实时系统数据分布服务DDS技术综述

数据分布服务（Data Distribution Service，DDS）是对象管理组织（OMG）颁布的分布式实时系统中数据发布的一个最新规范，该规范描述了分布式实时系统中数据发布、传递和接收的接口和行为，定义了以数据为中心的发布一订阅（Data-Centri。Publish-Subscribe，D（硝）机制，提供了一个与平台无关的数据模型。对该规范进行了较详细的介绍，给出了它的两层框架结构，对DCPS层进行了探讨和研究，并将其与CORBA进行了比较，总结了其通信特点，其实际应用表明DDS是非常适合实时通信的。

Research on Data Distribution Service for Real- time Systems Specification

Data Distribution Service(DDS) is the latest specification about data distribution service for real-time systems published by OMG in December 2004.The specification describes interfaces and actions standards of data publication,sending and receiving,defines a mechanism for Data-Centric Publish-Subscribe(DCPS),and offers a data model which is independent of platforms.In this paper,the DDS is introduced,its two-layer structure and DCPS mechanism are analyzed,and its communication characters are also presented compared with CORBA.It is shown that the DDS is available for real-time system communications according to its some practical applications.