多层卫星通信网络结构设计与分析  

Design and Analysis of Multilayer Satellite Communication Network Structure

作　　者：肖楠[1] 梁俊[1] 张基伟[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《现代防御技术》2012年第3期104-108,共5页Modern Defence Technology

摘　　要：针对单层卫星网络时延高、网络阻塞概率大等问题,研究了多层卫星网络的系统结构及其特点。结合不同轨道卫星特点,引入分层卫星网络结构,采用Walker和极轨星座覆盖带设计法,设计了多层卫星网络星座。采用"弱连接"模型作为星际链路建立的基本原则,并对星座的覆盖性能和星际链路特性进行了仿真分析,结果表明,多层卫星网络在覆盖特性和星际链路性能上更具优势。In allusion to the issues of single satellite network such as long time-delay, high rate of net congestion, the structure and characteristics of the muhilayer satellite network is studied. The structure of layered satellite network is introduced combined with the features of satellites in different orbit heights. A constellation of muhilayer satellite network is designed with the method of Walker and coverage band of polar-orbit. The weak-connect model is introduced as the basic principle of inter satellite link （ISL） foundation. The coverage rate of the constellation and the identity of ISL are simulated and analyzed, and the result indicates that the Multilayer satellite network has more advantages on coverage abili- ty and ISL identity.

关 键 词：卫星通信 多层网络 星座设计 星际链路 “弱连接”模型 

分 类 号：TN927.2[电子电信—通信与信息系统] TN915[电子电信—信息与通信工程]