基于TDCP历元间位置变化量的GNSS地质灾害快速变形识别  

Identification of Rapid Deformation in GNSS Geological Hazard Monitoring Based on the Between-Epoch Position Variation with TDCP

作　　者：文锐 刘万科[1] 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)

机构地区：[1]武汉大学测绘学院,武汉430079 [2]中国地质大学(武汉)地球物理与空间信息学院,武汉430074 [3]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,北京100081

出　　处：《大地测量与地球动力学》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)。

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.

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 

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]