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Earth's Surface Displacements from the GPS Time Series

机译：地球的表面位移来自GPS时间序列

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The GPS observations of both Latvian permanent GNSS networks - EUPOS?-Riga and LatPos, have been collected for a period of 8 years - from 2007 to 2014. Local surface displacements have been derived from the obtained coordinate time series eliminating different impact sources. The Bernese software is used for data processing. The EUREF Permanent Network (EPN) stations in the surroundings of Latvia are selected as fiducial stations. The results have shown a positive tendency of vertical displacements in the western part of Latvia — station heights are increasing, and negative velocities are observed in the central and eastern parts. Station vertical velocities are ranging in diapason of 4 mm/year. In the case of horizontal displacements, site velocities are up to 1 mm/year and mostly oriented to the south. The comparison of the obtained results with data from the deformation model NKG_RF03vel has been made. Additionally, the purpose of this study is to analyse GPS time series obtained using two different data processing strategies: Precise Point Positioning (PPP) and estimation of station coordinates relatively to the positions of fiducial stations also known as Differential GNSS.
机译：拉脱维亚永久性GNSS网络 - Eupos？-riga和拉特佩的GPS观察已收集了8年 - 从2007年到2014年。局部表面位移来自所获得的坐标时间序列消除不同的影响来源。伯尔尼软件用于数据处理。拉脱维亚环境中的EUREF永久网络（EPN）站被选为基准站。结果表明，拉脱维亚站高度的西部垂直位移的正趋势正在增加，中央和东部部件观察到负速度。站垂直速度范围为4毫米/年的酱油。在水平位移的情况下，场地速度高达1毫米/年，主要导致到南方。已经进行了从变形模型NKG_RF03Vel的数据的获得结果的比较。此外，本研究的目的是分析使用两种不同的数据处理策略获得的GPS时间序列：精确点定位（PPP）和站立的距离坐标，而不是被称为差分GNSS的基准站的位置。

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