DIS/HLA转换器的研究与开发

Research and Development of the Translator between DIS and HLA

分布交互仿真的发展经历了从最早的SimNet到DIS以及目前的HLA等多种体系结构,采用HLA结构是目前分布交互仿真发展的趋势。但是目前还存在许多基于DIS的仿真系统,为了能够利用这些已有的仿真资源,有必要使这些DIS系统能够与基于HLA的分布交互仿真系统相连接。因此需要研究DIS/HLA之间的转换和互联技术。该文分析了几种常用的DIS/HLA转换技术方案,指出对于一个具体的DIS与HLA互联问题,采用转换器的方案是比较容易实现的,给出了相关的开发思路和程序实现,并对所开发的转换器的延时特性进行了测试。开发和应用表明采用转换器不需要对原有的DIS系统进行修改,具有使用方便且容易实现的特点。

Development of distributed interactive simulation has seen the initial status of SimNet, DIS and currently HLA, and the support of HLA has been the trend of distributed interactive simulations. But, there have been many simulation systems based on DIS. In order to make use of those existing DIS simulation resources, it is necessary to integrate those DIS - based simulation systems with HLA - based ones. Through analyzing different kind of techniques of connecting DIS with HLA or converting DIS to HLA, such as translator (gateway) , protocol interface unit, wrapper, native and so on, we come to a conclusion that translator is an easy - implemented method to a specific problem of the connection between HLA system and DIS system. The basic idea of developing such a translator as well as the program flow chart are given in the paper. The network latency of translator is tested to show that it can meet the requirement of whole system. Research and development show that using translator does not need modification to the existing DIS system, and is very easy to be realized in program.