【摘要】 针对传统基于消息队列或共享内存模式的测控(TT&C)消息中间件(MOM)紧耦合、可扩展能力有限的问题,结合目前测控计算机系统信息交换特点,提出了功能分布式结构的发布/订阅(Pub/Sub)模式测控消息中间件系统。取消了集中的发布/订阅服务器,将其功能嵌入到功能分布的处理机单元中,设计了主题全局注册、订阅全局广播和事件本地过滤的工作模式;并通过可靠多播协议实现其传输可靠性,通过软双工模式下的虚拟IP机制和加速推拉心跳检测机制实现其节点可靠性。实验表明此测控消息中间件系统的发布/订阅平均响应时间控制在100 ms之内,多播协议丢包率控制在0.86×10-7左右,双工切换延时达到56 ms,满足测控应用的强实时性和高可靠性要求。更多还原

【Abstract】 Aiming at the problem that Teleme Try and Command( TT&C) Message-Oriented Middleware( MOM) with traditional model like message queue and shared memory has the disadvantage of tightly coupling and limited extensible ability.Combining with the current characteristics of TT&C computer system, a function distributed TT&C MOM system with Publish /Subscribe( Pub / Sub) model was put forward. Centralized publish / subscribe server was canceled with its function embedded into the distributed processing unit. The working process of themes global registration, subscriptions global broadcasting and event local matching were designed. And its transmission reliability was achieved through the reliable multicast protocol, its nodes reliability was achieved by soft duplex with virtual IP mechanism and accelerated push-pull heartbeat detection.Experiments show that the average response time of Pub / Sub message is controlled within 100 ms, the packet loss rate of multicast protocol is around 0. 86 × 10- 7, duplex switch delay is up to 56 ms. This TT&C MOM system with Pub / Sub model satisfies the requirement of highly real-time performance and reliability of TT&C applications.更多还原