利用时间序列ALOS-2 PALSAR数据监测输电通道地表形变  

Using Time Series ALOS-2 PALSAR Data to Monitor the Surface Deformation of the Transmission Channel

作　　者：李宏伟 谭衢霖[1,2] 谢酬[3] LI Hongwei;TAN Qulin;XIE Chou(School of Civil Engineering,Beijng Jiaotong University,Beijing 100044,China;Institute of Spatial Information for Line Engineering,Beijng Jiaotong University,Beijing 100044,China;Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]北京交通大学土木建筑工程学院,北京100044 [2]北京交通大学线路工程空间信息研究所,北京100044 [3]中国科学院遥感与数字地球研究所,北京100094

出　　处：《测绘与空间地理信息》2021年第6期46-50,53,共6页Geomatics & Spatial Information Technology

基　　金：国家重点研发计划(2018YFC0809402)资助。

摘　　要：有效监测西南地区输电线路的地表形变对我国电网的安全平稳运行具有重要意义。本文以特高压输电通道沿线为研究区域,基于时间序列卫星雷达差分干涉测量技术,利用2016年8月15日至2017年10月9日22景5 m分辨率升轨的ALOS-2 PALSAR雷达卫星数据,采用PS-InSAR处理方法,在植被覆盖茂密的西南地区对某输电通道滑坡灾害开展地表形变监测研究。结果表明,在距离输电线杆塔约4.4 km的下沟坪村附近发现明显地表变形,最大的滑坡点形变速率达到了30 mm/year。监测结果与现场核查具有很好的一致性,验证了基于时间序列ALOS-2 PALSAR数据在输电通道变形监测领域的可靠性,在复杂山区的形变监测方面具有很好的应用前景。Effectively monitoring the surface deformation of transmission lines in Southwest China is of great significance to the safe and stable operation of my country’s power grid.This paper takes the UHV transmission channel as the research area,based on the time series satellite radar differential interferometry technology,using the ALOS-2 PALSAR radar satellite with a 22-meter 5 meter resolution orbit from August 15,2016 to October 9,2017.Data,using PS-In SAR processing method,carried out surface deformation monitoring research on a transmission channel landslide disaster in southwestern areas with dense vegetation cover.The results show that obvious surface deformation is found near Xiagouping Village,about 4.4 km away from the transmission tower,and the maximum landslide deformation rate reaches 30 mm/year.The monitoring results are in good agreement with the on-site verification,which verifies the reliability of the ALOS-2 PALSAR data based on the time series in the deformation monitoring of the transmission channel and has a good application prospect in the deformation monitoring of complex mountainous areas.

关 键 词：时间序列 输电通道 复杂山区 地表形变 

分 类 号：P25[天文地球—测绘科学与技术] TB22[天文地球—大地测量学与测量工程]