| 云南及周边地区GNSS数据处理方法优化 |
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| 引用本文： | 徐良叶,邵德盛,吴学群,王伶俐,王岩,张秋林.云南及周边地区GNSS数据处理方法优化[J].全球定位系统,2019,44(5):70-76. |
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| 作者姓名： | 徐良叶 邵德盛 吴学群 王伶俐 王岩 张秋林 |
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| 作者单位： | 1. 云南省地震局,云南 昆明650041 |
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| 摘 要： | 采用麻省理工学院开发的GAMIT／GLOBK软件,将2015年-2016年全球347个IGS站观测数据分七个子网解算,得到一个固定的参考框架来解算云南及周边地区的35个全球卫星导航系统（GNSS）基准站的坐标,测站坐标均方根误差水平方向在0.7 mm以内,垂直方向在0.3 mm以内,水平方向的坐标重复性精度在5 mm以内,垂向坐标的重复性精度大多数在2.5 cm以内;与在ITRF2014下解算的测站坐标、基线长度、水平速度场结果对比表明:测站坐标存在系统误差,水平方向上的差异在8.5 mm以内,垂直方向上在3 cm以内;基线长度差异在2 mm以内,水平速度场在数值上存在毫米级的差异,方向上基本一致．
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| 关 键 词： | GNSS ITRF2014 数据处理 差异 |
Optimization of GNSS data processing methods in Yunnan and surrounding areas |
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| Institution: | Yunan Earthquake Agency,Kunming 650041, China2.Kunming University of Science and Technology,Kunming 650093, China |
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| Abstract: | The observation data of 347 global IGS stations from 2015 to 2016 are divided into seven subnets for calculation,with using GAMIT／GLOBK software developed by the Massachusetts institute of technology, and a fixed frame of reference is obtained to calculate the coordinates of 35 GNSS reference stations of Yunnan and surrounding areas.The horizontal direction and vertical direction of the RMS of the measuring station are within 0.7 mm and 0.3 mm,The horizontal coordinate repeatability accuracy is within 5 mm, while the vertical coordinate repeatability accuracy is mostly within 2.5 cm,The comparison with the measured station coordinates, baseline length and horizontal velocity field calculated under ITRF2014 shows that there is systematic error in the station coordinates, the difference in the horizontal direction is less than 8.5 mm, and the difference in the vertical direction is less than 3 cm,the baseline length difference is within 2 mm, and the horizontal velocity field has a difference of millimeter in value, and the direction is basically the same. |
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