基于RT-TCP/IP的DIS系统对象交互研究

摘要

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 trans- mission 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 de-signed, combining with DIS in DR algorithm, the system' s real-time performance anti reliability are further 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 tech-nologies 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.%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.