摘要
应用GPS技术测定区域形变已经成为一种主要手段 ,为了真实地测定形变 ,必须解决合理判别基准点的稳定性和参考框架的稳定性 ,以及消除位移计算中的系统差等关键问题 .为此提出用带稳健估计的空间直角坐标转换方法来确定基准点的稳定性和参考框架的稳定性 ;以两期GPS基线向量差为直接观测值 ,并顾及两期GPS监测网的坐标系统差 ,采用附加条件的间接平差法 ,直接计算GPS形变监测点的位移 .
GPS has already become a main method in regional deformation monitoring.How to determine the deformation reasonably?It is necessary to determine the base point's stability and reference frame's stability.In this paper,we discuss how to use robust estimation in rectangle transformation to determine the base point's stability and reference frame's stability and how to use the GPS vector difference to determine the point's displacement.Finally we take a practical regional deformation data as an example to illustrate our method.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第1期64-68,共5页
Journal of Tongji University:Natural Science
