Orbit design of satellite quantum key distribution constellations in different ground stations networks

被引:3
|
作者
De Grossi, Federico [1 ]
Alberico, Stefano [2 ]
Circi, Christian [1 ]
机构
[1] Sapienza Univ Rome, Via Salaria 851, I-00138 Rome, Italy
[2] Skudo OU, Tartu mnt 84a-34, EE-10112 Tallinn, Estonia
关键词
Quantum key distribution; Constellation design; Inter -satellite quantum links; Cryptography; Satellite constellation optimization; CRYPTOGRAPHY;
D O I
10.1016/j.asr.2023.01.056
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
In the field of Cryptography, Quantum Key Distribution (QKD) is an application of Quantum Information theory that obtained a great deal of attention in recent years. It allows to establish secret keys between two or more parties, in a much safer way than that implemented by classic cryptography (based on discrete logarithms and factorization of prime numbers). The most promising way of realizing a QKD network (especially over great distances) in the near future is by a constellation of satellites. This paper considers the problem of optimizing the orbits of the satellites in order to maximize the minimum key length shared in a network of ground stations over a fixed amount of time. Different networks of stations are considered and the influence of their geographical disposition on the design and the performance index is highlighted. The networks considered are: a global constellation, a regional European constellation, and two in which there are groups of stations in two different narrow bands of latitude. The effect of Inter-satellite links is then taken into account and how, in some cases, they can improve the performances. Finally the daily performance of the considered constellations are analyzed. (c) 2023 COSPAR. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
引用
收藏
页码:5446 / 5463
页数:18
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