资源描述：
《DigitalElevationModelGenerationAndItsApplicationIn数字高程模型生成和应用》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、INTERNATIONAL JOURNAL OF GEOMATICSAND GEOSCIENCESVolume 1, No 1,2010© Copyright 2010 All rights reserved IntegratedPublishing services ResearchArticleISSN0976– 4380DigitalElevationModelGenerationAnd ItsApplicationInLandslide StudiesUsingCartosat1 12S.Suganthi,K
2、.Srinivasan 1.M.EGeoInformatics,IRS,AnnaUniversity 2.Scientist‘C’,InstituteofRemoteSensingAnnaUniversity,Chennai geoamethyst@gmail.comABSTRACTThisstudyinvestigatesand demonstratesthe state ofRemote sensing techniquesfordetailed landslide hazard assessmentapplic
3、able to large areas.Sincethe mostcommonmethodsoflandslide susceptibilityassessmentusing weighted overlayare heavilydependenton3dimentionalterrainvisualizationand analysisstereosatellite imagefromthe CARTOSAT1 high resolutionimageryare used forthisstudy.However,
4、ifthe DEMisaccurate and detailed enough to show minorchange interrainheight.CARTOSAT1 stereo imagesare usuallyprovided with the (RPC) whichrepresentthe relationship betweenthe imagesand objectspace.Digital photogrammetric and GIS(Geographic informationsystem)wi
5、delyused in terrainmapping purpose.Increased the demand ofmapsinvarioussectorssuchresourcemanagement,engineering sectorsinplanning and developmentalpurpose.The advantageofDEMgenerationisa very usefulforheightinformation.The availabilityofhighresolutionsatellite
6、 imagery,suchasCARTOSAT1 hasopened new possibilitiesforterrainparameter evaluation.IndianRemote Sensing SatellitesCARTOSAT1 carryPAN camera,providing highresolution(2.5 m)Stereoimageryofthe earth’ssurface.DEMgeneratedfromstereo datahasbeenvalidatedusing ground
7、controlpoints(GCPs)with referenceDEM.which isused forevaluating the terrainparameterssuchaselevation,slope,contour,drainagepattern,and thematic mapsofgeologyand geomorphologylineamentland use and soilmap. These parametersare required asinputtoapplicationssuchas
8、landslide susceptibilityanalysis.The spatialrelationship betweenlandslideoccurrence and factorsinfluencing landslidesare assessed. Finally,Landslide susceptibilitymap willpr
