摘要
卫星通信网络与地面移动通信网络融合,可提供低时延、广覆盖的泛在接入服务。相控阵天线作为星地传输端到端信息获取的射频前端,具有剖面低、波束成形灵活、多维参数捷变等优点,但也面临降低成本及功耗、增加宽带传输能力、提高宽角扫描性能等方面的挑战。与现有相关综述关注相控阵天线设计流程及制造工艺不同,对相控阵天线在星地融合网络中的应用研究进行综述。首先,阐述相控阵天线的不同架构和特点。其次,总结应对挑战的若干关键技术,包括波束凝视、高精度波束指向、低成本、多波束等。最后,展望在分布式星群组网、高频段演进和通信感知融合等场景中的发展趋势和研究方向。
Ubiquitous and low-latency broadband access services can be obtained with the convergence of satellite and terrestrial networks.Phased array has the advantages of low-profile,flexible beamforming and rapid configuration of parameters,and it has been treated as the ideal candidate radio frequency front-end in information transmission between satellites and terrestrial terminals.However,phased array must cope with the challenges of reducing cost and power consumption,increasing broadband transmission capacity and improving wide-angle scanning performance.Most existing reviews concentrate on the design and manufacturing process of phased arrays.Different from these works,focuses on the recent advances of phased array application in satellite-terrestrial convergence networks.Firstly,we elaborate on basic architectures and characteristics of phased array.Then,we summarize several key technologies to address the challenges,such as beam staring,high-precision beam pointing,low-cost design and multi-beam beamforming ability.Finally,we envision the future development trends and research directions in multiple scenario,such as distributed satellite clusters,high-frequency evolution and the integration of communication and sensing.
作者
刘越
黄印
林玉洁
降佳伟
何江涛
杨健
LIU Yue;HUANG Yin;LIN Yujie;JIANG Jiawei;HE Jiangtao;YANG Jian(Beijing Institute of Remote Sensing Equipment,Beijing 100854,China;School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China;Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China)
出处
《空间电子技术》
2023年第6期52-63,共12页
Space Electronic Technology
基金
国家自然科学基金(编号:62001030)。
关键词
卫星通信
低轨星座
星地融合
相控阵天线
satellite communication
low earth orbit constellation
convergence of satellite and terrestrial networks
phased array
作者简介
刘越(1989-),天津人,博士,工程师。主要研究方向为卫星通信网络总体设计技术。E-mail:liuyue_11122@sina.com。
