摘要
以GAMIT/GLOBK处理得到高精度常州CZCORS坐标时间序列,用奇异谱分析方法对其进行空间滤波,使用最大似然估计方法对剔除共性误差的坐标时间序列进行噪声特征分析,得出最优白噪声模型为"WH",N、U分量最优有色噪声模型为"WH+FN",E分量最优有色噪声模型为"WH+FN+RWN"。根据最优有色噪声模型估计出的CZCORS站速度场表现为东南方向整体运动的趋势,其整体位移变化值及运动方向与周围IGS站基本一致。
We use the singular spectrum analysis method to spatial filter with GAMIT/GLOBK pro- cessing of high precision CZCORS coordinate time series. To exclude common mode errors of coordi- nate time series, a maximum likelihood estimation method is used for noise characteristic analysis. The optimal white noise model is "WH", the optimal colored noise model of the N, U components is "WH+FN", and the optimal colored noise model of the E component is "WH+FN+RWN". Emplo- ying the optimal colored noise model to estimate the regional CORS sites velocity field, shows a south- east overall movement trend, and the overall displacement value and movement direction is similar to the surrounding IGS stations.
出处
《大地测量与地球动力学》
CSCD
北大核心
2015年第6期1001-1006,共6页
Journal of Geodesy and Geodynamics
基金
苏州北斗地基增强参考站项目
关键词
常州CORS
最大似然估计
空间滤波
奇异谱分析
噪声特征分析
Changzhou region CORS
maximum likelihood estimation
spatial filtering
singular spec-trum analysis
noise characteristics analysis