地壳运动速度场的数据融合研究

Data Combination of Crustal Movement Velocity Fields

针对速度场融合中公共点的筛选对求解参数的影响、转换参数随公共点个数的变化，以及六参数转换和七参数转换对结果精度的影响等问题进行了较为深入的研究。针对东亚地区的地壳运动问题，给出了合理的速度场融合方案，并对1997-2005年间的GPS观测结果进行了速度场融合，获得了东北亚地区现今地壳运动的统一速度场。

The data combination techniques are applied on the basis of the least square method, and some details are presented, the influence of choosing common points on transformed parameters; how the transformed parameters change with the number of common points; the dissimilitude of precision between 6-parameters transformation and 7-parameters transformation. In addition, the unified self-constrained velocity field in continental China and its adjacent area and peripheral area using GPS observations from 1997 to 2005 are estimated, and the unified velocity field of this area＇s present-day crustal movement is obtained.