数字地球

从地理学自身、GIS技术和“数字地球”战略三方面分析了地学信息图谱发展的背景。

Firstly , the background of the methodology is summarized from requirements of geography , GIS technique and Strategy of " Digital Globe " .

遥感图像中的自动目标识别与标绘技术现在已广泛应用于环境监测、军事侦察、农业估产、灾害控制等方面，也是未来地理信息系统（GIS）、数字地球、数字城市构想的关键技术。

Automatic target recognition and mapping techniques are widely used in environment monitoring , military detective , agricultural estimation , and disaster control . They will be the key techniques of future GIS , digital globe , digital city system .

数字地球中地图学与GIS的地位与作用

Position and Effect of Cartology and GIS in Digital Earth

大型GIS与数字地球的空间数学基础研究

Research on System Space Mathematical Base of Large-scale GIS and the Digital Earth

随着数字地球的出现，三维GIS发展迅速。

With the emergence of Digital Earth , three-dimensional GIS is developing rapidly .

数字地球时代GIS的发展

GIS Development in the Epoch of Digital Earth

GPS在数字地球中的应用

The application of GPS in the digital earth

三维GIS作为数字地球的解决方案之一，理论和技术发展日臻完善。

Three-dimensional GIS is improving in theoretical and technological as one of the solutions in Digital Earth .

美国副总统戈尔于1998年1月31日提出了数字地球的概念（Core，A.1998），这主要是由美国的国家目标和全球战略决定的。

In 1998 , America 's vice president put forward the concept digital earth because of America 's nation targets and global stratagem .

基于VRML的数字地球系统的架构方案

A scheme to construct digital earth system based on VRML

全球信息化步伐的加快，特别是数字地球的提出，更进一步推动了作为其技术支撑的GIS技术的发展。

With the rapid development of global information , especially the advance of " digital earth ", GIS is further promoted as its technologic support .

从数字地球系统看3S技术

New Angle of View on the 3S Technology Development : Based on Digital Earth System

近年来，数字地球、虚拟现实、计算机网络等前沿技术为GIS提供了新的机遇和挑战。

In recent years , some advancing technologies , such as digital earth ? virtual reality and the Internet , have provided opportunities and challenges for GIS .

它在计算几何中是一种经典的结构，在CAD、GIS、数字地球等方面都有广泛的应用。

It is a classic structure in computational geometry , and is used in many aspects such as CAD , GIS and digital earth and so on .

空间信息移动服务模式是数字地球平台服务模式的补充，弥补了数字地球平台（G端）移动性不强的弱点。

The Spatial Information Mobile Services Mode is the supplement of the Digital Earth Platform Mode , which extends the application area of G / S Model .

伴随着数字地球与数字城市的建设，UGIS（UrbanGeographicalInformationSystem）即城市地理信息系统的发展也如火如荼。

With the construction of ' digital earth ' and ' digital city ' , the development of UGIS ( Urban Geographical Information System ) is like a raging fire .

随着数字地球的提出以及地理信息系统（GIS）技术、网络技术的飞速发展，数字校园的建设有了显著的成果。

Going with the advancing of the digital earth and the development of GIS technology and network technology , the achievement is outstanding in the construction of digital campus .

为此，有必要提出一种新的选线方法，利用现有的GoogleEarth等数字地球技术，解决线路设计中地形资料获取等问题。

Therefore , it is necessary to put forward a new method for highway location , which uses the existing Digital Earth technology & Google Earth to obtain terrain data .

随着“数字地球”、“数字城市”等应用的发展，GIS数据的可视化效果已经成为评价GIS性能的一个重要方面。

With the development of the applications of Digital Earth and Digital City , the visualization effect of GIS data is becoming an important aspect to evaluate the performance of GIS .

研究原生GML空间数据库系统与数字地球原型系统的应用集成。

The integrating application of Native GML Spatial Database System and digital earth prototype system is researched .

近年来，数字地球及数字城市建设越来越受到各国的重视，三维地理信息系统（3DGIS）作为核心技术得到了快速的发展，并成为数字地球和数字城市领域的研究热点及重点之一。

As the core technology , three-dimension Geographic Information System ( 3D GIS ) also developed rapidly and become a hot research filed of " Digital Earth " and " Digital City " .

再次，由于建立数字地球需要用到大量矢量格式的图像，而遥感卫星图像是栅格格式，因此本文提出了一种将栅格图像转换为标准的ShapeFile格式矢量文件的方法。

Secondly , to build the digit earth , people need many vectorial images . Remote sensing images are grid images , so this paper presents a algorithm to convert grid images to standard Shape File format vector files .

网络模型采用基于Client/Server结构的ActiveX构件方案，既满足数字地球的建模特性，又支持标准的WWW浏览器。

Client / Server based ActiveX network model not only meets specific needs for geo data modeling , but also well supports WWW browsers .

本文以两大主流数字地球平台GoogleEarth和WorldWind为例，对各自的功能和特色进行研究及对比，并对这两大主流数字地球平台的应用进行扩展。

This paper takes Google Earth and World Wind the two major mainstream digital earth platform as examples to study and compare the respective features and functions , and expands the application of the two mainstream digital earth platforms .

DEM用途广泛，数字地球、数字城市、数字区调等工作以及虚拟现实三维可视化都需要高精度的DEM支撑。

It is applied widely , Digital Earth , Digital City , Digital Regional Geological Survey and 3D virtual images are all based on high precision DEM .

根据地学浏览器终端的形式，G/S模式可划分为基于PC端的数字地球平台服务模式和基于移动终端的空间信息移动服务模式两种具体表现形式。

According to the form of geo-information browser , the model of G / S can be divided into the Digital Earth Platform Mode PC-based and the Spatial Information Mobile Services Mode based on mobile terminals .

在计算机技术蓬勃发展的时期，空间数据库在计算机视觉、图像识别、环境保护、计算几何、地理信息系统（GIS）以及数字地球等领域被广泛地应用。

With the rapid development of computer technology , spatial database is widely used in areas of computer vision , image recognition , environmental protection , computational geometry , geographic information systems ( GIS ) and digital earth .

三维城市模型是城市地理信息系统（UGIS）研究的一个重要方向，也是近年来提出的数字地球的一个重要部分，已引起地理信息系统（GIS）学术界和应用部门的广泛关注。

3D city model is a important aspect of UGIS and an important part of Digital Earth which aroused GIS academe and application department concern widely .

作为数字地球的一部分，三维景观系统构建的研究涉及面非常广泛，包括了3S（GIS、GPS、RS）、多媒体、网络、虚拟仿真等技术。

As part of the digital earth , 3D landscape system involves very extensive techniques , ranging from 3S ( GIS , GPS , RS ), multimedia , networks and virtual reality to simulation technology .

空间信息工程是指利用“数字地球”理论，基于3S等关键技术，深度开发和利用空间信息，建设服务于北京市规划、建设、管理；

Spatial Information Engineering is to develop and use spatial information , to construct information infrastructure and information system with the digital earth theory and 3S technologies supported .