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A method for optical ground station reduce alignment error in satellite-ground quantum experiments
He, Dong1,2,3; Wang, Qiang1,2; Zhou, Jian-Wei1,2; Song, Zhi-Jun1,2; Zhong, Dai-Jun1,2; Jiang, Yu1,2; Liu, Wan-Sheng1,2; Huang, Yong-Mei1,2
Source PublicationProceedings of SPIE - YOUNG SCIENTISTS FORUM 2017
Volume10710
Pages1071004
2018
Language英语
ISSN0277-786X
DOI10.1117/12.2306707
Indexed BySCI ; Ei
WOS IDWOS:000451888100003
EI Accession Number20181505006921
SubtypeC
AbstractA 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.
Keywordoptical ground station quantum communication Micius satellite ATP optical axis alignment hexapod secondary mirror
WOS KeywordCOMMUNICATION
EI KeywordsAdenosinetriphosphate ; Calibration ; Errors ; Lunar missions ; Mirrors ; Optical communication ; Optical systems ; Quantum communication ; Satellite ground stations ; Satellites
Conference NameYoung Scientists ForumYoung Scientists Forum
Conference DateNOV 24-26, 2017NOV 24-26, 2017
Conference PlaceShanghai, PEOPLES R CHINAShanghai, PEOPLES R CHINA
EI Classification Number655.2 Satellites ; 655.2.1 Communication Satellites ; 716 Telecommunication ; Radar, Radio and Television ; 717.1 Optical Communication Systems ; 741.3 Optical Devices and Systems ; 804.1 Organic Compounds
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Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9130
Collection光电工程总体研究室(一室)
Affiliation1.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
Recommended Citation
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],2018:1071004.
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