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Co-phasing measurement for segmented mirrors and image retrieval technology based on phase diversity
Luo, Qun1,2,3; Ning, Yu3; Huang, Lin-Hai1,2; Gu, Nai-Ting1,2; Rao, Chang-Hui1,2; Luo, Q.
Volume8417
Pages84171Y
2012
Language英语
ISSN0277786X
DOI10.1117/12.975815
Indexed ByEi
Subtype会议论文
AbstractIn order to improve the imaging resolution of a segmented telescope, the co-phasing error of segmented mirrors must be accurately measured and corrected. Phase Diversity (PD) refers to a technique of image-based wavefront sensing, and it could estimate both the unknown phase parameters and the unknown object. In this paper, the Phase diversity is proposed to measure the co-phasing errors and retrieve the unknown object for segmented mirrors, and the performance of this technique is simulated for point source and extended source. The simulation results demonstrate that the Phase Diversity Wavefront Sensor (PD WFS) can synchronously measure the piston errors of multi-segmented mirrors and the quality of the retrieved image is much better than before. The Phase Diversity Wavefront Sensor can be used to measure the co-phasing errors and retrieve the unknown object for the segmented mirror system. © 2012 SPIE.; In order to improve the imaging resolution of a segmented telescope, the co-phasing error of segmented mirrors must be accurately measured and corrected. Phase Diversity (PD) refers to a technique of image-based wavefront sensing, and it could estimate both the unknown phase parameters and the unknown object. In this paper, the Phase diversity is proposed to measure the co-phasing errors and retrieve the unknown object for segmented mirrors, and the performance of this technique is simulated for point source and extended source. The simulation results demonstrate that the Phase Diversity Wavefront Sensor (PD WFS) can synchronously measure the piston errors of multi-segmented mirrors and the quality of the retrieved image is much better than before. The Phase Diversity Wavefront Sensor can be used to measure the co-phasing errors and retrieve the unknown object for the segmented mirror system. © 2012 SPIE.
Conference NameProceedings of SPIE: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment
Conference Date2012
Citation statistics
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7785
Collection自适应光学技术研究室(八室)
Corresponding AuthorLuo, Q.
Affiliation1. Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
2. Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China
3. College of Opto-Electronics Science and Engineering, National University of Defense Technology, Changsha 410073, China
Recommended Citation
GB/T 7714
Luo, Qun,Ning, Yu,Huang, Lin-Hai,et al. Co-phasing measurement for segmented mirrors and image retrieval technology based on phase diversity[C],2012:84171Y.
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