作为地面移动通信网络的补充,低轨卫星互联网已成为全球航天和通信领域的重要发展方向,以Starlink和OneWeb为代表的国外低轨星座已率先提供商用服务。面对建设天地一体化信息网络的重大机遇和挑战,能够兼容地面移动通信和卫星通信的信...作为地面移动通信网络的补充,低轨卫星互联网已成为全球航天和通信领域的重要发展方向,以Starlink和OneWeb为代表的国外低轨星座已率先提供商用服务。面对建设天地一体化信息网络的重大机遇和挑战,能够兼容地面移动通信和卫星通信的信号波形是实现星地融合通信的关键技术之一。针对OneWeb低轨星座信号波形,研究解析其帧结构和细节要点,由此分析OneWeb信号波形的关键设计参数和核心设计思路,并将OneWeb信号波形与4G/5G、数字视频广播(digital video broadcasting,DVB)等典型信号波形进行对比分析,这对我国卫星互联网星座的信号波形设计和工程实现具有一定参考价值。展开更多
1.Introduction As a key development of the next-generation spatial information infrastructure,1the Satellite-Terrestrial Integrated Network(STIN)has become a strategic priority actively pursued by major spacefaring na...1.Introduction As a key development of the next-generation spatial information infrastructure,1the Satellite-Terrestrial Integrated Network(STIN)has become a strategic priority actively pursued by major spacefaring nations and regions,including the United States,Europe,China,and Russia.Specifically,Space X’s Starlink project has deployed over 6750 satellites,2while One Web has completed its initial phase of satellite constellation deployment with more than 600 satellites.展开更多
文摘作为地面移动通信网络的补充,低轨卫星互联网已成为全球航天和通信领域的重要发展方向,以Starlink和OneWeb为代表的国外低轨星座已率先提供商用服务。面对建设天地一体化信息网络的重大机遇和挑战,能够兼容地面移动通信和卫星通信的信号波形是实现星地融合通信的关键技术之一。针对OneWeb低轨星座信号波形,研究解析其帧结构和细节要点,由此分析OneWeb信号波形的关键设计参数和核心设计思路,并将OneWeb信号波形与4G/5G、数字视频广播(digital video broadcasting,DVB)等典型信号波形进行对比分析,这对我国卫星互联网星座的信号波形设计和工程实现具有一定参考价值。
基金co-supported by the National Natural Science Foundation of China(Nos.62225103,U2441227,U24A20211)the Fundamental Research Funds for the Central Universities of China(No.FRF-TP-22-002C2)。
文摘1.Introduction As a key development of the next-generation spatial information infrastructure,1the Satellite-Terrestrial Integrated Network(STIN)has become a strategic priority actively pursued by major spacefaring nations and regions,including the United States,Europe,China,and Russia.Specifically,Space X’s Starlink project has deployed over 6750 satellites,2while One Web has completed its initial phase of satellite constellation deployment with more than 600 satellites.
