Experiment Results and Analysis of the Dynamic Deformation Monitoring of a Kind of Landslide Based on GPS Technology

Some monitoring points were set on the landslide body and GPS single epoch positioning and RTK methods were used to monitor the landslide with real time combined the big physics model experiment of one kind of landslide.Through the processing and analysis on monitoring data of the landslide from start slipping to breaking down and the contrast of monitoring results of GPS and total station,it is detected that the precision on plane and height of GPS single epoch positioning based on Track is about 5 mm and 9 mm,the precision of RTK is about 11mm and 17mm when the observation conditions are favorable and the baseline is short,and the results after filtered by wavelet transformation or other methods are more higher.At the same time,the experiment data are also displayed that the mean differences of monitoring results obtained by GPS single epoch positioning and RTK on the same epoch are 5mm and 11mm respectively in the direction of plane and height.Those phenomena showed that the monitoring results of GPS single epoch positioning and RTK are accordant preferably,and they all can be used to monitor the dynamic and real time deformation of this kind landslide.The key parameters obtained by this experiment can provide important technique references for the study on deformation monitoring and forecast of this kind landslide.