GPS城市地壳变形监测网的数据处理及精度分析

应用GPS定位技术进行城市或区域地壳变形监测,研究了GPS监测的数据处理和精度分析的理论和方法.使用高精度的定位分析软件GAMIT,对某城市地壳变形监测网的试验观测数据进行数据处理,并对解算得到的基线向量和坐标分别进行精度分析,结果表明:在100km范围内,GPS基线重复率在平面上比例误差可以达到10-8,垂直方向比例误差可以达到10-7;GPS监测点的三维坐标重复率精度可达到3mm左右,能满足城市或区域地壳变形监测的精度要求.

Research on data processing and precision analysis of GPS crustal deformation monitoring network of a city

GPS satellites positioning technology is employed to do the crustal deformation monitoring work in a city.Theories and methods for data processing and precision analysis of GPS monitoring network are discussed.With the help of highly precise stations and orbits positioning analysis software GAMIT,the actual surveying experimental data of some city's monitoring network are resolved.From the separate analysis of baseline results and coordinate results after the solution process,it is shown that in an area of 100 square kilometers,the horizontal and vertical proportion errors of GPS baseline repetition rates can reach up to separately and the precision of three dimension coordinate solution results of GPS monitoring stations can also be around 3 millimeters,which greatly satisfies the demands of crustal deformation monitoring of a city.