A method for optical ground station reduce alignment error in satellite-ground quantum experiments

doi:10.1117/12.2306707

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	A method for optical ground station reduce alignment error in satellite-ground quantum experiments
	He, Dong 1,2,3; Wang, Qiang 1,2; Zhou, Jian-Wei 1,2; Song, Zhi-Jun 1,2; Zhong, Dai-Jun 1,2; Jiang, Yu 1,2; Liu, Wan-Sheng 1,2; Huang, Yong-Mei 1,2
	2018
会议日期	NOV 24-26, 2017NOV 24-26, 2017
会议地点	Shanghai, PEOPLES R CHINAShanghai, PEOPLES R CHINA
关键词	optical ground station quantum communication Micius satellite ATP optical axis alignment hexapod secondary mirror
卷号	10710
DOI	10.1117/12.2306707
页码	1071004
英文摘要	A satellite dedicated for quantum science experiments, has been developed and successfully launched from Jiuquan, China, on August 16, 2016. Two new optical ground stations (OGSs) were built to cooperate with the satellite to complete satellite-ground quantum experiments. OGS corrected its pointing direction by satellite trajectory error to coarse tracking system and uplink beacon sight, therefore fine tracking CCD and uplink beacon optical axis alignment accuracy was to ensure that beacon could cover the quantum satellite in all time when it passed the OGSs. Unfortunately, when we tested specifications of the OGSs, due to the coarse tracking optical system was commercial telescopes, the change of position of the target in the coarse CCD was up to 600 mu rad along with the change of elevation angle. In this paper, a method of reduce alignment error between beacon beam and fine tracking CCD is proposed. Firstly, OGS fitted the curve of target positions in coarse CCD along with the change of elevation angle. Secondly, OGS fitted the curve of hexapod secondary mirror positions along with the change of elevation angle. Thirdly, when tracking satellite, the fine tracking error unloaded on the real-time zero point position of coarse CCD which computed by the firstly calibration data. Simultaneously the positions of the hexapod secondary mirror were adjusted by the secondly calibration data. Finally the experiment result is proposed. Results show that the alignment error is less than 50 mu rad.
会议录	Proceedings of SPIE - YOUNG SCIENTISTS FORUM 2017
文献子类	C
语种	英语
ISSN号	0277-786X
WOS记录号	WOS:000451888100003
WOS关键词	COMMUNICATION
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/9130]
专题	光电技术研究所_光电工程总体研究室（一室）
作者单位	1.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu; 610209, China; 2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式 GB/T 7714	He, Dong,Wang, Qiang,Zhou, Jian-Wei,et al. A method for optical ground station reduce alignment error in satellite-ground quantum experiments[C]. 见:. Shanghai, PEOPLES R CHINAShanghai, PEOPLES R CHINA. NOV 24-26, 2017NOV 24-26, 2017.