虚拟战场地理信息系统数据模型

The spatiotemporal geographic data models in virtual battlefield environment GIS

虚拟GIS数据模型是战场环境GIS最基本问题。本文在考虑到战场虚拟GIS表达地学虚拟环境中的各种数据的需要的同时,借鉴当前GIS数据模型最新进展,以及虚拟现实和仿真领域的相关数据模型,设计了一个新的面向对象虚拟GIS数据模型(OOVRGDM)。面向对象虚拟GIS数据模型(OOVRGDM)的最大特点是通过引入结构对象,同时支持地学虚拟环境的数据表达和地学虚拟环境图形生成的需要。OOVRGDM能同时表达二维空间地学数据和三维空间中的地学数据,并提供离散地理对象和战场地理对象的表达能力。

The spatiotemporal geographic data models is the most basic problem in Virtual Battlefield Environment GIS.This text designs an object-oriented virtual reality geo-data model ,considering the late progress of GIS data model and the related data model of the virtual reality,while thinking about the various need of the VR data in VR environment.The biggest characteristics of OOVRGDM is to introduce structure object into it,and support the need of the environment's express and the graphics display of datum simultaneously.OOVRGDM can alse express the spatiotemporal data of 2D space and 3D space,and provide the expression ability of the discrete geography object and battlefield environment object.