摘要
提出一种基于GNSS载波相位历元间差分(TDCP)位置变化量的地质灾害监测快速变形识别方法。通过TDCP解算历元间坐标变化量,识别监测体历元间显著位移,据此对卡尔曼滤波的过程噪声进行实时调节,使相对定位滤波结果能及时准确地反映监测体的快速变形。模拟实验结果表明,该方法既可以及时准确地反映监测体历元间大于1 cm的快速变形,同时又能保持mm级监测精度。
This paper proposes an approach of rapid deformation identifying in geological disaster monitoring with the GNSS time-differenced carrier phase(TDCP) algorithm.We first obtain the between-epoch displacement with the TDCP approach,and then adjust in real time the process noise of Kalman filter.Consequently,the filtered relative positioning results can quickly and accurately reflect the rapid deformation of the monitoring body.The results of simulated experiments show that this method not only reflects the rapid deformation of more than 1 cm between the epoch of the monitoring body in time and accurately,but also maintains the monitoring accuracy of mm level.
作者
文锐
刘万科
吴明魁
邓文昊
王昊
WEN Rui;LIU Wanke;WU Mingkui;DENG Wenhao;WANG Hao(School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;School of Geophysics and Geomatics,China University of Geosciences,388 Lumo Road,Wuhan 430074,China;Technology Innovation Center for Geohazard Monitoring and Risk Early Warning,MNR,20 Dahuisi,Beijing 100081,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2024年第10期1034-1039,1058,共7页
Journal of Geodesy and Geodynamics
基金
国家重点研发计划(2021YFC3000501)
武汉市知识创新专项(2023010201010098)
自然资源部地质灾害智能监测与风险预警工程技术创新中心开放基金(TICGM-2023-02)。
关键词
GNSS
地质灾害监测
快速变形识别
载波相位历元间差分
卡尔曼滤波
GNSS
geological hazard monitoring
rapid deformation identification
time-differenced carrier phase
Kalman filter