顾及负荷效应的GPS测站噪声异方差模型构建

Construction of GPS Station Noise Heteroskedastic Model Based on Load Effect

为定量评估负荷效应可能引起的GPS站坐标时间序列噪声,提出一种描述噪声时间相关和异方差特性的时序噪声建模方法。结果表明,本文构建的噪声模型优于FN+WN和AR噪声模型,能有效量化白噪声的异方差特性,可定量描述负荷修正前后噪声含量的变化趋势。

To quantitatively evaluate the time series noise of GPS station coordinates that may be caused by load effects,we propose a temporal noise modeling method to describe the temporal correlation and heteroscedastic properties of noise.The results show that the proposed noise model is superior to FN+WN and AR noise models and can effectively quantify the heteroscedastic characteristics of white noise and quantitatively describe the variation trend of noise content before and after load correction.