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ID:40357209
大小:587.50 KB
页数:6页
时间:2019-07-31
《A Novel Pulse TOA Analysis Technique for Radar Identification_00705881》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.INTRODUCTIONInelectronicwarfare,electronicsupportmeasureANovelPuseTOAAnalysis(ESM)receiversplayacentralrolebyinterceptingsignalsfromtheenvironmenttheyaredeployedinandTechniqueforRadarmeasuringtheirphysicalparameters.Amongtheseparametersthetimeofarrival(TOA)isperhapstheIdentificationmostimportant
2、becausenotallelectronicwarfare(EW)receiverscanmeasureotherssuchastheangleofarrival,frequency,etc.Furthermore,theaccuracyofmeasurementofTOAisusuallymuchbetterthananyotherparameter.ForpulsedemitterstheobservedP.S.RAY,Member,IEEETOAdataarediscretevaluesforeachindividualDefenceScienceandTechnologyOrga
3、nisationemitterdefiningitscharacteristicpulsetrain.TheAustraliaprocessingofthedataforsortingthepulsespresentintoindividualemittersisknownasdeinterleaving.InpracticeusuallyalibraryofknownemittersisusedAnewprocessingtechniqueispresentedforidentifyingforfurtheridentification.Itisworthwhilenotingthata
4、lthoughsomestudiesexistintheopenliteratureindividualpulsetrainsinabufferloadofpulsetime-of-arrivalatthesystemlevel[l],verylittleinformationis(TOA)datafromradarwarningreceiversetscurrentlyinuseforavailableonalgorithmicdevelopmenttodealwiththeelectronicwarfare(EW).Themethodisbasedonthenumericaldeint
5、erleavingproblem.characteristicsofthematrixofthedifferencesoftheTOAdataIfoneweretodeinterleaveonlyonthebasisofthepoints.Inparticular,forauniformpulserepetitioninterval(PRI)recordedTOAdataset,themethodatdisposalwouldemitter,thismatrixisasymmetricalharmonicToeplitzmatrixthebetodrawallpossibleconclus
6、ionsfromtheATOAinverseofwhichhasbandedtridiagonalform.Thisformleadsmatrixdefinedbyits(i,j)thelementastoanestimatorforthePRIintermsofthetraceoftheinvertedmatrix.ATOA(i,j)=ITOA(j)-TOA(I‘)I(1)whereNdenotesthenumberofpulses(positiveinteger)takenintoaccountand15i5N,15j5N.Normally,histogrammingofthedata
7、isundertakeninordertofindthe“patterns”presentoftheemitters(whicharee.g.,uniformpulserepetitionintervals(PRIs),jitteredPRIs,staggeredPRIs[2]).Inthehistogrammingtechniquetherearealwayscertainambiguousparameterssuch
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