基于多播技术RTI时间管理服务设计的研究  

Research for the Design of Time Management Services in RTI Based on Multicast

作　　者：李拥军[1] 刘步权[2] 

机构地区：[1]华南理工大学计算科学与工程学院,广州510641 [2]国防科学技术大学计算机学院,长沙410073

出　　处：《计算机科学》2004年第11期50-52,共3页Computer Science

基　　金：国家自然科学基金(项目编号:10071097)

摘　　要：高层体系结构HLA已经成为分布式仿真领域的热门技术,HLA规范的核心是基于"公布/定购"关系基础之上的盟员间的数据交换策略,多播技术能够有效地适应这一需求并在众多的RTI软件中得到了广泛的应用。具有高可靠性要求的时间管理服务是RTI软件设计的难点,然而多播技术本质上是一种不可靠的UDP数据传输方式,本文提出了一种使用多播技术来实现时间管理中最大可用逻辑时间GALT计算的机制。High Level Architecture has been one of the hottest technologies in distributed simulation area. The key idea in HLA is the Publishing/Subscribing policy of data exchange among federates,and multicast protocol can effectively adapt to this demand and in fact has been widely applied into many RTI software. Time management with high reliability is one challengeable question in designing RTI software,but multicast protocol is a non-reliable UDP dataexchanging mechanism essentially. In this paper,a reliable implementing technology based on multicast protocol is put forward in computing GALT(Greatest Available Logical Time) in time management.

关 键 词：多播技术 RTI 高层体系结构HLA 分布式仿真 UDP 数据交换 GALT 时间管理 服务设计 盟员 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TP393[自动化与计算机技术—计算机科学与技术]