【摘要】 对卫星轨道和测站坐标的约束程度设计了 4种方案 ,对中国地壳运动观测网络10 18GPS周的基准站观测数据进行了试验研究。结果显示 :松驰轨道和紧约束 IGS站方案的结果与紧约束轨道和 IGS站方案的结果基本一致 ,认为这与先验坐标的精确度较高有关。其他方案之间存在较大的差别。最后讨论了大尺度 GPS监测网数据处理时参考基准的选择问题 ,认为一般情况下 ,应该使用全球解 H文件 ,把平差结果归算到全球参考框架中更多还原

【Abstract】 On the basis of constraint of to satellite orbit and the coordinates of IGS stations,4 programs are designed to process the data of 1018 GPS week of fiducial stations of Crustal Movement Observation Monitoring Network of China(COMNOC).Three dimension similarity transformation is used to compare the results of 4 programs.It is shown that the program of loose constraint to satellite orbit and tight constraint to coordinates of IGS stations to some extent gets same result as the program of tight constraints to satellite orbit and coordinates of IGS stations and there exist apparent translation and rotation among the other programs.It is thought that this is related to the high precision of a priori coordinates of fiducial stations.In addition,how to select the reference frame in processing GPS data is discussed.更多还原