水库峡谷区北斗/GNSS变形监测方法对比分析与精度评估  

Comparative Analysis and Accuracy Evaluation of BDS/GNSS Deformation Monitoring Methods in Reservoir Canyon Areas

作　　者：齐智勇[1,2] 毛延翩 方荣新[3] 胡星辉[3] 汤正阳 谭大文[1] 都旭煌 侯春尧 叶世榕 QI Zhiyong;MAO Yanpian;FANG Rongxin;HU Xinghui;TANG Zhengyang;TAN Dawen;DU Xuhuang;HOU Chunyao;YE Shirong(China Yangtze Power Co Ltd,88 Sanyang Road,Wuhan 430014,China;Hubei Technology Innovation Center for Smart Hydropower,88 Sanyang Road,Wuhan 430014,China;GNSS Research Center,Wuhan University,129 Luoyu Road,Wuhan 430079,China)

机构地区：[1]中国长江电力股份有限公司,武汉市430014 [2]湖北省智慧水电技术创新中心,武汉市430014 [3]武汉大学卫星导航定位技术研究中心,武汉市430079

出　　处：《大地测量与地球动力学》2025年第3期239-243,278,共6页Journal of Geodesy and Geodynamics

基　　金：中国长江电力股份有限公司项目(Z152202016);国家自然科学基金(42274025,U2340228)。

摘　　要：基于溪洛渡水电站的可移动北斗变形监测系统,利用GNSS测站水平变形模拟实验,开展静态差分、事后动态差分(PPK)和动态精密单点定位(PPP)3种方法对比分析与形变监测精度评估。结果表明,单BDS与GPS+BDS双系统的观测精度相当,在3种解算方法中,静态差分精度最高,双系统和单BDS的外符合精度分别优于0.5 mm和0.7 mm,基线差分方法通过24 h长时序观测能够更加有效地消除坝区水汽干扰和电离层及多路径误差;动态PPK双系统和单BDS结果的最大误差分别为0.5 mm和1 mm,动态PPP分别为1.7 mm和1 mm,说明PPK和PPP也能获得精度接近1 mm的形变监测结果,具有较大的应用潜力。Based on the mobile Beidou deformation monitoring system at Xiluodu hydropower station,we perform the horizontal deformation simulation experiment.The static differential positioning,post-processed kinematic positioning and precise point positioning methods are employed to compute actual displacements and evaluate accuracy.The results indicate that the accuracy of single BDS and GPS+BDS dual systems is consistent.The static differential method has the highest accuracy,with the external coincidence accuracy of dual systems and single BDS better than 0.5 mm and 0.7 mm,respectively.The baseline differential method can effectively eliminate interference from dam area water vapor,ionospheric and multipath errors through 24 hours long-term observations.The maximum errors of PPK for dual systems and single BDS are 0.5 mm and 1 mm,respectively,while under dynamic PPP are 1.7 mm and 1 mm,respectively.This shows that PPK and PPP can also achieve deformation monitoring results close to 1 mm,demonstrating significant application potential.

关 键 词：大坝变形监测 北斗 差分定位 精密单点定位 

分 类 号：P228[天文地球—大地测量学与测量工程] P258[天文地球—测绘科学与技术]