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[SCI]NOISE ANALYSIS FOR ENVIRONMENTAL LOADING EFFECT ON GPS POSITION TIME SERIES

时间:2017-04-01 来源:未知 点击:
NOISE ANALYSIS FOR ENVIRONMENTAL LOADING EFFECT ON GPS POSITION TIME SERIES

作者:He, XX (He, Xiaoxing)1,2 ] Montillet, JP (Montillet, Jean-Philippe)3 ] Hua, XH (Hua, Xianghong)1,4 ] Yu, KG (Yu, Kegen)1,4 ] ;Jiang, WP (Jiang, Weiping)5 ] Zhou, F (Zhou, Feng)6,7 ]

ACTA GEODYNAMICA ET GEOMATERIALIA

 

卷: 14

 

期: 1

 

页: 131-142

DOI: 10.13168/AGG.2016.0034

出版年: 2017


摘要

This paper focusses on the impact of environment mass loading on GPS time-series of position changes and noise characteristic. We make use of position time series of 206 GPS station ranging from 2001 to 2013 globally distributed. Firstly, we investigate the spatio-temporal pattern of mass loadings based on QLM dataset. The results show that loading effect is significant for short time series, and the instantaneous impact cannot be ignored especially in high-precision geophysical studies. Meanwhile, the results indicate that loading effect behaves with regional difference in spatial scale, and this explains why there exist significant differences on the contribution of environmental loading on GPS time series in the scientific community. Secondly, among 90 % of the stations the weighted root mean square (WRMS) is reduced after applying the loading correction based on QLM model, improving the accuracy of GPS time series. Finally, we quantify the stochastic of GPS time series. The results show that the noise model of GPS time series can be described by a various combination of those models, mainly by FN+WN model and PL+WN model. From our statistics, we can conclude that the best noise models are either white and flicker or white and power-law. Environment loading has a significant impact on the stochastic noise properties of GPS time series, on 33 %, 15 %, and 39 % of the station's noise properties (noise types) have been changed after loading correction for NEU components, respectively. Environment loading is one of the factor that 'raw' GPS time series exhibited Gauss Markov noise properties. Furthermore, the impact of environmental loading on GPS site velocity cannot be ignored; this is particularly significant for the vertical component.

作者信息

通讯作者地址: Hua, XH; Yu, KG (通讯作者)

       Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Peoples R China.
通讯作者地址: Hua, XH; Yu, KG (通讯作者)
       Wuhan Univ, Collaborat Innovat Ctr Geospatial Technol, 129 Luoyu Rd, Wuhan 430079, Peoples R China.

 

地址:

       [ 1 ] Wuhan Univ, Sch Geodesy & Geomat, 129 Luoyu Rd, Wuhan 430079, Peoples R China
       [ 2 ] East China Jiao Tong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Peoples R China
       [ 3 ] EPFL, ESPLAB, CH-2002 Neuchatel, Switzerland
       [ 4 ] Wuhan Univ, Collaborat Innovat Ctr Geospatial Technol, 129 Luoyu Rd, Wuhan 430079, Peoples R China
       [ 5 ] Wuhan Univ, GNSS Res Ctr, Wuhan 430079, Peoples R China
       [ 6 ] East China Normal Univ, 500 Dongchuan Rd, Shanghai 200241, Peoples R China
       [ 7 ] German Res Ctr Geosci GFZ, D-14473 Potsdam, Germany

 

电子邮件地址:xhhua@sgg.whu.edu.cnkgyu@sgg.whu.edu.cn

基金资助致谢
基金资助机构 授权号
National Natural Science Foundation of China 
41674005 
41574031 
41374033 
41464001 
nation science foundation for distinguished young scholars of China 
41525014 
Jiangxi Province Key Lab for Digital Land 
DLLJ201605 
出版商

ACAD SCI CZECH REPUBLIC INST ROCK STRUCTURE & MECHANICS, IRSM AS CR, V HOLESOVICKACH 41, PRAGUE 8, 182 09, CZECH REPUBLIC

类别 / 分类

研究方向:Geochemistry & Geophysics; Mining & Mineral Processing

Web of Science 类别:Geochemistry & Geophysics; Mining & Mineral Processing

文献信息

文献类型:Article

语种:English

入藏号: WOS:000395939700011

ISSN: 1214-9705

期刊信息

Impact Factor (影响因子): 0.561