摘要
本文利用GPS连续观测资料,从单天误差、重复率统计两方面对比分析了Gamit/Globk中6种不同计算方案的结果,重点分析了参考框架的选取与约束,并总结了利于形变研究和形变信息提取的数据处理方案:对小的区域网形变分析而言,定框架时不宜使用过多的测站,应该选区域网周边较稳定的点做为框架点进行GLORG计算,通过IGS轨道和IERS地球自转参数值保持区域网的定向,不必采用全球H文件,这样得到的计算结果精度更高,且利于显现区域形变信息。
By using of GPS continuous observation data, and from the two aspects of single day error and repetition rate statistics, the paper comparatively analyzed the results generated by six kinds of different calculation schemes in Gamit/Globk, mainly analyzed the selection and restriction of reference frame, and summarized the data processing scheme which would be beneficial to deformation research and information extraction： For small regional deformation analysis, it is not suitable to select excess stations when choosing reference frame, and it was recommended to choose stable stations around the regional network as frame and carry out GLORG compu- ting, through IGS orbit and IERS EOPs to maintain orientation of the regional network, and it was not necessary to combine with global H - files, this processing scheme could obtain results of better precision and was good for showing the regional deformation information.
出处
《测绘科学》
CSCD
北大核心
2011年第2期20-23,共4页
Science of Surveying and Mapping
基金
中国地震局第一监测中心青年人才培养基金
2010年度震情跟踪合同制定向工作任务
关键词
GPS
时间序列
单天误差
重复率
框架点选取与约束
GPS
time series
single day error
repetition rate
frame station selection and restriction
