Spatial data model is the core and base of three dimensional geographic information system design.
空间数据模型是地理信息系统设计的核心和基础。
Global Positioning system (GPS) is a radio navigation system which provides free users with accurate longitude, latitude and elevation of three-dimensional position information and time information.
全球定位系统(GPS)是为用户提供免费而精确的经度，纬度和海拔三维位置信息与时间信息的无线电导航系统。
In this dissertation, networked information releasing technology was applied to part design in CAD system, brought forward a new three dimensional modeling method by networked parameter drive.
本文将网络化信息发布技术应用于CAD系统的零件设计，提出了通过网络化参数驱动建立三维模型的新方法。
In the robotic visual servo system based on the position, it is need to build an image Jacobian which transforms two-dimensional image information to three-dimensional coordinate information.
在基于位置的视觉伺服中，需要建立将二维图像信息转换为三维坐标信息的图像雅可比矩阵。
The three-dimensional inquiring system was realized by information system of small watersheds built by dummy GIS.
在此基础上，应用虚拟GIS建立小流域信息系统，实现全县水土流失的三维动态查询。
The three-dimensional dynamic information management system of the coal storage in the coalmine developed with this method indicates that the method is feasible and practical.
运用该方法开发了“矿山储煤场三维动态管理信息系统”，说明了其可行性与实用性。
In this dissertation, key techniques for three-dimensional geographic information system and three-dimensional plotting system are studied.
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。
It's a core problem to organize and manage massive data in three-dimensional urban geographic information system.
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。
The three dimensional landscape reconstruction is one of the important aspects in the research of Virtual Reality Geographic Information System (VR-GIS).
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 Development and Application of Three-dimensional Geography Information System (3D GIS) in the Field of Forestry Resource Management;
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。
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