首页|Two-layer Lagrange-based relay network topology and trajectory design for solar system explorations

Two-layer Lagrange-based relay network topology and trajectory design for solar system explorations

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Exploration targeting outer planets and even the edge of the solar system is an emerging direction for the deep-space exploration in the next decades.To address this challenge,a novel two-layer Lagrange-based relay network topology is proposed in this study.Specifically,we utilize the Sun-Mars and Sun-Saturn Lagrange points(LPs)L4 and L5 to build a two-layer backbone relay network,which ensures continuous and high-efficiency communication capability for the exploration of the solar system.Furthermore,we utilize the planetary gravity assist and design the transfer trajectory of backbone relays with the help of planetary celestial body motion equations and Kepler's laws.Moreover,we conduct link budget analysis for multihop relay transmission under Gamma-Gamma distribution,shadowed Rician fading,and additive white Gaussian noise channels in several typical exploration scenarios and validate that the LP relays can effectively support future deep-space exploration missions.

deep-space communicationLagrangian pointsbackbone relay networktransfer trajectoryrelay selection

Jun CAO、Jian JIAO、Hao LIU、Rongxing LU、Qinyu ZHANG

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Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology(Shenzhen),Shenzhen 518055,China

Faculty of Computer Science(FCS),University of New Brunswick,Fredericton NB E3B 5A3,Canada

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShenzhen Science and Technology ProgramShenzhen Science and Technology ProgramFundamental Research Funds for the Central Universities

6207114162027802JSGG20220831110801003GXWD20231127123203001HIT.OCEF.2024046

2024

中国科学:信息科学(英文版)
中国科学院

中国科学:信息科学(英文版)

CSTPCDEI
影响因子:0.715
ISSN:1674-733X
年,卷(期):2024.67(6)
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