RTI时间管理的一种新型动态尺度标注算法

New dynamic scale labeling algorithm in RTI time management

时间管理算法是决定RTI时间管理服务性能的关键。为解决时间管理中常用的Frederick算法计算GALT(greatest available logical time)时可能出现死锁以及仿真系统消息延迟等问题,定义了联邦成员尺度的概念,并结合时间前瞻量的动态调整思想,提出了动态尺度标注算法,并对其进行了分析。分析表明该算法不但减少了消息的延迟时间,还解决了时间管理中的死锁问题。通过在制导弹药飞行视景仿真系统上测试,表明算法改善了仿真效果,提高了仿真系统性能。

Time managing algorithm is an importantly sticking point to assure the service of time management.To solve the problems of accidental deadlock while calculating GALT in Frederick algorithm and message delay in the simulation system,this paper defined a new concept of federator scale and used the dynamic lookahead adjusting method,gave out and analyed the dynamic scale labeling algorithm.The analysis result shows that the dynamic scale labeling algorithm not only reduces the message delaying time but also solves the accidental deadlock problem in time management.The algorithm had been tested on the guided projectile navigation scene simulation system.The result indicates that the dynamic scale labeling algorithm improves both the effectiveness and capabilities of the simulation system.