基于RT-TCP/IP的DIS系统对象交互研究

Research on Object Interaction for DIS Based on RT-TCP/IP

DIS系统对于小型分布式仿真系统具有较好的性能与较低的成本。基于RT-TCP/IP网络环境设计了一种DIS系统对象的交互机制,针对RT-TCP/IP环境的特点对对象交互PDU进行了重新设计;针对网络传输的固有延迟,采用时戳机制与DR补偿模型对延迟进行修正;并借鉴HLA_RTI中的关于数据管理的一些思想,设计了数据过滤机制,结合DIS中DR算法,进一步保证了系统的实时性和可靠性。仿真应用实例表明,这种设计具有较好的实用性,可以用于飞机防空作战仿真等演示验证项目。采用了基于RT-TCP/IP技术的RT-DIS系统对象交互技术,具有开发时间短、成本与性能兼顾等优点,是一项良好的小型实时分布式仿真系统技术。

DIS system for small-scale distributed simulation system has well performance and low cost. Based on RT TCP/IP network environment, a DIS system object interaction mechanism is designed. According to the characteristics of RT TCP/IP environment, the object interaction PDU has been redesigned, for network transmission delays inherent in, the time stamp mechanism and DR compensation model are used for amending the delay; and learning from HLA_RTI in data management on a number of ideas, a data filtering mechanism is designed, combining with DIS in DR algorithm, the system＇ s real-time performance and reliability are fu/ther guaranteed. Simulation examples show that this design has better practicality, and can be used for aircraft and air defense operations, such as demonstration projects simulation. Using RT-DIS system objects interactive technologies based on RT-TCP/IP technology, is has short development time, and advantages of compromising with cost on performance. It is a good small-scale real-time distributed simulation system technology.