日本本州岛区域共模误差对测站速度的影响  

Influence of regional common mode error on station velocity in Honshu Island,Japan

作　　者：邵振华 徐克科[1] 侯争[1] 刘吉鹏 赵付领 姚未正 朱绪林 SHAO Zhenhua;XU Keke;HOU Zheng;LIU Jipeng;ZHAO Fuling;YAO Weizheng;ZHU Xulin(School of Surveying and Land Information Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China)

机构地区：[1]河南理工大学测绘与国土信息工程学院,河南焦作454000

出　　处：《导航定位学报》2022年第4期153-160,共8页Journal of Navigation and Positioning

基　　金：国家自然科学基金项目(41774041)。

摘　　要：利用主成分分析(PCA)方法对日本地区19个测站连续6 a的全球卫星导航系统(GNSS)坐标时间序列进行分析。首先按照点位分布和质量选取有效站,由于数据存在粗差,需对其进行剔除,同时用插值的方法对缺失数据进行补齐等预处理,然后对其进行主成分分析。根据主分量的时间域特征、空间响应特征及其每一个主分量所占比例等,提取坐标时间序列的共模误差。最后估计了滤波前后的坐标时间序列的速度和周期。结果表明,滤波后能够很好地提取并剔除共模误差(CME),更有利于对淹没在误差里的信号进行分析。The Global Navigation Satellite System(GNSS)coordinate time series of 19 stations in Japan for 6 consecutive years are analyzed by Principal Component Analysis(PCA).Firstly,the effective stations are selected according to the point distribution and quality.Due to the gross error of the data,it is necessary to eliminate it.At the same time,the missing data are preprocessed by interpolation,and then the principal component analysis is carried out.The common mode error of coordinate time series is extracted according to the time domain characteristics,spatial response characteristics of principal components and the proportion of each principal component.Finally,the velocity and period of the coordinate time series before and after filtering are estimated.The results show that the Common Mode Error(CME)can be well extracted and eliminated after filtering,which is more conducive to the analysis of the signal submerged in the error.

关 键 词：全球卫星导航系统 坐标时间序列 主成分分析 共模误差 测站运动速度 

分 类 号：P228[天文地球—大地测量学与测量工程]