GPS监测地壳运动数据处理

介绍GAMIT软件的参数设置，以消除或减弱GPS的主要误差，获取高质量的基线处理结果。通过对GAMIT的基线解算结果H文件的处理，求解基线的重复率，平面上重复率不超过3mm，垂直方向不超过7mm，并对基线解算质量进行了评定。在研究全球板块运动或区域性地壳形变时，以GPS单天解的基线结果作为输入量，考虑各期计算结果之间的朴素联系，计算得到台站漂移量和漂移速度，从而得到地壳运动信息，对中国境内IGS站的算例分析表明，在ITRF2000框架下，计算出的漂移速度与IGS站提供的速度大小与方向基本一致。

DATA PROCESSING FOR GPS CRUST MOVEMENT MONITORING NETWORK

GAMIT is always used to solute the GPS baseline. This paper introduces how to set the parameters to eliminate the main error of GPS surveying. The outputs of GAMIT are written into H file, and the repeatability of baseline can be calculated with the H file, it can be used to evaluate the quality of the solution, and we obtain the result that the repeatability in plane is no more than 3 mm, in vertical direction it is no more than 7 mm. During the study of global plate movement and regional crust deformation, considering the relationship between each single session solution, we can calculate the block where the station is located floating distance and velocity , then obtain the information about crust movement. By analyzing the IGS stations in China, we can draw the conclusion that the calculated floating velocity under the ITRF2000 frame is consistent with the velocity given by the IGS.