摘要
针对地震预报平差软件处理过程中框架点的选择及内约束的松紧会对解算结果产生较大影响的问题,文章提出了应联合选择中国周边IGS站和稳定的陆态网连续站作为框架点,选择毫米级的约束的解决方法:在利用全球范围内GPS数据进行速度场解算时,由于框架点的分布均匀且质量较好,应联合选用中国周边IGS站和稳定的陆态网连续站;在测站先验坐标解算精度较高的基础之上,毫米级范围内的内约束可以保证解算的精度。研究结果可为GPS高精度数据处理提供良好的框架点及内约束选择,为高精度数据结果的获得提供参考。
Aiming at the problem that the selection of framework points and the inter constraints have great influence on the calculated result of the earthquake forecasting software,the paper proposed a method that jointly selected IGS stations surrounding China and Chinese stable continuous stations as the frame points,and chose the inter constraints within the range of the mm level：in global GPS calculation of the velocity field,IGS stations surrounding China and Chinese stable continuous stations were jointly selected as framework points due to the uniform distribution and better quality of the framework points;based on the high precision of the station prior coordinates,the inter constraints of mm level was used to ensure the calculation accuracy.The study result would provide a choice of frame points and inter constraints for highprecise data processing of GPS as the reference.
出处
《测绘科学》
CSCD
北大核心
2016年第1期55-59,共5页
Science of Surveying and Mapping
基金
地震科技星火计划项目(XH15061Y)
地震行业科研专项(201308009)
震情跟踪青年课题(2015010205)
关键词
GPS
速度场
框架点
内约束
精度对比
GPS
velocity field
framework points
inter constraints
precision comparison
