Precision estimation and geomorphological analysis based on the DEM generated by InSAR： Taking Damxung-Yangbajain area as an example-中国Betway体育网页登陆

摘要 Digitalelevationmodel(DEM)canbegeneratedbyinterferometricsyntheticapertureradar(InSAR).Inthispaper,theinterferometricprocessingandanalysesarecarriedoutforDamxung-YangbajainareainTibet,usingapairofEuroperemote-sensingsatellite(ERS)-1/2tandemSARimagesacquiredon6and7April1996.AportionoftheIn-SAR-derivedDEMisselectedandcomparedwiththe1:50000DEMtodeterminetheprecisionoftheInSAR-derivedDEM.Thecomparisonindicatesthattherootmeansquarederrors(RMSE),whichareusedtoevaluateerror,areabout35,60,10,and15minthestudiedarea,mountainousarea,basinareaandnear-faultarea,respectively,suggestingthatobviouserrorsaremainlyinmountainousarea.Besides,thelimitationofInSARtechnologytogenerateDEMisanalyzed.OurinvestigationshowsthatInSARisaneffectivetoolingeodesyandanimportantcomplementtofieldsurveyinginsomedangerousareas.

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Precision estimation and geomorphological analysis based on the DEM generated by InSAR： Taking Damxung-Yangbajain area as an example

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