天基通信与太空射电望远镜功能一体系统
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摘要
针对现有地基深空通信系统存在深空通信距离不够远、数传速率不够高等缺点,提出一种基于分布式协同控制的天基主动深空通信与太空射电望远镜功能一体系统.该系统部署在地球静止轨道上,由1颗馈源星、1颗中心星和4294颗小卫星(单元星)通过精密编队和在轨自主组装的方式构成,一体化集成天基主动深空通信功能和射电天文望远镜功能.该系统可以为深空探测器提供一个星地高速中转站,由于其部署在地球静止轨道,几乎不受大气云层影响,可以大幅度提升深空探测通信支持距离和数传速率,且能使射电天文望远镜的分辨率和灵敏度提升1~2个数量级.
In view of the shortcomings of the existing ground-based deep space communication system,such as insufficient communication distance and insufficient data rate in deep space,a space-based active communication and space radio telescope function system based on distributed cooperative control method is proposed. The system is deployed in GEO,consisting of a feed source satellite,a central satellite and4294 unit satellites,through a precise formation and on-orbit assembly. The system integrates the functions of space-based active communication and radio astronomy telescope. The system can provide a deep space station for deep space detector,due to deploying in GEO,no atmosphere and cloud,which can greatly improve the communication distance and data rate of deep space exploration. What's more,resolution and sensitivity of the radio telescope can upgrade 1-2 orders.
In view of the shortcomings of the existing ground-based deep space communication system,such as insufficient communication distance and insufficient data rate in deep space,a space-based active communication and space radio telescope function system based on distributed cooperative control method is proposed. The system is deployed in GEO,consisting of a feed source satellite,a central satellite and4294 unit satellites,through a precise formation and on-orbit assembly. The system integrates the functions of space-based active communication and radio astronomy telescope. The system can provide a deep space station for deep space detector,due to deploying in GEO,no atmosphere and cloud,which can greatly improve the communication distance and data rate of deep space exploration. What's more,resolution and sensitivity of the radio telescope can upgrade 1-2 orders.
引文
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[2]王天祥.NASA深空网的改造计划及进展[J].科技视界,2015(19):5-6.WANG T X.NASA deep space network aperture enhancement project and progress[J].Science&Technology Vision,2015(19):5-6.
[3]南仁东,张海燕,张莹,等.FAST工程建设进展[J].天文学报,2016,57(6):625-630.NAN R D,ZHANG H Y,ZHANG H Y,et al.FAST construction progress[J].Acta Astronomica Sinica,2016,57(6):625-630.
[4]南仁东.500 m球面反射面射电望远镜FAST[J].中国科学,2005,35(5):449-466.NAN R D.Five hundred meter aperture spherical radio telescope(FAST)[J].Science in China(Series G:Physics,Mechanics&Astronomy),2005,35(5):449-466.
[5]REN G X,LU Q H,HU N,et al.On vibration control with stewart parallel mechanism[J].Mechatronic,2004(14):1-13.
[6]郭永.编队飞行航天器有限时间协同控制[D].哈尔滨:哈尔滨工业大学,2016.GUO Y.Finite-time coordination control for formationflying spacecraft[D].Harbin:Harbin Institute of Technology,2016.
[7]郭熙业,周永彬,杨俊.基于导航星间链路的天基高精度时间传递方法[J].中国科学:技术科学,2017,47(1):71-79.GUO X Y,ZHOU Y B,YANG J.The space-based highprecision time transfer method based on navigation constellation inter-satellite link[J].Scientia Sinica Technologica,2017,47(1):71-79.
[8]李献斌.导航星座星间精密测距关键技术研究[D].长沙:国防科学技术大学,2015.LI X B.Research on the key technologies of inter-satellite precise ranging for navigation constellation[D].Changsha:National University of Defense Technology,2015.
[9]孙晨华.天基传输网络和天地一体化信息网络发展现状与问题思考[J].无线电工程,2017,47(1):1-6.SUN C H.Research status and problems for space-based transmission network and space-ground integrated information network[J].Radio Engineering,2017,47(1):1-6.
[10]黄惠明,常呈武.天地一体化天基骨干网络体系架构研究[J].中国电子科学研究院学报,2015,10(5):460-467.HUANG H M,CHANG C W.Architecture research onspace-based backbone network of space-ground integrated networks[J].Journal of China Academy of Electronics and Information Technology,2015,10(5):460-467.
[11]陈世杰.天基信息网络安全体系架构研究[J].通信技术,2017,50(7):1499-1505.CHEN S J.Space-based information network security architecture[J].Communications Technology,2017,50(7):1499-1505.