GPS形变监测技术在天荒坪电站水库坝区的监测网试验

就天荒坪抽水蓄能电站水库坝区的GPS试验,介绍GPS在使用单、双频机及不同观测时间段的定位精度.针对GPS在大坝滑坡监测中存在每个监测点上都需要安装GPS接收机而导致费用较高的问题,提出了GPS多天线新技术———由1台接收机连接多根天线,每个监测点上只安装GPS天线,即多个监测点共用1台接收机.此外,给出了该技术在水库坝区监测的试验结果.

Field experiments on GPS-based new technique for dam deformation monitoring

Based on the GPS experiments performed in the dam area of the Tianhuangping pumped-storage power station, an introduction was given to the positioning precision of GPS for different observation intervals with the single-?and dual-frequency devices. Meanwhile a new multiple-antenna technique was proposed, lowering the high expenditure on dam sliding monitoring due to the installation of one receiver at each monitoring point. In this technique, only GPS antennas were installed at each monitoring point with one receiver connected with several antennas, i.e. several monitoring points shared one receiver. The monitoring results with the technique in the dam area were given.