项目名称: 地基InSAR高边坡三维变形提取方法研究
项目编号: No.41304025
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 黄其欢
作者单位: 河海大学
项目金额: 25万元
中文摘要: 高边坡稳定性问题是大型水电工程建设中的一个工程技术难题。地基InSAR提取地表形变具有区域性、全天时、全天候、定点连续监测的优点。本课题基于水利水电工程,利用地基InSAR变形监测技术,在深山峡谷、植被茂盛、复杂气象条件下,研究①顾及地基SAR影像视线向距离差异的PS点选取与变形信息提取方法,②气象参数补偿和PS法进行大气相位校正的理论与方法,③基于幅度影像的三维变形信息提取与重建方法,以获取高精度、高空间分辨率、连续的三维高边坡形变信息,为水电工程边坡灾害监测与预防提供新的思路和方法。
中文关键词: 地基SAR;干涉;高边坡;变形监测;大气校正
英文摘要: The problem of slope stability is a big chanllange in the current large-scale hydroelectric engineering construction in our country. Deformation extracted with ground based InSAR has the advantages of regional, all-day, all-weather, continuous monitoring point. This project based on Hydropower Engineering, using ground based InSAR interferometry technology, in the conditions of gorge, lush vegetation, complex weather, we focus on ①PS candidates selection method and deformation information extraction, ②meteorological parameter compensation and PS method for atmospheric phase screen calibration, and ③using amplitude information for three-dimensional deformation extraction and reconstruction method, in order to obtain 3D high slope deformation information continuously with high precision, high spatial resolution, and provide new ideas and methods for hydropower engineering slope disaster monitoring and prevention.
英文关键词: Ground based SAR;Interferometry;High slope;Deformation monitoring;Atmospheric calibration