基于链路特性的卫星网络拓扑更新周期研究  

Research on update period estimate of satellite network topology based on characteristic of link

作　　者：赵东杰[1] 杨海涛[1] 赵洪利[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《计算机应用研究》2009年第12期4669-4671,共3页Application Research of Computers

基　　金：国家"863"计划资助项目(2006AA701428)

摘　　要：针对卫星网络拓扑更新时隙划分问题,提出了一种基于链路特性的卫星网络拓扑更新周期估算方法。首先对卫星网络拓扑更新周期进行建模,分别建立了卫星覆盖时间模型、链路长度特性模型和卫星网络拓扑更新周期估算模型;然后通过对不同星座卫星的仿真验证了此方法的有效性。该方法综合覆盖时间、时延抖动和链路长度特性三个因素对网络拓扑更新周期进行估算,提供了从链路特性到网络拓扑再到路由计算的研究视角,并通过网络拓扑这个桥梁将链路特性和路由计算连接起来,使其成为有机整体,对卫星网络的有效设计有一定的指导意义。Aiming at the problem of the interval partition of satellite network topology updating, put forword a method of the updating period estimate of satellite network topology based on the characteristic of link. First, put forword three models to fulfill the modeling of updating period of satellite network topology, the models were as follows ： the model of the coverage time of satellite, the model of the characteristic of link and the model of the updating period estimate of satellite network topology, then the simulation of the satellite of different constellations was done to validate the method, achieved the updating period estimate of satellite network topology by the synthetic research of coverage time, time delay skip and the characteristic of link, provided the view of research from the characteristic of link to network topology and routing computing, and through network topology, connected the characteristic of link and routing computing with each other integrally, which had direction for the effective design of satellite network.

关 键 词：卫星网络拓扑 链路特性 覆盖时间 时延抖动 更新周期 建模与仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]