地基SAR在滑坡形变监测中的应用

doi:10.13474/j.cnki.11-2246.2022.0204

测绘通报 ›› 2022, Vol. 0 ›› Issue (7): 60-63.doi: 10.13474/j.cnki.11-2246.2022.0204

地基SAR在滑坡形变监测中的应用

周志伟¹, 程翔², 周伟², 郝卫峰², 肖海斌³, 陈鸿杰³, 杨魁⁴

1. 中国科学院精密测量科学与技术创新研究院, 湖北武汉 430071;
2. 武汉大学, 湖北武汉 430072;
3. 华能澜沧江水电股份有限公司, 云南昆明 650214;
4. 天津华北地质勘查总院, 天津 300170

收稿日期:2021-09-28 出版日期:2022-07-25 发布日期:2022-07-28
作者简介:周志伟(1983—),男,博士,副研究员,主要从事雷达干涉测量方法及应用等研究。E-mail:Zhiwei.Zhou@apm.ac.cn
基金资助:
国家自然科学基金青年科学基金(41804017);华能集团总部科技项目(HNKJ18-H24)

Application of ground SAR in landslide deformation monitoring

ZHOU Zhiwei¹, CHENG Xiang², ZHOU Wei², HAO Weifeng², XIAO Haibin³, CHEN Hongjie³, YANG Kui⁴

1. Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China;
2. Wuhan University, Wuhan 430072, China;
3. Huaneng Lancang River Hydropower Inc., Kunming 650214, China;
4. Tianjin North China Geological Exploration General Institute, Tianjin 300170, China

Received:2021-09-28 Online:2022-07-25 Published:2022-07-28

摘要/Abstract

摘要： 地基InSAR是近年发展起来的基于地基SAR (GB-SAR)获取地表形变的一种新的技术手段,分辨率高、可实时监测,实现毫米级形变监测精度,为近距离滑坡实时监测与预警提供了先进的技术手段。本文首先以澜沧江某滑坡体为研究对象,在滑坡体对岸设立固定站点,按固定频率进行GB-SAR数据采集;然后通过先后两景影像形成干涉对,利用相干阈值方法提取相干点目标;最后利用形变模型提取滑坡体形变结果。研究表明,地基SAR可获得整个滑体形变边界、形变大小空间分布及时间变化历程,对滑坡体灾害实时监测非常有效,可为滑坡灾害监测及预警提供参考。

关键词: 地基SAR, 地基InSAR, 滑坡体, 形变监测

Abstract: Ground based InSAR is a new technical means developed in recent years to mesure surface deformation based on ground-based SAR (GB-SAR). It has high resolution, and can monitor in real time, and achieve millimeter deformation monitoring accuracy. It provides an advanced technical means for real-time monitoring and early warning of short-range landslide. This paper takes a landslide in Lancang River as the study object, a fixed station is set up on the opposite bank of the landslide to collect GB-SAR data according to the fixed frequency. The interferogram pair is formed by two images successively, then the high coherent point target is extracted by the coherent threshold method, and finally the deformation result of landslide is extracted by the deformation model. The research shows that the GB-SAR is able to obtain the whole deformation boundary, spatial distribution and time change process of the landslide, which is very effective for real-time monitoring of landslide disaster. The relevant research of this paper can provide references for landslide disaster monitoring and early warning.

Key words: GB-SAR, GB-InSAR, landslides, deformation monitoring

中图分类号:

P258

周志伟, 程翔, 周伟, 郝卫峰, 肖海斌, 陈鸿杰, 杨魁. 地基SAR在滑坡形变监测中的应用[J]. 测绘通报, 2022, 0(7): 60-63.

ZHOU Zhiwei, CHENG Xiang, ZHOU Wei, HAO Weifeng, XIAO Haibin, CHEN Hongjie, YANG Kui. Application of ground SAR in landslide deformation monitoring[J]. Bulletin of Surveying and Mapping, 2022, 0(7): 60-63.

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地基SAR在滑坡形变监测中的应用

Application of ground SAR in landslide deformation monitoring

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