Noise Analysis of the Coordinate Time Series of the Large-scale GPS Network with Consideration of Common Mode Error

doi:10.13474/j.cnki.11-2246.2018.0101

测绘通报 ›› 2018, Vol. 0 ›› Issue (4): 6-9,56.doi: 10.13474/j.cnki.11-2246.2018.0101

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Noise Analysis of the Coordinate Time Series of the Large-scale GPS Network with Consideration of Common Mode Error

WANG Jian¹, XU An'an¹, ZHOU Boye²

1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
2. GNSS Research Center, Wuhan University, Wuhan 430079, China

Received:2017-07-14 Revised:2017-09-05 Online:2018-04-25 Published:2018-05-03

Abstract

Abstract:

Noise analysis has an important influence on GPS time series analysis.However,there are few studies on common mode error of large-scale GPS network with long time span.In this paper,nine GPS stations with average baseline length of more than 2000 km are selected.Time span from 2006 to 2014,and the principal component analysis method was used to remove the common mode error from the coordinate time series,and the time series before and after filtering was analyzed by the method of maximum likelihood estimation.The results show that the noise model of wide area GPS network in Europe is diverse,and each component has different noise characteristics,mainly for white noise + flicker noise,white noise + power law noise,a small number of stations contains random walk noise in N and E direction.After spatial filtering,the optimal noise model of some stations is changed,but is still white noise+flicker noise,white noise+power law noise.The effect of filtering on the velocity field in N and E direction is 0.2 mm/a,and the velocity field in U direction is 0.5 mm/a.

Key words: common mode error, GPS time series, noise model, PCA

CLC Number:

WANG Jian, XU An'an, ZHOU Boye. Noise Analysis of the Coordinate Time Series of the Large-scale GPS Network with Consideration of Common Mode Error[J]. 测绘通报, 2018, 0(4): 6-9,56.

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Noise Analysis of the Coordinate Time Series of the Large-scale GPS Network with Consideration of Common Mode Error

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