An in-orbit correction method based on CNN for the figure errors and component misalignments of TMA telescope

Bingdao Li, Xiaofang Zhang*, Yun Gu, Xinqi Hu

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

To realize the fast and simple in-orbit aberration correction of TMA telescope, an aberration correction method based on Convolutional Neural Network (CNN) is proposed. CNN is trained to establish the relationship between the defocus point spread function and the misalignments of the secondary mirror. The wavefront aberration caused by the figure errors of the primary mirror and the misalignments of the secondary mirror and the tertiary mirror can be compensated by adjusting the secondary mirror according to the outputs of the well-trained CNN (named as Cor-Net). This method can correct the system aberration quickly and the RMS of the system wavefront aberration is reduced from about 1.5 λ to 0.1 λ by only three correction cycles.

源语言英语
主期刊名Optical Design and Testing XII
编辑Yongtian Wang, Tina E. Kidger, Rengmao Wu
出版商SPIE
ISBN(电子版)9781510656963
DOI
出版状态已出版 - 2023
活动Optical Design and Testing XII 2022 - Virtual, Online, 中国
期限: 5 12月 202211 12月 2022

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
12315
ISSN(印刷版)0277-786X
ISSN(电子版)1996-756X

会议

会议Optical Design and Testing XII 2022
国家/地区中国
Virtual, Online
时期5/12/2211/12/22

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