【作者】 冯晓刚；

【导师】 陈崇成；

【作者基本信息】 福州大学 ， 地图学与地理信息系统， 2006， 硕士

【摘要】 综合利用地理信息系统、虚拟现实技术、多维可视化技术构建虚拟地理环境，为林火可视化与灭火仿真研究提供了崭新的技术平台。随着分布式仿真技术发展为高层体系结构(High Level Architecture，HLA)阶段，基于高层体系结构构建分布式林火仿真系统自然成为当前分布式林火蔓延与灭火仿真的研究热点之一。本文在对森林景观及林火建模研究的基础上，基于HLA对分布式森林灭火仿真技术进行了初步的理论探讨和应用设计，利用HLA的互操作性和重用性思想和规则开发了一个通用的森林灭火仿真系统原型。 从虚拟森林景观(场景)、林火蔓延等的基本原理与方法出发，围绕分布式森林灭火仿真系统原型构建主要展开以下几个方面的工作： 1．对林火仿真与分布式交互仿真技术的国内外研究进展进行综述。在总结现有林火仿真系统的基础上，提出了基于高层体系结构(HLA)、以虚拟地理环境为基础支撑环境构建分布式虚拟森林及其灭火仿真系统的技术路线。 2．从构建森林灭火仿真系统需求的角度出发，分别论述了林火蔓延与模拟的原理与方法，以及组成虚拟森林环境必须的三维地形、森林、灭火工具等要素的构建原理与方法。 3．满足森林灭火仿真应支持多种不同要素同时参与灭火仿真的功能需求，提出了基于HLA的、可扩展的分布式森林灭火仿真体系结构。基于这种结构，仿真用户可以通过目标系统重组的方式构建具体的联邦应用系统。 4．详细设计了基于HLA的森林灭火仿真系统的联邦概念模型和联邦对象模型。在此基础上分别构建了组成森林灭火仿真系统所需的地形联邦成员、林火联邦成员、森林联邦成员及灭火工具联邦成员，并就系统设计、开发过程中的关键技术，如FOM／SOM、联邦成员框架结构、仿真运行机制等分别作了较深入研究。 5．基于上述基础，采用面向对象的思想，基于Visual C++ 6.0与RTI1.3v6开发了分布式森林灭火仿真系统原型，并实现了虚拟场景的三维动态实时生成与显示。最后结合福建省漳浦景观数据给出了一个系统演示范例。更多还原

【Abstract】 Virtual Geographic Environment (VGE) created by geographical information system, virtual reality technology, multi-dimension visualization techniques provides a new platform for the forest-fire spreading and its visualization and the fire fighting simulation. With the High Level Architecture (HLA), the lasted developed computer technology, developed from the technology of distributed interactive simulation, the distributed fire fighting simulation system becomes one of the important issues in the fire and the fire fighting simulation. With the above consideration, this thesis is intended to render a basic research on forest landscape and fire mode and present a newly-developed general Forest fire fighting simulation system (prototype), which maximumly utilize the HLA theory and the regulation of recycling and interactive operation.The followings are the key topics of this thesis based on the principle and method of the virtual forest landscape and the forest-fire spreading:1. The advancement of related research fields is summarized detailedly in two aspects: the simulation of forest fire fighting and the technology of the distributed interactive simulation. An approach for constructing the distributed virtual forest and fire fighting system based on the Virtual Geographic Environment (VGE) and the High Level Architecture (HLA) is presented.2 This thesis, from the angle of the demand of constructing the forest fire fighting system, not only researches the the principle and the method of constructing the forest fire spreading model and the fire fighting simulation and the elements of the Virtual forest environment, but also the three-dimension, virtual forest, the tool for fire fighting.3. This thesis, in order to meet the requirements of performing simulation tests on multiple scenarios, proposes a forest fire fighting simulation system based on the High Level Architecture. With this system, users can rebuild the application of federation system by reforming the target system.4. The conceptual model of the forest fire fighting simulation system and the federation object model based on the HLA are designed. Then the basic federation which includes the terrain federation, forest fire federation, forest federation and tool federation is constructed. The key techniques, such as FOM/SOM design, federate framework design, the run mechanism of simulation, are also studied in the process of constructing of the system.5. Forest fire fighting software is designed and developed on the basis of what this thesis更多还原