摘要
地区性形变仪器误差等造成的共性误差是影响基准站坐标和速度解算的主要因素，主成分分析法结合Karhunen-Loeve展开法可对基准站坐标时间序列进行空间滤波，有效提取共性误差。本文对国内29个基准站1999年至2012年的坐标时间序列使用主成分分析法提取其中的共性误差，计算结果表明，提取共性误差后站点坐标精度和速度计算精度可得到改善。
Reference station common mode errors due to regional deformation, instrument error, etc. have a major influenceon the coordinate and velocity calculation. Coordinate time series of CORS stations are filtered with PCA and KLE methods, then common mode errors can be extracted effectively. The PCA method is used to extract the common mode errors of coordinate time series of 29 domestic reference stations from 1999 to 2012. After removing the common mode errors, both the coordinate accuracy and the calculated accuracy are improved.
出处
《测绘科学与工程》
2014年第1期17-20,共4页
Geomatics Science and Engineering
基金
国家自然科学基金资助项目（41174017,41004013,41304022）.
