GPS形变监测网起算点坐标对水平形变的影响  

INFLUENCE OF ERRORS IN THE COORDINATES OF THE FIXED STATION IN GPS NETWORK FOR MONITORING CRUSTAL DEFORMATION ON HORIZONTAL DEFORMATION

作　　者：顾国华[1] 孙惠娟[2] 孙汉荣[2] 

机构地区：[1]中国地震局分析预报中心 [2]中国地震局第一地形变监测中心

出　　处：《地壳形变与地震》1999年第1期43-48,共6页Crustal Deformation and Earthquake

基　　金：中国地震局地震科学联合基金;人事部留学回国人员科技活动经费

摘　　要：利用首都圈ＧＰＳ形变监测网的资料，用伯尔尼软件计算并分析了大规模ＧＰＳ地形变监测网中起算点坐标误差对水平形变计算结果的影响，给出了３种典型图形。利用速率动态平差结果，分析了不同固定点的情况下，ＧＰＳ形变监测网的点位位移中误差的分布特点。In this paper the influence of errors in the coordinates of the fixed station in the GPS network for monitoring crustal deformation on the horizontal deformation is discussed based on the data from the GPS network for monitoring crustal deformation in the area around Beijing processed with the Bernese software. Three basic patterns of the influence are given. The influence of errors in the coordinates of the fixed station on the vertical deformation is small in comparison to the errors and is not discussed in the paper. In the cases where different fixed stations are used, the characteristics of the distributions of standard deviations of the displacement components are analysed with the results from the dynamic adjustments of velocity model. The results in this paper may be useful for analysing crustal deformation data from GPS surveys.

关 键 词：GPS 水平形变 数据处理 误差 形变监测网 坐标 

分 类 号：P551[天文地球—构造地质学]