accordingly, the experimental data, demonstrate that an optical sparse-aperture system can achieve almost the same resolution and image quality as an equivalent filled system.

Paper Details

Date Published: 1 October 2007
PDF: 7 pages
Opt. Eng. 46(10) 103201 doi: 10.1117/1.2799512
Published in: Optical Engineering Volume 46, Issue 10
Show Author Affiliations
Dayong Wang, Beijing Univ. of Technology (China)
Ji Han, Beijing Univ. of Technology (China)
Hancheng Liu, Beijing Univ. of Technology (China)
Shiquan Tao, Beijing Univ. of Technology (China)
Xiyang Fu, National Astronomical Observatories (China)
Hongfeng Guo, National Astronomical Observatories (China)

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