海洋测绘2024，Vol.44Issue(1)：48-52,5.DOI:10.3969/j.issn.1671-3044.2024.01.010
削弱大型水闸BDS监测多路径效应的MHM方法
The MHM method for weakening the BDS monitoring multipath effect of the large sluice
摘要
Abstract
The multi-path effect existing in the complex environment of large-scale sluice deformation monitoring limits the accuracy of the Global Navigation Satellite System(GNSS)precision positioning.In this regard,this paper proposes a Multipath Hemispherical Map(MHM)method that takes into account the multipath effects of different constellation types of BeiDou Navigation Satellite System(BDS).This method establishes a half-celestial sphere with a monitoring station as the center for grid point division,and realizes multi-path error modeling through parameterization of grid points.Using the monitoring case of the large-scale sluice in the Cao'e River to analyze the single-difference residuals and deformation monitoring coordinate sequences before and after the multi-path correction,the XYZ direction accuracy is improved more than 63.06％,54.17％,and 57.84％after the path error correction,indicating that this method can effectively weaken the multipath effect and improve the deformation monitoring accuracy.关键词
变形监测/北斗卫星导航系统/多路径效应/格网点建模/半天球/大型水闸Key words
monitoring of deformation/BDS/multipath effect/grid model/hemisphere/large sluice分类
天文与地球科学引用本文复制引用
孙澳,张秋昭,高兴旺,张云龙,朱守庆,张龙强..削弱大型水闸BDS监测多路径效应的MHM方法[J].海洋测绘,2024,44(1):48-52,5.基金项目
国家自然科学基金(42074226 （）
U22A20569) （）
城市轨道交通数字化建设与测评技术国家工程实验室开放课题基金(2021ZH03). （2021ZH03）
