汶川地震堰塞湖的雷达遥感识别研究

英文篇名：Identification Research of Barrier Lake in Wenchuan Earthquake Using Radar Remote Sensing
中文刊名：水电能源科学
英文刊名：Water Resources and Power
作者：史旭 ; 周扬
英文作者：SHI Xu1 ZHOU Yang2(1.Department of Geographical Information Science ; Nanjing University ; Nanjing 210093 ; China ; 2.Department of Urban and Regional Planning ; Nanjing University ; Nanjing 210093 ; China)
中文关键词：Radarsat-1 ; 堰塞湖 ; 纹理特征 ; 水体提取 ; 雷达图像模拟
英文关键词：Radarsat-1 ; barrier lake ; texture character ; water extraction ; radar image simulation
出版日期：2009-10-25
机构：南京大学地理信息科学系;南京大学城市与区域规划系;
年：2009
期：05
出版单位：水电能源科学

摘要

针对雷达遥感能在各种天气条件下获取影像、在地震后灾情监测中相对于光学遥感具有特殊的优势,以汶川地区地震前后不同时期的Radarsat-1遥感影像为研究对象,依据雷达成像特点,通过选取适当的纹理特征进行水体分类提取,并通过DEM模拟雷达图像消除山体阴影对水体所造成的误分类,从而实现了对地震堰塞湖空间分布的提取,并在此基础上结合DEM分析且获取了堰塞湖的一些基本特征信息。
Radar remote sensing,as a kind of active remote sensing,working in all the weather conditions and all the time,plays an important role in monitoring disaster situations in the earthquake for the advantages it owns comparing with optical remote sensing.Based on the theory of radar imaging,barrier lake is extracted and analyzed in Radarsat-1 images to get the location and some basic characteristic information.First,classify water on texture characters,and then simulate radar image on DEM data,and finally,eliminate the influence of the hill shadows with the help of simulation image.

引文

[1]Curlander J C,Mcdonough R N.合成孔径雷达——系统与信号处理[M].韩传钊译.北京:电子工业出版社,2006.
    [2]Wiebe A J,Collins M,Pietroniro A.Radarsat FloodMapping in the Peace-athabasca Delta Canda[J].Cana-dian Journal of Remote Sensing,1998,24(1):69-79
    [3]Jin Y Q.A Flooding Index and Its Regional Thresh-old Value for Monitoring Floods in China fromSSMPI Data[J].International Journal of RemoteSensing,1999,20(5):1 025-1 030
    [4]Sharma P K,Chopra R,Verma V K,et al.Flood Man-agement Using Remote Sensing Technology:the Punjab(India)Experience[J].Inthernational Journal of Re-mote Sensing,1996,17(17):3 511-3 521
    [5]郑伟,刘闯,曹云刚,等.基于Asar与TM图像的洪水淹没范围提取[J].测绘科学,2007,32(5):180-181
    [6]杨存建,周成虎.利用RADARSAT SWA SAR和LANDSAT TM的互补信息确定洪水水体范围[J].自然灾害学报,2001,10(2):79-83
    [7]郭华东.雷达对地观测理论与应用[M].北京:科学出版社,2000.
    [8]杨存建,魏一鸣,陈德清.基于星载雷达的洪水灾害淹没范围获取方法探讨[J].自然灾害学报,1998,7(4):45-50