CORS-RTK远程变形监测适用性分析

Applicability analyses for CORS-RTK remote deformation monitoring

为了探明CORS-RTK实际测量精度以及用于变形监测的可行性与适用范围,分不同时段不同地点进行了CORS-RTK重复位移测量试验。通过平滑滤波去除时间序列中的高频噪声,以各历元与所有历元的均值之差计算中误差,分析了CORS-RTK测量精度及其用于远程变形监测的适用性。研究结果表明,在良好观测条件下,CORS-RTK平面测量精度为5~10mm,高程测量精度为10-30mm;且观测精度与观测时段之间相关性不显著;CORS-RTK测量方式可用于cm级精度要求的实时变形监测领域。

In order to assess the measurement accuracy of CORS-RTK and prove the feasibility and applicability of its application in the deformation monitoring,some CORS-RTK measurements are experimented in different time and different places.Measurements noises in the time series are smoothed by filtering.Mean square errors are computed through the difference between every epoch and their mean value.CORS-RTK measuring accuracy is evaluated and its applicability for remote deformation monitoring is analyzed.The experiments show that,in favorable CORS-RTK measuring condition,the plane measurement MSE is 5~10mm and the height measurement MSE is 10~30mm.The measurement accuracy is not dependent on the measuring time obviously.CORS-RTK can be used in the deformation monitoring with cm level accuracy.