In this paper, we introduce the establishment of the foundational control network in Nanjing and the course of getting the 3-dimensional coordinates by the RTK of GPS in real-time and quickly. The network is established by the technique of precise leveling surveying and GPS positioning technique. Then we analyze and discuss the problems of the process. At last, we present the corresponding methods.
【更新日期】
2005-08-19
【分类号】
P228.4
【正文快照】
1 概 述随着城市建设的发展,迫切需要建立一套高精度的城市三维基础控制网,以满足各项建设的需要和坐标系统之间的套合,进一步用于城市建立综合地理信息库、获取地籍变更信息、精密工程施工、三维形变监测等工程项目。南京市国土资源信息中心。在国家空间坐标基准框架(国家 B