The co-phasing detection method for sparse optical synthetic aperture systems

Co-phasing between different sub-apertures is important for sparse optical synthetic aperture telescope systems to achieve high-resolution imaging. For co-phasing detection in such a system, a new aspect of the system＇s far-field interferometry is analysed and used to construct a novel method to det...

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Bibliographic Details
Published inChinese physics B Vol. 21; no. 6; pp. 600 - 607
Main Author 刘政 王胜千 饶长辉
Format Journal Article
LanguageEnglish
Published 01.06.2012
Subjects
Construction
Criteria
Effectiveness
Error analysis
Error detection
Interferometry
Pistons
Synthetic apertures
Telescopes
光学
合作
合成孔径
子孔径
望远镜系统
相位检测
稀疏
高分辨率成像
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/21/6/069501

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Summary:Co-phasing between different sub-apertures is important for sparse optical synthetic aperture telescope systems to achieve high-resolution imaging. For co-phasing detection in such a system, a new aspect of the system＇s far-field interferometry is analysed and used to construct a novel method to detect piston errors. An optical setup is built to demonstrate the efficacy of this method. Experimental results show that the relative differences between measurements by this method and the criterion are less than 4%, and their residual detecting errors are about 0.01 A for different piston errors, which makes the use of co-phasing detection within such a system promising.
Bibliography:Co-phasing between different sub-apertures is important for sparse optical synthetic aperture telescope systems to achieve high-resolution imaging. For co-phasing detection in such a system, a new aspect of the system＇s far-field interferometry is analysed and used to construct a novel method to detect piston errors. An optical setup is built to demonstrate the efficacy of this method. Experimental results show that the relative differences between measurements by this method and the criterion are less than 4%, and their residual detecting errors are about 0.01 A for different piston errors, which makes the use of co-phasing detection within such a system promising.
Liu Zheng, Wang Sheng-Qian, and Rao Chang-Hui（ a） Key Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China b） College of Photon-Electron Science and Engineering, National University of Defense Technology, Changsha 410073, China
sparse-optical-synthetic-aperture, co-phasing detection, piston error
11-5639/O4
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/6/069501