a new short-wave infrared swir method for quantitative water fraction derivation and evaluation with eos modis and landsat tm data

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1、1852IEEETRANSACTIONSONGEOSCIENCEANDREMOTESENSING,VOL.51,NO.3,MARCH2013ANewShort-WaveInfrared(SWIR)MethodforQuantitativeWaterFractionDerivationandEvaluationWithEOS/MODISandLandsat/TMDataSanmeiLi,DonglianSun,YunyueYu,IvanCsiszar,AnthonyStefanidis,andMitchellD.GoldbergAbstractAquantitativeme

2、thodisdevelopedforderivingwa-highlyaccuratewaterfractionfromcoarse-tomedium-resolutionterfractionfromcoarse-tomedium-resolutionsatellitedatawithsatellitedata.visibletoshort-waveinfrared(SWIR)channelsbasedonthelinearIndexTermsDynamicnearestneighborsearching(DNNS)mixturetheory.Themethoduses

3、aSWIRchannel(1.64μm)method,Moderate-ResolutionImagingSpectroradiometerbyassumingthatthewater-surface-leavingradianceinthischan-(MODIS),short-waveinfrared(SWIR)channel,waterfraction.nelisinsignificantandisthuslessaffectedbywatertypesandwaterdepththannear-infrared(NIR)channelsforinlandwaterI

4、.INTRODUCTIONbodies.Foramixedwaterpixel,adynamicnearestneighborsearching(DNNS)methodisusedtofindthenearbylandpixelsLOODandstandingwaterbodymonitoringusingsatellitetodeterminetheaveragelandreflectance.ThenearbypurewaterFdataisanimportantresearchtopicinremotesensingpixelswithasimilarwatertype

5、tothesubpixelwaterportionofthemixedwaterpixelarefounddynamicallytoderivetheapplications.Floodingisarguablyoneofthecostliestnaturalaveragewaterreflectance.TheaveragereflectanceintheSWIRdisastersinaglobalscale,whilethedynamicchangeofachannelfrombothpurelandpixelsandwaterpixelsisusedtostanding

6、waterbodysizeisanindicatorofshort-termregionalcalculatethewaterfractionfromalinearmixturemodel.Theclimatechange.Inmanycountries,flooding/standingwaterdevelopedmethodisappliedtoModerateResolutionImagingbodymonitoringisadailyremotesensingoperationandplaysSpectroradiometer(MODIS)dataandshowsp

7、romisingresults.High-resolutionsatellitedatafromtheThematicMapper(TM)areasignificantroleindisasterevaluationandclimatediagnosis.AusedtoevaluatethewaterfractionderivedfromMODIS.Duringvarietyofstudiesonwaterdetectionandwaterfractioncalcu-pixel-to-pixelwaterfractioneval