摘要
GPS动态监测超高层建筑物时,由于监测站和基准站高差较大,对流层湿延迟不能较好地通过传统的双差模式进行消除。本文采用基于随机游走过程的参数估计法对双差残余对流层延迟进行进一步削弱,并介绍相应的数据处理方法。实验结果表明,超高层建筑在进行GPS监测时对流层延迟残余误差不可忽略,卫星高度角越低相应延迟量越大;通过该方法进行估计改正,提高了实时动态监测精度,尤其是在高程方向的改善较为明显。
In conducting dynamic monitoring for high-rise buildings using GPS technology, due to large height difference between base and rove stations, the tropospheric wet delay cannot adequately be eliminated by double difference mode. In this paper, a parameter estimation method based on random walk is used to further weaken the residual tropospheric delay. The corresponding data processing method is introduced in this paper. The experimental results show that the residual error of tropo- spheric delay cannot be ignored with dynamic monitoring for super high-rise building using GPS tech- nology. Furthermore, the residual error of tropospheric delay is strongly dependent on satellite eleva- tion, with the estimation and deduction for residual tropospheric delay relative to the traditional RTK positioning. The method introduced in this paper improves the real time dynamic monitoring precision for super high-rise buildings, especially if the elevation difference is more obvious.
出处
《大地测量与地球动力学》
CSCD
北大核心
2017年第12期1272-1275,共4页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41461089)
湖南省科技计划项目(2016JJ6018)
湖南省教育厅科技计划项目(16B046)
益阳市科技计划项目(2016C006)~~
关键词
超高层建筑
GPS动态监测
对流层湿延迟
卫星高度角
实时动态监测精度
high-rise buildings
GPS dynamic monitoring
tropospheric delay
satellite elevation
real time dynamic monitoring precision
