分布式虚拟现实系统的信息同步研究

The Research of Synchronization for Distributed Virtual Reality System

分布式虚拟现实技术已经开始应用于军事、航天、娱乐等多个领域，并取得了较好的效果。该文对分布式虚拟现实系统的一个关键技术──信息同步技术，进行了比较深入的分析和研究，提出了一个基于Ｐｅｔｒｉ网的信息同步模型，并提出了基于该模型的信息预取、状态估算、系统时间同步等控制策略。

The technique of distributed virtual reality has been already used in some simulating and training systems. Here, we concentrate on the synchronization a key technique for the DVR system. On the first side. we propose a synchronization model ITSPNs (Inhibit Time Stream Petri Nets). Secondly we propose some methods to make the synchronization control, such as network delay calculation, estimation for entity states, information fetch and clock synchronization.