山西陆态网络坐标时间序列噪声及速度场分析

Noise and Velocity Field Analysis of Shanxi CMONOC Coordinate Time Series

利用Hector软件解算山西地区10个陆态网络连续站2010-11~2021-01的观测数据,得到连续站坐标残差时间序列,并确定最优噪声模型及修正后的速度场。结果表明,山西地区坐标时间序列数据中主要存在白噪声(WN)、闪烁噪声(FN)和幂律噪声(PL);N方向的最优噪声模型为WN+PL;E和U方向的最优噪声模型均为WN+FN。在顾及有色噪声的影响下,山西省陆态网络基于ITRF2014框架下的水平方向平均运动速率为33.542 mm/a,运动方向为SEE 26°22′12″;垂直方向的平均运动速率为2.214 mm/a,整体呈隆升趋势。

We use Hector software to calculate the observation data of 10 continuous stations of CMONOC of Shanxi province from 2010-11 to 2021-01.We obtain the coordinate time series of the continuous stations,and determine the optimal noise model and the corrected velocity field.The results show that:white noise(WN),flicker noise(FN)and power-law noise(PL)mainly exist in the Shanxi coordinate time series data;the optimal noise model in the North direction is WN+PL;the optimal noise model in the east and up directions are WN+FN.Taking into account the influence of colored noise,the average moving speed in the horizontal direction of CMONOC in Shanxi based on the ITRF2014 framework is 33.542 mm/a,and the moving direction is SEE 26°22′12″.The average movement speed in the vertical direction is 2.214 mm/a,showing an uplift trend.