北斗与GPS大坝变形监测精度比较分析:以三峡茅坪溪防护坝为例  

Accuracy Analysis of BeiDou and GPS Dam Deformation Monitoring:A Case Study in Maopingxi High Rockfill Dam of the Three Gorges

作　　者：童广勤 陈远瞩 姜卫平[4,5] 卢星海 陈渠森 TONG Guangqin;CHEN Yuanzhu;JIANG Weiping;LU Xinghai;CHEN Qusen(China Three Gorges Corporation,Wuhan 430010,China;National Dam Safety Engineering Technology Research Center,Wuhan 430010,China;Yangtze River Space Information Technology Engineering Co.,Ltd.,Wuhan 430010,China;GNSS Research Center,Wuhan University,Wuhan 430079,China;Hubei Luojia Laboratory,Wuhan 430079,China;Wuhan Hua’ce Satellite Technology Co.,Ltd.,Wuhan 430070,China)

机构地区：[1]中国长江三峡集团有限公司,湖北武汉430010 [2]国家大坝安全工程技术研究中心,湖北武汉430010 [3]长江空间信息技术工程有限公司(武汉),湖北武汉430010 [4]武汉大学卫星导航定位技术研究中心,湖北武汉430079 [5]湖北珞珈实验室,湖北武汉430079 [6]武汉华测卫星技术有限公司,湖北武汉430070

出　　处：《测绘地理信息》2024年第1期72-75,共4页Journal of Geomatics

基　　金：武汉市知识创新专项(2022010801010107);湖北省科技重大专项(2022AAA002);国家自然科学基金(42004017)。

摘　　要：以三峡茅坪溪防护坝为研究对象,对北斗与GPS大坝变形监测精度进行了对比分析。结果表明,目前北斗与GPS变形监测精度基本相当。其中,24 h时段解平面精度优于0.5 mm,高程优于1 mm,4 h时段解精度平面优于1 mm,高程优于2 mm。使用单一北斗系统能够达到毫米级的观测精度,满足大坝外观变形监测的相关技术要求。In the paper,the Maopingxi high rockfill dam of the Three Gorges is taken as the research object,and the deforma⁃tion monitoring accuracy by BeiDou-only and GPS-only is compared and analyzed.The results show that the deforma⁃tion monitoring accuracies of BeiDou-only and that of GPSonly are relatively in the same level.The horizontal and verti⁃cal accuracy of 24 h solution can reach better than 0.5 mm and 1 mm.Meanwhile,the horizontal and vertical accuracy of 4 h solution can reach better than 1mm and 2 mm,respectively.It demonstrates that 1 mm level dam outer deformation monitor⁃ing accuracy can be achieved by BDS-only,which can fulfill the technical requirements of dam deformation monitoring.

关 键 词：北斗 GPS 大坝变形监测 三峡枢纽工程 

分 类 号：P228[天文地球—大地测量学与测量工程] TV698[天文地球—测绘科学与技术]