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

作　　者：Jun CAO Jian JIAO Hao LIU Rongxing LU Qinyu ZHANG 

机构地区：[1]Guangdong Provincial Key Laboratory of Aerospace Communication and Networking Technology,Harbin Institute of Technology Shenzhen,Shenzhen 518055,China [2]Faculty of Computer Science FCS,University of New Brunswick,Fredericton NB E3B 5A3,Canada

出　　处：《Science China(Information Sciences)》2024年第6期338-354,共17页中国科学（信息科学）（英文版）

基　　金：supported in part by National Natural Science Foundation of China(Grant Nos.62071141,62027802);Shenzhen Science and Technology Program(Grant Nos.JSGG20220831110801003,GXWD20231127123203001);Fundamental Research Funds for the Central Universities(Grant No.HIT.OCEF.2024046)。

摘　　要：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 Lagrangebased 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.

关 键 词：deep-space communication Lagrangian points backbone relay network transfer trajectory relay selection 

分 类 号：TN91[电子电信—通信与信息系统] V556.8[电子电信—信息与通信工程]