GPS三维监测试验网的两期成果分析

Analysis of Two Phases" Results of Shanghai GPS Test Net for Monitoring Three Dimensional Deformation

通过介绍GPS三维监测试验网的第二期观测成果,对两期观测成果进行了比较分析。结果表明,两期成果的尺度没有系统偏差,而GPS基线向量的坐标轴指向存在系统偏差。只要统一各期成果的坐标轴指向后GPS将有望以毫米级精度进行三维形变监测。

the paper first introduces the second phase results of Shangahi GPS test net for monitoring three dimensional deformation. Then the 1st & 2nd phases results are compared and analysed. It shows that the results between two phases don't have systematic deviation in scale', but have systematic deviation in the orientation of GPS baseline's coordinate axis. If the orientation of GPS baseline's coordinate axis in different phases can be unified, GPS is expected to achieve millimeter accuracy in monitoring three dimensional deformation.