中国物理B ›› 2012, Vol. 21 ›› Issue (6): 69501-069501.doi: 10.1088/1674-1056/21/6/069501

• GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS • 上一篇    下一篇

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

刘政a b, 王胜千a, 饶长辉a   

  1. 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
  • 收稿日期:2012-02-09 修回日期:2012-03-05 出版日期:2012-05-01 发布日期:2012-05-01
  • 基金资助:
    Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61008038).

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

Liu Zheng(刘政)a)b)†, Wang Sheng-Qian(王胜千)a), and Rao Chang-Hui(饶长辉)a)   

  1. 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
  • Received:2012-02-09 Revised:2012-03-05 Online:2012-05-01 Published:2012-05-01
  • Contact: Liu Zheng E-mail:liuzhengIOE@yeah.net
  • Supported by:
    Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61008038).

摘要: 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 λ for different piston errors, which makes the use of co-phasing detection within such a system promising.

关键词: sparse-optical-synthetic-aperture, co-phasing detection, piston error

Abstract: 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 λ for different piston errors, which makes the use of co-phasing detection within such a system promising.

Key words: sparse-optical-synthetic-aperture, co-phasing detection, piston error

中图分类号:  (Ground-based ultraviolet, optical and infrared telescopes)

  • 95.55.Cs
42.30.Va (Image forming and processing) 42.15.Fr (Aberrations)