摘要
以地心地固坐标与椭球面坐标转化关系的微分方程为基础,结合基线解算得到的坐标分量方差-协方差矩阵,推导了用于CORS站点坐标分量时间序列小波滤波的软阈值公式,并用于天津CORS站点的坐标时间序列滤波处理,滤波结果表明该软阈值的设定方式可较好的去坐标时间序列中的高频噪声。
The soft-threshold used for time serials wavelet filter of CORS stations coordinates＇ Analysis is deduced in this article,which based on two facts：one is the mathematic differential function of the transformation between the Earth Center Earth Fixed（ECEF）coordinates and the ellipsoid coordinates,and the other is the vector variance-covariance of the CORS stations GPS baseline solutions.This method is validated by wavelet filtering of Tianjin CORS stations coordinates＇ time serials,and is proved effective to decrease the high frequent noise.
出处
《城市勘测》
2011年第6期89-91,共3页
Urban Geotechnical Investigation & Surveying
