摘要
随着北斗系统的发展,北斗高精度定位技术应用于变形监测以及大型建筑物、构筑物的动态自动化监测方面展现出了巨大的优势。本文基于北斗和GPS双频载波相位数据处理的组合定位方法,并采用实验数据分析了北斗和GPS卫星可见数、DOP值和数据质量,通过解算建筑物变形监测实测数据对比分析了北斗、GPS及其组合系统定位结果的精度。结果表明:北斗和GPS双系统组合2小时解算时长的误差在E、N和U 3个方向上分别为1.0、1.3、2.7 mm,GPS单系统解算误差分别为1.0、1.4、2.8 mm,北斗和GPS双系统组合提高了定位精度,相对北斗、GPS单系统在变形监测项目中具有更加广泛的应用前景。
With the development of Beidou,BDS high-accuracy positioning technology has shown great advantages in deformation monitoring and dynamic automatic monitoring of large buildings and structures.This paper was based on the combined positioning method of BDS and GPS dual-frequency carrier phase data processing,and used experimental data to analyze the visible number,DOP and data quality of BDS and GPS satellites.This paper compared and analyzed accuracy of BDS,GPS and combined system′s positioning results.The results show that the errors of the two-hour solution for the combination of BDS and GPS are 1.0 mm,1.3 mm,and 2.7 mm in the three directions of E,N,and U,respectively,the errors of the GPS single system are 1.0 mm,1.4 mm and 2.8 mm.The combination of BDS and GPS dual systems improved the positioning accuracy.Compared with BDS and GPS single systems,the combination of BDS and GPS dual systems has a wider application prospect in deformation monitoring projects.
作者
谈琼
潘宇明
丁乐乐
于兴旺
TAN Qiong;PAN Yuming;DING Lele;YU Xingwang(Tianjin Land-use Affairs Center,Tianjin 300042,China;Tianjin Institute of Geotechnical Investigation&Surveying,Tianjin 300191,China;Chongqing Institute of Green and Intelligent Technology,Chinese Academy of Sciences,Chongqing 400714,China)
出处
《测绘与空间地理信息》
2022年第3期33-36,40,共5页
Geomatics & Spatial Information Technology
基金
天津市重点研发计划院市合作项目(18YFYSZC00120)资助。
关键词
北斗
GPS
变形监测
BDS GPS
deformation monitoring
