High performance receiving and processing technology in satellite beam hopping communication

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外文摘要：Beam-hopping technology has become one of the major research hotspots for satellite communication in order to enhance their communication capacity and flexibility.However,beam hopping causes the traditional continuous time-division multiplexing signal in the forward downlink to become a burst signal,satellite terminal receivers need to solve multiple key issues such as burst signal rapid synchronization and high-per-formance reception.Firstly,this paper analyzes the key issues of burst communication for traffic signals in beam hopping sys-tems,and then compares and studies typical carrier synchro-nization algorithms for burst signals.Secondly,combining the requirements of beam-hopping communication systems for effi-cient burst and low signal-to-noise ratio reception of downlink signals in forward links,a decoding assisted bidirectional vari-able parameter iterative carrier synchronization technique is pro-posed,which introduces the idea of iterative processing into car-rier synchronization.Aiming at the technical characteristics of communication signal carrier synchronization,a new technical approach of bidirectional variable parameter iteration is adopted,breaking through the traditional understanding that loop struc-tures cannot adapt to low signal-to-noise ratio burst demodula-tion.Finally,combining the DVB-S2X standard physical layer frame format used in high throughput satellite communication systems,the research and performance simulation are con-ducted.The results show that the new technology proposed in this paper can significantly shorten the carrier synchronization time of burst signals,achieve fast synchronization of low signal-to-noise ratio burst signals,and have the unique advantage of flexible and adjustable parameters.

外文关键词：

beam-hoppinghigh throughput satellitehigh per-formancereception processing

作者：

ZHAI Shenghua、HUI Tengfei、GONG Xianfeng、ZHANG Zehui、GAO Xiaozheng、YANG Kai

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作者单位：

School of Communication Engineering,Xi'Dian University,Xian 710126,China

CAST(China Academy of Space Technology)-Xi'an Institute of Space Radio Technology,Xi'an 710010,China

School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China

School of Information and Electronics, Beijing Institute of Technol-ogy, Beijing 100081, China

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基金：

Key Research and Development Program of ShaanxiApplication Innovation Program of CASC(China Aerospace Science and Technology Corporation)Research Project on Civil Aerospace TechnologyResearch Project of CASTResearch Foundation of the Key Laboratory of Spaceborne Information Intelligent Interpretation

项目编号：

2022ZDLGY05-086230107001D040304Y23-WYHXJS-072022-ZZKY-JJ-20-01

出版年：

2024

DOI：

10.23919/JSEE.2024.000076

系统工程与电子技术(英文版)

中国航天科工防御技术研究院中国宇航学会中国系统工程学会中国系统仿真学会

系统工程与电子技术(英文版)

CSTPCD

影响因子：0.64

ISSN：1004-4132

年,卷(期)：2024.35(4)