合成孔径雷达原理与应用讲座[]（synthesis aperture radar principle and application lecture []）

《合成孔径雷达原理与应用讲座[]（synthesis aperture radar principle and application lecture []）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、合成孔径雷达原理与应用讲座[1]（Synthesisapertureradarprincipleandapplicationlecture[1]）Syntheticapertureradarinterferometry-principle,developmentandapplication-LiaoMingrawNationalkeylaboratoryofsurveyingandmappingremotesensinginformationengineering(wuhanuniversity))liao@whu.edu.cnMay13,2010Whatisasynthetica

2、pertureradar(SAR).Syntheticaperture.ActiveimagingsensorSARimage-cityThecitymachinefieldSARimage-firemountainSARimage-isthmusThevalleyWhyuseSAR?OpticalimageofSARimagelikeWhenallday.Theall-weather.Phaseinformation(interferometry,InSAR)SARinterferencemeasurement(InSAR)Thegroundelevationinformatio

3、nwasextractedusingtwoimagingdistancesandorbitalparametersRemotesensing+measurement=>imagingTechnicalgeometryofInSARtype222R)..rB2rb(sin(rd)thetaalpha+.=CoszHrthetaequals.FrominterferencetodigitalelevationmodeltypeetnaThetypicaluseofInSARtechnologywithSpaceshuttleradarmappingscheme(SRTM)11dayst

4、ogetmostofthedigitalheightofthesurfaceoftheearth'ssurfacetype.Theresolutionis30mandtheelevationaccuracyis16mSRTMDEMinstance(China,Tibet)Eastern-center.tibet(Xizang,China)GTOPO30,USGSSRTMDEMPerspectivewithLandsatOverlay,MountKilimanjaro,TanzaniaDifferentialinterferometry(d-insar)Measuringsurfac

5、echangeBamseismicsurfacetransformationaTwolimitationsofd-insartechnology:1.TimeforcoherenceTwolimitationsofd-insartechnology:2.AtmosphericeffectPermanentscatteringtechnique(ps-insar)Detectingstabilitypoints(PSpoints).TocalculatetheatmosphericeffectatthePSpointandestimatethedeformationrateAppli

6、cationofPStechnology-fieldsettlementApplicationofPStechnology-landslidemonitoringApplicationofPStechnology-theurbansurfacemodelResearchprogressinInSARtechnology.Studyonurbansurfacesubsidencemonitoring.Studyongeologicalhazardmonitoringinnon-urbanareas.Advancesinhigh-resolutionInSARimagingstudie

7、sPARTa.citysurfacesettlementmonitoringTaketheShanghaiareaforexampleThegroundsinksdropInChina,landsubsidenceisaprominentgeologyinmanycities,especiallyincoastalcitiesThedisasterWiththedevelopmentofpopulationandeconomy,thisproblemgradually