基于HLA仿真系统的实时性改进策略研究

HLA以其在可重用、互操作方面的强大优势得到学术界、工业界一致认可，而成为国际分布仿真的通用标准。但HLA／RTI在实时性方面的不足多少让人感到美中不足。文章研究了国内外几种RTI版本的网络数据的时延特性，总结了提高HLA／RTI实时性能的几种常用途径。在深入分析了RTI实时性能影响因素的基础上提出一种新的改进策略，该策略从仿真应用开发者的角度出发，设置管理节点对系统各个节点时间的同步推进进行协调。实验和应用结果证明，该策略简单有效，在一定范围内能较好地解决基于HLA仿真系统的实时性问题。

Research on Strategy to Improve Real-time Performance of HLA-based Simulation System

HLA has been accepted in the field of simulations and has become the common standard of international Distributed Interactive Simulation for its superiority in reusability and interoperability, but HLA/RTI has shortages in real- time simulation. The time-delay performance of several RTIs and the common methods to improve the real-time performance of HLA-based simulation system are studied firstly. Then a new approach is brought forward from the view of the simulation application system developer based on the analysis of principal influencing factors of the real-time performance of HLA-RTI, which sets a management node to manage the synchronization of each node in the simulation system. The approach is proved to be a simple and efficient method to solve the problem of the shortage in HLA-based real-time simulation system in a certain extent by experiments and usage.