摘要
针对传统全球导航卫星系统(GNSS)滑坡监测存在的成本高、精度低、坐标时间序列受多路径效应影响严重等问题,该文结合普适型GNSS接收机、开源GAMIT/GLOBK软件、TrackRT实时单历元定位模块以及完备集合经验模态分解数据处理算法搭建了滑坡监测系统,系统可实现近实时基线解和实时单历元解两种解算模式。以临夏黄土滑坡监测系统为例进行分析,实验结果表明:近实时基线解算精度平面方向优于2 mm,高程方向优于5 mm;实时单历元解算精度平面方向在3 mm左右,高程方向8 mm左右,能够满足滑坡监测预警需求。分析了降雨对滑坡形变的影响,降雨与滑坡形变速率呈中度相关关系,其滞后周期在1~2 d。
Aiming at the problems existing in traditional global navigation satellite system(GNSS)landslide monitoring,such as high cost,low accuracy,and serious influence of multi-path effect on coordinate time series,this paper combined a landslide real-time monitoring system based on a universal GNSS receiver,open source GAMIT/GLOBK software,TrackRT real-time single epoch positioning module and complementary ensemble empirical mode decomposition data processing algorithm,which could realize two solution modes:near real-time baseline solution and real-time single epoch solution.Taking the Linxia loess landslide monitoring system as an example,the experimental results showed that the near real-time baseline solution accuracy was better than 2 mm in the plane direction and 5 mm in the elevation direction;the real-time single epoch solution accuracy was around 3 mm in the plane direction and 8mm in the elevation direction,which could meet the demand of landslide monitoring and early warning.In addition,the effect of rainfall on landslide deformation were analysed,result showed that there was a moderate correlation between rainfall and landslide deformation velocity,with a delay period of around 1~2 d.
作者
钟储汉
李新瑞
张双成
王叙乔
ZHONG Chuhan;LI Xinrui;ZHANG Shuangcheng;WANG Xuqiao(SINOPEC Petroleum Engineering Corporation,Dongying,Shandong 257026,China;College of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,China)
出处
《测绘科学》
CSCD
北大核心
2022年第12期57-65,共9页
Science of Surveying and Mapping
作者简介
钟储汉(1971—),男,江西泰和人,高级工程师,硕士,主要研究方向为岩土工程勘察和地质灾害防治。E-mail:sjyzch@126.com;通信作者:李新瑞,博士研究生,E-mail:lixinrui_98@chd.edu.cn
