GPS大坝变形监测网数据处理模型

Data Processing Model of GPS Dam Deformation Monitoring Network

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.

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 threedimension GPS clam 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.