A Case Study of Using External DEM in InSAR DEM Generation-中国Betway体育网页登陆

摘要 Syntheticapertureradarinterferometry(InSAR)hasbeenusedasaninnovativetechniquefordigitalelevationmodel(DEM)andtopographicmapgeneration.Inthispaper,externalDEMsareusedforInSARDEMgenerationtoreducetheerrorsindataprocessing.TheDEMsgeneratedfromrepeat-passInSARarecompared.Forsteepslopesandseverechangesintopography,phaseunwrappingqualitycanbeimprovedbysubtractingthephasecalculatedfromanexternalDEM.ItisaffirmativethattheabsoluteheightaccuracyoftheInSARDEMisimprovedbyusingexternalDEM.Thedataprocessingwasundertakenwithouttheuseofgroundcontrolpointsandothermanualoperation.

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A Case Study of Using External DEM in InSAR DEM Generation

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