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1、IEEEGEOSCIENCEANDREMOTESENSINGLETTERS,VOL.9,NO.6,NOVEMBER20121079Through-WallDetectionofHumanBeingsMovementbyUWBRadarJingLi,StudentMember,IEEE,ZhaofaZeng,JiguangSun,andFengshanLiuAbstractUltrawideband(UWB)radartechnologyhasFurthermore,sinceradiatedpulsedsignalsoccupyextremelyemergedaso
2、neofthepreferredchoicesforthrough-walldetectionbroadbandwidthsrelativetothecenterfrequency,itisben-duetoitshighrangeresolutionandgoodpenetration.Theeficialforbetterseparatingmultipletargetsincomplexenvi-resolutionisaresultofhighbandwidthofUWBradarandronmentdetection.Comparedwithotherrad
3、arsystems,thehelpfulforbetterseparationofmultipletargetsincomplexenvironment.DetectionofhumantargetsthroughawallisremarkablecharacteristicofUWBradaristhehighspatialreso-interestinginmanyapplications.Onesignificantcharacteristiclutionasaresultofemploymentofultranarrowpulses[9],[10].ofhum
4、anistheperiodicmotion,suchasbreathingandlimbItnotonlyallowsthedetectionofcloselypositionedtargetsmovement.Inthisletter,weapplytheUWBradarsysteminbutalsoprovidesinformationabouttheshapeandthematerialthrough-wallhumandetectionandpresentthemethodsbasedoncontentoftargets.Astheemployedbandw
5、idthisincreased,fastFouriertransformandStransformtodetectandidentifythehumanslifecharacteristic.Inparticular,wecanextractthetheseadvantagesbecomemoreapparent.Moreover,theUWBcenterfrequenciesoflifesignalsandlocatethepositionofhumanpulsesareinherentlyshort,andtheshortpulsesspreadtheirtar
6、getsfromexperimentaldatawithhighaccuracy.Comparedenergyoverabroadfrequencyrangeandhaveverygoodwallwithotherresearchstudiesinthrough-walldetection,thisletterpenetrationcharacteristics[11].isconcentratedintheprocessingandidentifyingofthelifesignalOnesignificantcharacteristicofhumanisthepe
7、riodicmo-understrongclutter.Ithasahighsignal-to-noiseratioandsimplertoimplementincomplexenvironmentdetection.Wecantions.Radarsignalswhichreflectedfromhumantargetscon-usethemethodtosearchandlocatethesurvivortrappedundertainbiometricinformationrelatedtoperiodiccontractionofthebuildingde
