Testing of the stochastic parallel radient descent algorithm for the alignment of a two-mirror telescope

doi:10.1364/JOT.87.000276

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 自适应光学技术研究室（八室）

	Testing of the stochastic parallel radient descent algorithm for the alignment of a two-mirror telescope
	Li, Min 1,2,3; Liu, Xin 3; Zhang, Ang 3; Xian, Hao 1,3
刊名	Journal of Optical Technology (A Translation of Opticheskii Zhurnal)
	2020-05-01
卷号	87 期号:5 页码:276-283
ISSN号	1070-9762
DOI	10.1364/JOT.87.000276
文献子类	期刊论文
英文摘要	The precise alignment of a high-performance, wide-field telescope is a key factor to ensure its imaging quality. The sharpness function of far-field images combined with an optimization algorithm is one of the most commonly used telescope alignment methods because of its advantages of having a concise measurement system, a simple calculation process, and wide application fields. In this paper, a Cassegrain telescope with two mirrors is aligned by maximizing the sharpness function of far-field images using the stochastic parallel gradient descent algorithm. To verify the effects of this method, both numerical simulations and experiments are implemented. The misalignments are corrected only after a few iterations, indicating that the stochastic parallel gradient descent algorithm can align the telescope rapidly. What's more, wavefront errors are measured using a Shack-Hartmann wavefront sensor to confirm the accuracy. The results show that this method can align a telescope that is in a misaligned working state with large misalignment errors rapidly and accurately, and the image quality after correction is improved greatly. © 2020 Optical Society of America
语种	英语
WOS记录号	WOS:000581263000004
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10077]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	1.Key Laboratory of Adaptive Optics, Chinese Academy of Sciences, Chengdu, Sichuan, China; 2.University of Chinese Academy of Sciences, Beijing, China 3.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan, China;
推荐引用方式 GB/T 7714	Li, Min,Liu, Xin,Zhang, Ang,et al. Testing of the stochastic parallel radient descent algorithm for the alignment of a two-mirror telescope[J]. Journal of Optical Technology (A Translation of Opticheskii Zhurnal),2020,87(5):276-283.
APA	Li, Min,Liu, Xin,Zhang, Ang,&Xian, Hao.(2020).Testing of the stochastic parallel radient descent algorithm for the alignment of a two-mirror telescope.Journal of Optical Technology (A Translation of Opticheskii Zhurnal),87(5),276-283.
MLA	Li, Min,et al."Testing of the stochastic parallel radient descent algorithm for the alignment of a two-mirror telescope".Journal of Optical Technology (A Translation of Opticheskii Zhurnal) 87.5(2020):276-283.