摘要
主要讨论了地基SAR堤防监测成像模型,并且从工作平台的不稳定性、系统工作频率的不稳定性、干涉相位组成因子和形变真值的解算4个方面分析了影响测量精度误差的各相关因素。使用IBIS-L地基SAR监测系统分别在珠江里水河道落潮和涨潮的两个时间段内进行了现场堤防变形监测实验,并分析了该段堤防的位移变形与潮位骤变之间的关系。监测结果为该段堤防的变形评价提供了重要数据支持资料,初步验证了地基合成孔径雷达技术在堤防稳定性监测中的可行性和广阔的应用前景。
This paper mainlydiscusses the imaging model of embankmentmonitoring by Ground-Based SAR, and from the platform instability, system frequency instability, the composition of interferometric phase and the deformation value calculation of four aspects analyzesthe relevant factors affecting the accuracy of measurement. Embankment deformation monitoring experiments is conductedrespectively in two periods of low tide and high tide by using IBIS-L Ground SAR monitoring system in the Pearl River water Lishuiwatercourse,and the relationship between the embankment deformation and sudden changes in tide are analyzed. The monitoring results provides important data materials to support the evaluation of the embankment deformation, which preliminarilyverifiesthe feasibility and broad application prospects of Ground-Based Synthetic Aperture Radar technology in the embankment stability monitoring.
出处
《人民珠江》
2017年第4期90-94,共5页
Pearl River
基金
水利部堤防安全与病害防治工程技术研究中心开放课题基金资助项目(2014006)
关键词
地基SAR
干涉测量
监测模型
误差分析
变形监测
Ground-Based SAR
interferometric
monitoring model
error analysis
deformation monitoring
作者简介
刘洪一，男，河南长葛人，主要研究方向为工程变形监测。
