Wide-field imaging design and image restoration with optical sparse-aperture system

Dayong Wang; Jun Chang; Hancheng Liu; Hongfeng Guo; Shiquan Tao

doi:10.1117/12.674347

9 June 2006 Wide-field imaging design and image restoration with optical sparse-aperture system

Dayong Wang, Jun Chang, Hancheng Liu, Hongfeng Guo, Shiquan Tao

Proceedings Volume 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 61493B (2006) https://doi.org/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.

Citation Download Citation

Dayong Wang, Jun Chang, Hancheng Liu, Hongfeng Guo, and 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); https://doi.org/10.1117/12.674347

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