基于改进超邻接矩阵和熵权-TOPSIS的卫星互联网关键节点识别  

Identification of Satellite Internet Key Nodes Based on Improved SAM and EW-TOPSIS

作　　者：杨仪菲 王海南[1] 刘雅楠 许洁林 YANG Yi-fei;WANG Hai-nan;LIU Ya-nan;XU Jie-lin(China Aerospace Academy of Systems Science and Engineering,Beijing 100037,China)

机构地区：[1]中国航天系统科学与工程研究院,北京100037

出　　处：《科学技术与工程》2024年第29期12411-12421,共11页Science Technology and Engineering

基　　金：国防科技工业技术基础科研计划(JSQB2022203D004)。

摘　　要：“一星多用、多星组网、多网协同”思想的发展与应用为卫星互联网的关键节点识别带来了更多的挑战,也提出了更高的要求。针对卫星时序网络节点评估结果不准确的问题,考虑了不同时间片拓扑之间的耦合强度,提出了一种基于改进超邻接矩阵(supra-adjacency matrix,SAM)的卫星互联网时序网络模型。随后,综合卫星节点在网络中固有的拓扑特性和通信特性,选取特征向量中心性、介数中心性、节点紧密度、传输时延、传输速率和传输容量指标建立了节点重要度综合评估指标体系,在此基础上,基于熵权-逼近理想解排序法(technique for order preference by similarity to an ideal solution,TOPSIS)和时间权重矩阵设计了卫星互联网节点重要度评估方法。通过ARPANET和铱星星座进行仿真验证,实验结果证明了所提出的模型和方法能够准确地从局部和全局角度获得卫星节点重要度排序,并识别出潜在重要节点,对卫星互联网关键节点识别及抗毁性研究有一定的参考意义。The development and application of the “one-star multi-purpose,multi-star networking,multi-network collaboration” concept is bringing challenges and imposing higher requirements for the identification of satellite internet key nodes.To solve the problem of inaccurate node evaluation in dynamic satellite networks,an enhanced supra-adjacency matrix(SAM)-based model was proposed.Additionally,taking into account the inherent topological and communicative characteristics of satellite nodes,a comprehensive index system for evaluating node importance was established through the selection of indices such as betweenness centrality,closeness centrality,eigenvector centrality,transmission delay,rate,and capacity.By entropy-weighted technique for order preference by similarity to an ideal solution(TOPSIS) and time-weight matrices,an evaluation algorithm for the determination of the significance of satellite Internet nodes was designed.Simulation results from ARPANET and the Iridium constellation are shown to demonstrate that the proposed model and method not only can sequence the satellite nodes accurately from both local and global perspectives,but also can identify the potential key nodes effectively.These findings are considered to hold significant reference value for the future research of the identification of satellite Internet key nodes.

关 键 词：卫星互联网 复杂网络 节点评估 超邻接矩阵 TOPSIS 

分 类 号：O157.6[理学—数学]