Research on spatial data service system based on HLA

Spacial data is the foundation of the distributed virtual environment system, and it´s also a very important part of the distributed simulation. Based on the high level of architecture (HLA), the spatial data service technique is introduced into the distributed simulation system, the mode of the spatial data service and the construction frame of spatial data service system are proposed, the functions of every component module and several key technologies of its realization are introduced in detail. The experiment shows that the system could provide real-time and reliable spatial data service for distributed simulation, and has some application value.