基于光学技术的新一代全球导航定位定时系统架构  

New Generation of Global Navigation Positioning and Timing System Based on Optical Technology

作　　者：杨飞[1] 陈迪俊[1] 韩申生[1] 蔡海文[1] 陈卫标[1] Yang Fei;Chen Dijun;Han Shensheng;Cai Haiwen;Chen Weibiao(Key Laboratory of Space Laser Communication and Detection Technology,Aerospace Laser Technology and System Department,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]中国科学院上海光学精密机械研究所空天激光技术与系统部,中国科学院空间激光信息传输与探测技术重点实验室,上海201800

出　　处：《中国激光》2024年第11期315-324,共10页Chinese Journal of Lasers

基　　金：国家重点研发计划(2022YFB3902503);国家自然科学基金(12293033);中国科学院先导项目(XDB43030401);中国科学院科研仪器设备研制项目(YJKYYQ20210017);中国科学院青年创新促进会项目(YIPA2019251)。

摘　　要：全球导航卫星系统(GNSS)已经深入现代信息化智能化社会的方方面面,发挥了巨大作用。充分发挥光频参考、自由空间激光链路等光学技术优势有助于解决其进一步发展所面临的地面依赖、精度提升等问题。美国、德国、中国分别提出了基于光链路的时空参考(O-STR)、第三代全球导航定位系统(Kepler)、基于光学技术的新一代全球导航定位定时系统(O-GNSS)等概念。对基于光学技术的新一代全球导航定位定时系统的总体设计、关键技术等进行分析,综述了主要的研究进展,为推动我国时空基准和导航定位定时方面的技术发展提供参考。Significance The global navigation satellite system(GNSS)has been widely used in the modern information society.But it still faces some problems like ground dependence and accuracy improvement.The advantages of optical technology such as optical frequency reference and free space laser link would help to solve the problems.The United States,Germany and China have respectively proposed concepts such as space-time reference based on optical link(O-STR),the third generation global navigation satellite system Kepler,and new generation global navigation and positioning timing system based on optical technology O-GNSS.This paper summarizes the main research progress of their architecture,prototype,and key technologies,providing a reference for promoting the development of space-time reference and navigation positioning timing technology.Progress The core idea of O-GNSS which was proposed by Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences(SIOM,CAS)is to make full use of the outstanding advantages of optical frequency reference and optical inter-satellite link to realize space self-maintenance of the space-time reference.It has an important foundation in the overall design,optical frequency reference,optical frequency comb,space laser link,fiber time-frequency synchronization and many other key technologies.The designed prototype system is based on the Beidou constellation,including inclined geosynchronous orbit(IGSO)and geostationary orbit(GEO)satellites,and integrating low earth orbit(LEO)communication constellation.The GEO/IGSO satellite will be equipped with a cavity stabilized frequency reference,iodine/rubidium long-term stabilized light clock,laser communication-range synchronization integrated terminal(LCT),and space reference interferometry terminal.The medium earth orbit(MEO)satellite is equipped with a cavity stabilized laser,optical frequency comb and LCT.Global synchronization with picosecond level accuracy,absolute ranging with sub-millimeter level precision and communication wit

关 键 词：遥感 全球导航定位定时 光频参考 空间激光链路 

分 类 号：P228.4[天文地球—大地测量学与测量工程] TN249[天文地球—测绘科学与技术]