【摘要】 1∶5 0 0 0 0量级的基础地理信息是我国最重要和最基本的基础空间数据集 ,对我国的各方面的发展都有着不可忽视的作用。交通道路的测量和数据采集是建立 1∶5 0 0 0 0基础空间数据库的关键之一。将GPS应用于交通道路的测量 ,可以充分发挥GPS全球性、全天候、高精度、三维定位等优点 ,快速实现交通道路的测量和相关数据采集。通过研究和现场试验证明 ,采用差分GPS技术不仅可行 ,而且有着其它方法无法比拟的优点。更多还原

【Abstract】 Basic Geographical Information Database is one of the most important basic space databases, which is significant to all aspects of the national development. Measurement and data sampling of the roads are key techniques for establishing the specific database. GPS (Global Positioning System), which has the advantages of worldwide use all day around, high precision and 3D positioning, can be used to accomplish the measurement and data sampling quickly. The differential GPS technique proves applicable and more advantageous by theoretical study and on line experiments.更多还原