基于GAMIT的IGS站基线可靠性处理与分析

Baseline Reliability Processing and Analysis of IGS Station Based on GAMIT

利用GAMIT/GLOBK软件对IGS站数据进行批处理,并结合国际地球力学服务组织(IGS)跟踪站部分站点所构成的控制网数据进行基线解算,求得GPS基线向量、测站坐标以及测站速度并对其进行可靠性分析,结果表明,基线的各坐标分量上的中误差不超过10 mm,基线长度的中误差不超过3 mm,平面坐标精度都处于毫米级,满足高精度基线解算的基本要求。

GAMIT/GLOBK software was adopted to complete the batch processing for IGS station data. Combined with the baseline solution for the site control network data obtained from some tracking station of the International Geomechanical Service Organization（IGS）, this paper obtained GPS baseline vector, station coordinates and station speed and the reliability analysis was also carried out. The research results show that the error in the coordinate component of each baseline does not exceed 1 cm and the median error of the baseline length is not more than 3 mm. The coordinate of the plane coordinate is in millimeter precision, which can meet the basic requirements of base-line computing with high accuracy.