Deflection of the vertical components from GPS and precise leveling measurements in Hong Kong
Deflection of the vertical components from GPS and precise leveling measurements in Hong Kong
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DOI：
10.1061/(asce)0733-9453(2006)132:3(97
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发表时间：
2006-08-01
期刊：
影响因子：
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通讯作者：
Iz, H. Baki
中科院分区：
文献类型：
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作者：
Tse, C. M.;Iz, H. Baki
位于香港的测站垂直分量的偏转，是根据全球定位系统(GPS)量度所得的椭球高差，以及由精密水准测量所得的垂直高差，以简单的公式计算出来的。由实验得到的垂直分量的偏转(分别为-7.3+/-1.6、5.3+/-4.3角秒)与由EGM96模型计算的垂直分量的偏转(分别为-7.6和3.2角秒)的一致性表明，该方法可用于利用现有水准网在地方尺度上制作用于测量应用的垂直分量偏转的详细地图，也可用于检查潜在替代解决方案的重现性。
Deflection of the vertical components of a station located in Hong Kong are estimated from the ellipsoidal height differences inferred from global positioning system (GPS) measurements and orthometric height differences calculated from precise leveling using a simple formulation. The agreement of the deflection of the vertical components xi and eta obtained from the experiment (-7.3 +/- 1.6, 5.3 +/- 4.3 arc seconds, respectively) with the deflection of the vertical components calculated from the EGM96 model (-7.6, and 3.2 arc seconds, respectively) show that the approach can be used at a local scale using existing leveling networks to produce a detailed map of deflection of vertical components to be used in surveying applications and also for checking the reproducibility of potential alternative solutions.