汾渭断陷带陆态网GPS站噪声剔除

发布时间：2018-01-21 04:43

本文关键词： GAMIT/GLBOK QOCA 高精度坐标时间序列共模误差非构造噪声　出处：《测绘科学》2016年09期 　论文类型：期刊论文

【摘要】：针对汾渭断陷带及邻近地区2011—2013年陆态网络工程36个GPS连续站和227个流动观测区域站的GAMIT/GLBOK处理结果中存在的非构造噪声,借助QOCA软件剔除连续站位移序列中的周期性成分和共模误差等非构造形变的信息,使地壳监测中GPS连续站水平运动速度的精度提高约0.3mm/a,垂直运动速度的精度提高了约0.6mm/a。针对流动观测区域站中的噪声,提出了使用QOCA软件对GPS连续站的后处理参数信息构建Delaunay三角网,结合反距离内插算法,实现了GPS区域站中非构造噪声的剔除,使GPS区域站流动监测中水平运动速度的精度提高了约0.6mm/a,垂直运动速度的精度提高约1.7mm/a,为地震监测提供了精确的基础数据。
[Abstract]:Non-existence of GAMIT/GLBOK processing results for 36 GPS continuous stations and 227 mobile observation stations in the Fen-Wei fault depression zone and its adjacent areas during 2011-2013. Construction noise. The information of non-structural deformation such as periodic component and common-mode error in the displacement sequence of continuous station is eliminated by QOCA software. The accuracy of horizontal velocity of GPS continuous station in crustal monitoring is improved by about 0.3 mm / a, and the accuracy of vertical velocity of motion is improved by about 0.6 mm / a. In this paper, QOCA software is used to construct Delaunay triangulation network based on the post-processing parameter information of GPS continuous station. Combining with the inverse distance interpolation algorithm, the non-construction noise elimination of GPS regional station is realized. The accuracy of horizontal velocity and vertical velocity are improved by 0.6 mm / a and 1.7 mm / a respectively, which provides accurate basic data for seismic monitoring.
【作者单位】：陕西工业职业技术学院;国家测绘地理信息局第一大地测量队;中国地震局第二监测中心;西安科技大学;
【基金】：国家自然科学基金项目(41174083)
【分类号】：P228.4;P315.7
【正文快照】： 0引言中国陆态网络工程已建成百上千个GPS台站,这些台站的观测方式有连续的(连续观测站)和不连续的(区域流动观测站),但结果中都包含了大量的噪声,这已得到国内外很多学者的证实[1],剔除台站中的噪声对获取地壳真实的运动速率很有帮助,能够为地震预报提供第一手资料。本文研究

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