大坝工作基点校测数据处理方法探究

针对以外部控制网作为首级控制对工作基点校测过程中出现的GPS测量与全站仪测量结果相差较大的现象,将大坝实测数据在多种策略下进行处理,与高精度全站仪测量结果对比分析,探寻适合大坝监测的合理GPS基线处理策略和网平差处理方法,结果表明此法使得GPS测量结果长度变形更小,与全站仪实测结果更加吻合。

Research on the Data Processing Method of Dam Base Point Survey

According to taking the external control network as a initial level control which occurs the phenomenon that GPS measurement in the process of working point calibration has big difference with that of total station measurement,the measured data of dam are processed under various strategies,which is compared with measurement result of high precision total station,seeking for reasonable GPS base line treatment strategy and network adjustment processing method suitable to dam monitoring,so we get some good conclusions that length deformation of GPS measurement result gets smaller which is in accordance with actual measurement of total station.