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《Adaptive detection of wideband radar range spread targets with range walking in clutter》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、I.INTRODUCTIONAdaptiverangespreadtargetdetectionforwidebandradarinaclutterbackgroundisreceivingAdaptiveDetectionofincreasingattentionintheradarcommunity.WhenradartransmitswidebandwaveformsanditsrangeWidebandRadarRangeresolutionissmallerthanthetargetsize,thetargetreturnso
2、ccupymultiplecontiguousrangecells,SpreadTargetswithRangewhichisreferredtoasahighrangeresolutionprofile(HRRP).ThetargetiscalledtherangespreadtargetWalkinginClutterintheliterature.Inclutterenvironments,widebandradarwithwell-designeddetectorscanobtainimprovedtargetdetection
3、performancecomparedtothatofnarrowbandradar,becausehighrangeresolutionreducestheamountoftheenergyperrangeFENGZHOUDAIcellbackscatteredfromthedistributedclutterandHONGWEILIU,MemberIEEEPENGLANGSHUI,MemberIEEEresolvedtargetscatterershavelessradarcross-sectionSHUNJUNWU,SeniorM
4、ember,IEEEfluctuationthananunresolvedtarget[1].ItwasXidianUniversityalsopointedoutthatwidebandradarachievestheChinabestdetectionperformancewhenthebandwidthoftransmittedwaveformsjustresolvetheindividualdominantscatterersofatarget.GaussianassumptionbasedonthecenterlimitInt
5、hispaper,weaddressdetectionofrangespreadtargetstheoremisunsuitableformodelingwidebandradarwithrangewalkinginpartiallyhomogeneousclutter,whichisclutter.Thewidelyusednon-Gaussiancluttermodeloftenencounteredinwidebandradar.Byconsideringthetargetforwidebandradarismodeledasth
6、eproductofarangewalkingeffect,atargetreturnsmodelisproposedthatspatial-temporal,slowlyvarying,nonnegativerandomrepresentstherelationshipbetweenDopplerfrequencyandrangevariableandarapidlyvarying,complexGaussianfrequency.Basedonthis,ageneralizedmatchedsubspacedetectorvecto
7、r.Thenonnegativerandomvariableisreferredto(GMSD)andageneraladaptivesubspacedetector(GASD)areasthetexturecomponent,andthecomplexGaussianproposedinthefrequencydomain.Moreover,toeliminateexcessvectorisconsideredthespecklecomponent[2].Theintegrationlossintroducedbythemismatc
8、heddetectionwindowpartiallyhomogeneousclutterisaspecialinstancesize,twoimproveddetectorsareproposedinra
