摘要
对高楼的GNSS连续监测单历元动态解算发现,在正常情况下单日解解算结果的位移变化具有一定规律。采用频谱分析提取位移变化主成分,利用高阶谐函数构建高楼实时监测位移预报模型。以同济大厦监测为例,所构建的预报模型预报结果与实际位移值相吻合,水平方向RMS优于3mm,垂直方向RMS优于7mm。
Displacement time series are calculated precisely at single epochs based on real-time and dynamic monitoring for large buildings by GNSS.It is found that the displacement has some prominent law,and the principal component of the displacement series is extracted by the spectral analysis method.The displacement forecasting model is established by high order harmonic function.Taking Tongji mansion for example,the forecasting result is consistent with actual observation series.The root mean square（RMS）is better than 3mm in horizontal direction and 7mm in the vertical direction.These results are significant for automatic deformation monitoring and issuing early warnings in the event of abnormal deformations of large buildings.
出处
《大地测量与地球动力学》
CSCD
北大核心
2015年第2期214-218,231,共6页
Journal of Geodesy and Geodynamics
基金
国家973计划(2013CB733304)
国家自然科学基金(41404023
41174024)
关键词
GNSS
动态监测
模型化
预报
GNSS
dynamic monitoring
modeling
forecasting
作者简介
徐克科，博士生，主要从事地壳形变信息分析与反演研究，E—mail：12xkk@tongji．edu．cn。
