基于抗差序贯平差的GPS变形监测数据处理方法  

Data Processing Method of GPS Deformation Monitoring Based on Robust Estimation for Sequential Adjustment

作　　者：张政 杨志强[1] 

机构地区：[1]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《北京测绘》2017年第01S期26-28,共3页Beijing Surveying and Mapping

摘　　要：由于在GPS动态监测中单历元解算方法在整周模糊度的固定上还不够成熟,精度不够高,当锁定的卫星数少于四颗或卫星几何图形强度不够的时,观测方程就是产生秩亏现象,本文提出了利用抗差序贯平差的方法来解算监测点坐标值,与常规单历元解算方法相比,变相增加了多余观测量,提高了精度,增加了结果的可靠性。The singleepoch algorithm is not mature enough on immobilization of ambiguity of whole cycles in GPS dynamic monitoring,its precision is not high,and it is easy to generate rank defect of adjustment observation equation when thevisible satellites less than four or satellite geometry intensity is not enough.In order to overcome these defects,the robust estimation for sequential adjustment method is proposed in this paper to calculate coordinate value of monitoring points,compared with conventional method of single epoch algorithm,this method has added the amount of redundant observation in disguised forms,improved the precision and increased the reliability of the results as well.

关 键 词：序贯平差 变形监测 单历元方法 抗差估计 

分 类 号：P258[天文地球—测绘科学与技术]