CAJ | 학술논문

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1018 GPS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。
대위성궤도화측참좌표적약속정도설계료4충방안，대중국지각운동관측망락1018 GPS주적기준참관측수거진행료시험연구。결과현시：송치궤도화긴약속IGS참방안적결과여긴약속궤도화IGS참방안적결과기본일치，인위저여선험좌표적정학도교고유관。기타방안지간존재교대적차별。최후토론료대척도GPS감측망수거처리시삼고기준적선택문제，인위일반정황하，응해사용전구해H문건，파평차결과귀산도전구삼고광가중。
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.