GPS大坝变形监测网数据处理模型

考虑到GPS大坝变形监测网的特殊性，提出了以站心地平坐标系为参考坐标系的GPS大坝三维变形监测网的数据处理模型；提出了应用模糊数学中的聚类分析方法对拟稳点（或固定基准点）的相对稳定性进行检验的数学模型；提出了平差采用拟稳平差的方法．用VB语言开发了GPS大坝三维变形监测网的数据处理软件系统，并对某大坝GPS变形监测网的三期观测数据进行了平差计算，其结果表明，所提出的数学模型更适合于GPS大坝变形监测网的数据处理．

Data Processing Model of GPS Dam Deformation Monitoring Network

In view of the particularity of the global positioning system(GPS) dam deformation monitoring network,a data processing model based on the station orthogonal coordinate system for three-dimension GPS dam deformation monitoring network is put forward.The paper also presents a mathematical model based on the clustering analysis method in fuzzy mathematics to test the relative stability of quasi-stable points(or datum points).The adjustment method during the course of data processing is quasi-stable adjustment.A software system of three-dimension GPS dam deformation monitoring network is designed and developed with the help of Visual Basic Language.With three periods' observation data from the GPS deformation monitoring network of a dam,an adjustment calculation is conducted by the software.The calculation result shows that the mathematical models can be more suitable for the data processing in GPS dam deformation monitoring network.