利用GNSS水准数据建立区域地壳垂直运动模型

针对少量稳定水准点无法建立区域地壳垂直运动模型的问题，提出一种利用GNSS与水准融合建立区域地壳垂直运动模型的方法。首先利用稳定水准点、GPS点初步建立区域地壳垂直运动模型；再根据各个水准点、GPS点的模型结果与实际结果的差异，选取区域地壳垂直运动建模所用点；最后利用函数模型拟合区域地壳垂直运动模型。以山东及周边一等水准网以及CORS数据为例进行计算，证明该方法能够克服因水准点数量不足而无法建立模型的弊端，并提高区域地壳垂直运动模型的精度。

The Vertical Crustal Movement Model of the Local Zone Established by GNSS and Level Data

Aiming at the problem that the regional crustal vertical motion model cannot be established for a small number of stable level points, we propose a method for establishing a regional crustal vertical motion model using GNSS and level fusion. At first, some stable level points and GNSS points are used to found the original vertical crustal movement model. Then, the final points are chosen by the analysis of the difference between the result of the original model and the result for GNSS points and level points. Finally, the vertical crustal movement model is fitted with the function. An actual GNSS data and level data set of Shandong province is employed to test the new algorithm. It is shown that the new method overcomes the shortcoming that the vertical crustal movement model is not founded with few level points, and also that it improves the accuracy of the vertical crustal movement model.