9 June 2006 Wide-field imaging design and image restoration with optical sparse-aperture system
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Proceedings Volume 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 61493B (2006); doi: 10.1117/12.674347
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China
Abstract
An optical configuration design is presented for the ground testbed. The system includes three sub-telescopes as the collecting elements, and a combination telescope. The goal is to produce an image with a "quality" equivalent to a filled monolithic aperture. The system has a diffraction limited field-of-view of 0.1 degrees. The subsystem utilizes non-spherical primary and secondary mirrors. Also, several image restoration techniques are analyzed in details, which are applied to sparse-aperture imaging system in frequency domain. The performances of the restoration techniques are compared under different circumstances, such as the aperture configurations, the fill factors, and the level of noise. The correlation coefficient is proposed as a criterion to determine optimal parameter, and evaluate the performance of algorithms. Simulation results demonstrate its possibility. Some suggestions are given for better restoration(resolution) of sparse-aperture imaging system.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dayong Wang, Jun Chang, Hancheng Liu, Hongfeng Guo, Shiquan Tao, "Wide-field imaging design and image restoration with optical sparse-aperture system", Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 61493B (9 June 2006); doi: 10.1117/12.674347; https://doi.org/10.1117/12.674347
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KEYWORDS
Image restoration

Imaging systems

Mirrors

Modulation transfer functions

Image processing

Telescopes

Space telescopes

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