本文提出了三维地理信息系统中几何特征的误差模型。
This paper presents the error models developed for handling geometric features in three dimensional Geographical Information Systems.
人们长久被压抑的对三维地理信息系统的需求被释放出来。
Then people's long time limited need for 3D geography system is released.
用计算机实现三维地理信息系统已成为了当前的研究热点。
Electronic 3d geography system is one of the most popular research issues.
三维复杂场景管理是三维地理信息系统、三维景观系统、拟现实的基础和核心。
Management of complex three-dimensional scene is the basis of3 DGIS, three-dimensional landscape system and virtual reality.
三维复杂场景管理是三维地理信息系统、三维景观系统、拟现实的基础和核心。
The Development and Application of Three-dimensional Geography Information System (3D GIS) in the Field of Forestry Resource Management;
三维空间中地质界面的直接交互式操作是三维地理信息系统研究的一个热点问题。
The study for interactive operation of three-dimensional Geological Model is one of the most important research fields in 3D GIS.
三维真实感的图形技术是科学计算可视化、电脑动画和三维地理信息系统的核心。
The graphic technology of 3d verity is the core of visualization in calculation, computer animation and 3d GIS.
本论文对三维地理信息系统及在其基础上建立的三维态势标绘系统的关键技术进行了研究。
In this dissertation, key techniques for three-dimensional geographic information system and three-dimensional plotting system are studied.
如何有效地组织和管理城市三维地理信息系统中海量级的三维数据是目前研究的一个核心问题。
It's a core problem to organize and manage massive data in three-dimensional urban geographic information system.
本文在这样的背景下旨在研究三维地理信息系统在森林资源管理中的应用，探索了一种崭新的技术手段。
Under this background, the article aims to study the application of 3d GIS in the field of forestry resource management and has explored a new kind of technological method.
在三维地理信息系统的开发与研究中，要求三角网模型的支持，而高效的三角网生成算法是三角网模型的基础。
The support of TIN model is required in the development and research of 3d GIS, while an efficient TIN algorithm is the foundation of the TIN model.
基于遥感数据的三维重建技术是当前数字摄影测量、遥感和地理信息系统等领域的重要研究方向。
The research on 3d reconstruction based on remote sensing data has become one of the focuses in the field of Digital Photogrammetry, remote sensing and Geographic Information System.
三维地形虚拟现实技术是当前计算机图形学、地理信息系统和数字摄影测量技术研究的热点问题。
The study on 3 D Terrain VR is a hot topic in Computer Graphic, Geographic Information System and Digital Photogrammetry.
三维景观重建是虚拟现实地理信息系统(VR GIS)研究中的重要方向之一。
The three dimensional landscape reconstruction is one of the important aspects in the research of Virtual Reality Geographic Information System (VR-GIS).
摘 要：三维地形模拟一直是虚拟现实、地理信息系统（GIS）等领域的研究热点。
Absrtact: 3D terrain simulation is always a hot topic in geographic information system(GIS), virtual reality and so on.
构造城市实物模型是三维城市地理信息系统(3dUGIS)应该解决的关键问题。
Building practicality model of city spatial objects is a key question which should be solved in 3d UGIS.
本文提出了三维灰色地理信息系统（3DGGIS）理论，从基础存储层、技术支撑层和专题决策层等方面详细论述了研究内容。
The author gives the research hierarchy of 3DGGIS and dwells on the contents of basic model lever, middle technical lever and high thematic lever.
地理信息三维可视化系统的研究是地理信息系统研究中的热点，也是许多应用领域对地理信息系统的基本要求。
The research on 3d visualization system of geographic information is a hotspot in the research of GIS and it is the basic requirement in many application fields.
应用虚拟现实地理信息系统(VRGIS)技术建立水土流失三维仿真系统，提供水土流失动态信息。
Based on VRGIS technology, 3d virtual simulation system of soil erosion is build, which offers the dynamic information of soil and water erosion accurately.
三维地形场景实时绘制在虚拟现实、地理信息系统、仿真系统等领域中占有十分重要的地位。
The rendering of 3D terrain scene is playing a key role in many research fields such as virtual reality, geographic information system and simulation system, etc.
将三维可视地理信息系统应用于电厂的设计与管理中，有利于提高电厂设备及其信息的可视化程度和管理的智能化水平。
Application of 3d visualization GIS in power plant design and management may improve the visibility of power plant equipment and its attribute information and the intelligent level of management.
将变密度三维海水入侵模型(SUTRA模型)与地理信息系统(GIS)进行有机集成开发出可视化海水入侵数值模拟系统。
A visualized numerical modeling system is developed on the basis of the 3-d seawater intrusion numerical model (SUTRA) integrated in GIS platform.
网络是实现数据共享最为有效的手段，构建以网络为基础的地理信息系统并实现三维可视化，对于实现数据共享、景观再现、辅助决策支持有着重要意义。
Network is the most efficient way to share the data. It's significant to build a system with the WebGIS and 3d (three dimension) viewer function for the management.
根据地理信息系统中路径设计的需要，对已有的三维路径设计方法进行了概括，提出了两种三维路径生成法概念，并对其做了简单的比较。
This paper sums up two design methods of3D path and puts forward two concepts of design method of3D path for the need of path designing in GIS, and briefly introduces the differences of two methods.
构造城市实物模型是三维城市地理信息系统(3dUGIS)解决的关键问题之一。
Building practicality model of city spatial objects is a key question which should be solved in 3d UGIS.
空间分析技术及三维可视化实现是计算机图形学、遥感、虚拟现实、特别是地理信息系统(GIS)等领域研究的重要问题。
Spatial Analysis technology and its Visualization is an important research problem in computer graphic, RS (Remote Control), VR (Virtual Reality) and GIS and so on.
地形景观模型的三维可视化技术是时空一体化地理信息系统与虚拟现实中的关键技术。
The technique of 3d visualization of terrain sight model is an important technique of spatial-temporal GIS and VR.
地形景观模型的三维可视化技术是时空一体化地理信息系统与虚拟现实中的关键技术。
The technique of 3d visualization of terrain sight model is an important technique of spatial-temporal GIS and VR.
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