欧洲地区IGS基准站坐标时间序列各分量方向最优噪声模型变化探讨

针对现有坐标时间序列研究中各分量方向间噪声特性对比研究较少,本文选取欧洲地区58个IGS基准站11年的坐标时间序列,采用不同的噪声模型组合对它们进行噪声分析并就各分量方向间的噪声特性进行对比。结果表明,各测站在NEU分量表现出不同的噪声特性,因此分析时间序列变化特征的物理解释时需对各分量区别对待;垂直分量的有色噪声、振幅等明显大于水平方向,与一般认为的垂直分量精度低于水平分量相一致。 

The Analysis on the Best Noise Model Change of the Component Direction of IGS Reference Station Coordinate Time Series in Europe

According to the fact that there is on enough research on the comparison of noise characteristics among different components, this paper focusing on the coordinate time series of 58 reference stations in Europe for 11 years, noise analysis has been implemented using different noise model combination and the noise characteristics of each component direction are compared. From these analysis, the noise characteristics in the NEU component of each station is variable, so it is necessary to treat each component differently when analysing the physical interpretation of time series variation characteristics; the coloured noise and amplitude of the vertical component are obviously larger than the horizontal direction, which is consistent with the generally considered the accuracy of the vertical component lower than the horizontal component.