城市GPS控制网工程研究

Study on urban GPS network

通过应用GPS技术改造城市基本控制网工程实例,在控制点的布设、网型结构、精度统计、成果与原城市控制成果的一致性等方面进行了实验研究,提出了科学实用的工程技术方案;在水准高程与GPS拟合高程和RTK高程成果进行对比分析的基础上,认为GPS拟合高程和RTK高程成果不能作为城市基本高程控制网成果使用,需要单独布设水准网。

A practical and scientific scheme of engineering and technology is put forward that made from the experiments in control points layout, network restructure, precision statistics and the consistency of the result with the original one of urban controlling, by means of the urban controlling network reform. Based on the analysis and contrast of the elevation results in leveling, GPS fitting and RTK, a conclusion is put out that GPS fitting elevation and RTK elevation can not be used as the urban general elevation control results and the leveling network is needed to be run independently.