Multiple Platforms Information Interaction Distributed Simulation And Visual Simulation System Based On HLA

Distributed simulation and virtual reality technologies are the main domain in simulation research. High level architecture (HLA), as a new generation of the distributed simulation architecture, mainly solves the problems of inter-operation, reusing and HLA is future direction of the distributed simulation. The virtual reality technology not only gives a visual scene but also lets person interact with the virtual scene.The background of the paper is the basic research on Semi-Physical distributed simulation system development. The technology of distributed simulation based on HLA is the core of the simulation system; it connects all simulation nodes to build a whole simulation environment. The technology of virtual reality develops the scene simulation for the system nodes. The paper adopts the double-thread programming method to combine the two types of simulations rather than in only one thread like most method. This double-thread program structure diminishes the influence between the two simulations.The paper mainly researches the development of the multiple platforms distributed simulation system, development federation model, making the mathematic model for simulation platform. On the simulation nodes, the paper focuses on managing state information of entity, interacting data, mapping FOM (Federation Object Model), synchronizing control and generating 2D trajectory for target tracking and other key modules.The paper develops the scene simulation, the infrared and radar sensors simulation based on Vega development tool. At last the paper represents the record of demonstrating the simulation system and draws a conclusion that the simulation system has good performance on interaction between the multiple platforms and scene visual simulation. It's convenient for the system to expend, to reuse and to inter-operate with other simulation platforms.