The followings are what we have done in this dissertation:1. Design a Pyramid Model for global multi-resolution virtual terrain environment, and then implement this model by way of MRLOD.
提出用金字塔模型解决全球虚拟地形环境的多分辨率问题，并结合MRLOD技术设计并实现了一个全球金字塔模型。
The increasing application demand of distributed virtual GIS in terrain landscape and military has made real-time interactive browsing massive terrain data in large areas under network environment.
随着分布式虚拟GIS在仿真和军事中的应用需求，大范围，海量地形数据在网络环境下实时绘制技术成为GIS研究的重点之一。
This simulation platform provides a terrain Builder to create lunar terrain modules, and an environment Editor to utilize these modules to create and edit virtual lunar environment.
该仿真平台提供了用于创建地形模块的地形组件编辑器，并提供了环境编辑器以便利用预先创建的地形模块搭建虚拟月面环境。
Three-dimensional terrain is one of important factors of the natural scenes in virtual environment. It is also a significant composition of view system in virtual simulation field.
三维地形是虚拟自然环境中不可缺少的因素，也是虚拟仿真领域中视景系统的重要组成部分。
The 3D representation of Radar electromagnetic information affected by terrain, ocean and weather is a crucial problem in the future Digital Virtual Battlefield Environment (DVBE).
地形、海洋、气象等环境影响下雷达电磁信息的三维表现是未来数字化虚拟战场环境不可回避的问题。
Terrain is the carrier of Virtual Geographic Environment(VGE).
地形是虚拟地理环境的承载体。
Terrain is the carrier of Virtual Geographic Environment(VGE).
地形是虚拟地理环境的承载体。
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