卫星互联网若干关键技术研究
Research on several key technologies of satellite Internet
- 通信学报 2021年42卷第8期 页码：1-14
- 作者机构：
1. 南京邮电大学通信与信息工程学院，江苏 南京 210003
2. 南京邮电大学卫星通信研究所，江苏 南京 210003
3. 南京邮电大学物联网学院，江苏 南京 210003
- 作者简介：
[ "张更新（1967- ），男，浙江平湖人，博士，南京邮电大学教授、博士生导师，主要研究方向为卫星通信、深空通信、空间信息网络等" ]
[ "王运峰（1986- ），男，山东滕州人，南京邮电大学博士生，主要研究方向为卫星通信、频谱感知、卫星互联网等" ]
[ "丁晓进（1981- ），男，江苏泰州人，博士，南京邮电大学副教授，主要研究方向为卫星通信、认知无线电、机器学习等" ]
[ "洪涛（1982- ），男，江苏扬州人，博士，南京邮电大学副教授，主要研究方向为卫星通信、波束成形、卫星物联网等" ]
[ "刘子威（1989- ），男，江苏南京人，博士，南京邮电大学讲师，主要研究方向为卫星通信、干扰分析、多用户检测、自适应阵列处理、通信信号处理等" ]
[ "张晨（1985- ），男，安徽淮南人，博士，南京邮电大学高级工程师，主要研究方向为卫星通信、天地一体化信息网络等" ]
- 基金信息：国家自然科学基金资助项目(91738201)
DOI：10.11959/j.issn.1000-436x.2021156
中图分类号： TN92-
网络首发：2021-08，
纸质出版：2021-08-25
- 稿件说明：
移动端阅览
张更新, 王运峰, 丁晓进, 等. 卫星互联网若干关键技术研究[J]. 通信学报, 2021,42(8):1-14.
Gengxin ZHANG, Yunfeng WANG, Xiaojin DIGN, et al. Research on several key technologies of satellite Internet[J]. Journal on Communications, 2021, 42(8): 1-14.
张更新, 王运峰, 丁晓进, 等. 卫星互联网若干关键技术研究[J]. 通信学报, 2021,42(8):1-14. DOI： 10.11959/j.issn.1000-436x.2021156.
Gengxin ZHANG, Yunfeng WANG, Xiaojin DIGN, et al. Research on several key technologies of satellite Internet[J]. Journal on Communications, 2021, 42(8): 1-14. DOI： 10.11959/j.issn.1000-436x.2021156.
摘要
卫星互联网具备全球广域无缝覆盖能力，是未来陆海空天一体化网络的重要组成部分。首先，讨论了卫星互联网体系架构，包括系统一般组成、组网方式、工作过程等，研究了卫星互联网场景下的宽带和窄带业务模型建模方法，以提取业务的空时分布不均特征；然后，分析了频谱共享中的星间同频干扰问题，初步分析表明未来非地球同步轨道（NGSO）星座间会存在较严重的同频干扰，探讨了低轨卫星波束成形设计和高轨卫星跳波束设计方案，通过高效挖掘空间域资源，可显著提升系统容量；最后，对卫星互联网领域的几个技术发展方向进行了展望。
Abstract
Satellite Internet has the ability of global seamless coverage
which will be an important part of the future land-sea-air-space integrated network.Firstly
the architecture of satellite Internet was discussed
which included the general composition of the system
networking mode
working process
etc.Secondly
the methods of modeling broadband and narrowband traffic were proposed to extract the uneven space-time distribution characteristics of traffic for satellite Internet.Then
the co-frequency interference of spectrum-sharing was analyzed
showing that there would be more serious co-frequency interference among different non-geostationary satellite orbit (NGSO) constellations in the future.Next
the schemes of both beamforming design for low earth orbit satellite and beam-hopping design for high orbit satellite were explored
which could significantly improve the system capacity through efficient mining of space-domain resources.Finally
the development prospect of several technologies of satellite Internet were given.
关键词
Keywords
references
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