JLCORS网络参考站坐标时间序列噪声类型分析
发布时间：2018-11-16 09:05
【摘要】：利用吉林省连续运行参考站网络(JLCORS)近3年的观测资料,使用GAMIT/GLOBK软件进行后处理,解算时用吉林省周边IGS及陆态网络站点作为控制点,获得41个站单日松弛解的坐标时间序列。用最大似然法拟合经典的噪声模型,根据噪声模型是否能够取得似然函数的最大值,获得不同噪声模型及其组合的参数估计。结果表明,JLCORS全部参考站坐标时间序列噪声含有幂律噪声及白噪声,可用二者的组合噪声模型来描述,不含带通滤波噪声及各阶高斯-马尔科夫噪声。幂律噪声模型部分的谱指数集中分布在-2附近,表明幂律噪声的特例随机游走噪声占有主导地位。
[Abstract]:Using the observation data of Jilin Province continuous operation reference station network (JLCORS) for nearly 3 years, using the GAMIT/GLOBK software to carry on post processing, the solution uses the IGS and the land state network station around Jilin Province as the control point. The coordinate time series of 41 stations single day relaxation solution is obtained. The classical noise model is fitted with the maximum likelihood method, and the parameter estimates of different noise models and their combinations are obtained according to whether the noise model can obtain the maximum likelihood function. The results show that all JLCORS reference station coordinate time series noises contain power law noise and white noise, which can be described by their combined noise model, without band-pass filtering noise and Gao Si Markov noise of every order. The spectral exponent of the power law noise model is distributed in the vicinity of -2, which indicates that the random walk noise of the power law noise is dominant.
【作者单位】： 吉林大学地球探测科学与技术学院;吉林省地震局;北京麦格天宝科技股份有限公司;
【基金】：地震科技星火计划(XH14016Y)
【分类号】：P228.4
，
本文编号：2335097
[Abstract]:Using the observation data of Jilin Province continuous operation reference station network (JLCORS) for nearly 3 years, using the GAMIT/GLOBK software to carry on post processing, the solution uses the IGS and the land state network station around Jilin Province as the control point. The coordinate time series of 41 stations single day relaxation solution is obtained. The classical noise model is fitted with the maximum likelihood method, and the parameter estimates of different noise models and their combinations are obtained according to whether the noise model can obtain the maximum likelihood function. The results show that all JLCORS reference station coordinate time series noises contain power law noise and white noise, which can be described by their combined noise model, without band-pass filtering noise and Gao Si Markov noise of every order. The spectral exponent of the power law noise model is distributed in the vicinity of -2, which indicates that the random walk noise of the power law noise is dominant.
【作者单位】： 吉林大学地球探测科学与技术学院;吉林省地震局;北京麦格天宝科技股份有限公司;
【基金】：地震科技星火计划(XH14016Y)
【分类号】：P228.4
，
本文编号：2335097
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