检索结果-南通市图书馆

Security analysis of satellite-to-ground reference-frame-independent quantum key distribution with beam wandering

Chinese Physics B 2024年第8期33卷 192-201页

作者：周淳赵燕美杨晓亮陆宜飞周雨姜晓磊汪海涛汪洋李家骥江木生汪翔张海龙李宏伟鲍皖苏 Henan Key Laboratory of Quantum Information and Cryptography SSF IEUZhengzhou 450001China Synergetic Innovation Centre of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

The reference-frame-independent(RFI)quantum key distribution(QKD)is suitable for satellite-based links by removing the active alignment on the reference ***,how the beam wandering influences the performance of RFI-QKD remains a pending issue in satellite-to-ground *** this paper,based on the mathematical model for characterizing beam wandering,we present the security analysis for satellite-to-ground RFI-QKD and analytically derive formulas for calculating the secret key rate with beam *** simulation results show that the performance of RFI-QKD is better than the Bennett–Brassard 1984(BB84)QKD with beam wandering in asymptotic ***,the degree of influences of beam wandering is specifically presented for satellite-to-ground RFI-QKD when statistical fluctuations are taken into *** work can provide theoretical support for the realization of RFI-QKD using satellite-to-ground links and have implications for the construction of large-scale satellite-based quantum networks.

关键词： quantum key distribution satellite-to-ground beam wandering

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on satellite-to-ground Laser Communications with Existence of Atmosphere

引用

空间科学学报 2021年第3期41卷 505-510页

作者： LI Hu HU Tai SHAO Shiyong WU Pengfei National Space Science Center Chinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 Anhui Institute of Optics and Fine Mechanics Chinese Academy of SciencesHefei 230031

The laser beam used to establish a communication channel between satellite and ground segments has a small divergence angle and a tiny spot on the Earth's surface,which may lead to the fail of the *** it's important to study the deflection of laser beam by the Earth's atmosphere and find a way to calibrate this *** theoretical analysis and real data processing method are used to obtain the mathematical model for divergence angle of laser communication beam and its correction *** the model has been applied to the data,which was used to describe the atmosphere state by traditional ground segments to obtain the critical elevation *** to the results of calculation,our conclusion will be that the correction should be done when the critical elevation happens.

关键词： Atmospheric deflection Laser communication satellite-to-ground Correction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Network Element Placement for Space-Air-ground Integrated Network:A Tutorial

引用

Chinese Journal of Electronics 2022年第6期31卷 1013-1024页

作者： GENG Yuhui CAO Xianbin CUI Huanxi XIAO Zhenyu School of Electronic and Information Engineering Beihang University

With the demand for Internet connectivity in remote areas, the space-air-ground integrated network(SAGIN) was proposed to achieve ubiquitous coverage and enhance service capabilities of extant terrestrial networks. The paradigm of virtual network element placement(NEP) is applied into SAGIN. It can save energy and operating costs by placing specific network elements(NEs) as software instances. In addition, it helps to provide services in end-to-end networks with its ability to allocate and manage resources flexibly. However, NEP faces some challenges in SAGIN. The network topologies can be dynamic, and links such as the satellite-to-ground and air-to-ground ones are prone to fail. These will make NEP management more complicated. Moreover, the static NEP schemes are hard to accommodate the time-varying traffic. In this context, this work explains the NEP problem in SAGIN from three aspects, i.e., the SAGIN radio access network(RAN), the SAGIN core network(CN), and the SAGIN barrier network(BN). First, the physical and networking architectures of SAGIN are introduced. Then the status of the network element placement and corresponding challenges are described from these two aspects. Finally, this paper discusses future research directions and key technical challenges.

关键词： space communication links NEP management satellite communication SAGIN core network topologies SAGIN barrier network topologies Internet connectivity BN SAGIN radio access network satellite-to-ground RAN space-air-ground integrated network telecommunication traffic terrestrial networks CN end-to-end networks telecommunication network topology virtual network element placement

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：