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基于步进频连续波体制的Ku导航雷达系统设计.docx

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基于步进频连续波体制的Ku导航雷达系统设计 Title:DesignofKu-BandNavigationRadarSystemBasedonFrequencySteppedContinuousWaveRegime Abstract: ThispaperpresentsthedesignofaKu-bandnavigationradarsystembasedonthefrequencysteppedcontinuouswave(FSCW)regime.TheFSCWtechniqueoffersadvantagessuchashighrangeresolutionandlongobservationrange,makingitsuitedfornavigationandtargettrackingapplications.Thesystemarchitecture,transceiverdesign,andsignalprocessingalgorithmsarediscussedindetail.Simulationresultsdemonstratetheeffectivenessoftheproposedsysteminachievingaccuratetargetlocalizationandtrajectoryestimation. 1.Introduction Navigationradarplaysacrucialroleinmaritimeandaviationindustriestoensuresafeandreliabletransportation.Withtheadvancementsinradartechnology,awiderangeofradarsystemshavebeendevelopedforvariousapplications.Inthispaper,wefocusonthedesignofaKu-bandnavigationradarsystemthatutilizestheFSCWregime. 2.SystemArchitecture Theproposednavigationradarsystemconsistsofseveralkeycomponents:theantennasubsystem,transceiversubsystem,signalprocessingsubsystem,anddisplayunit.Theantennasubsystemconsistsofadirectionalantennafortransmittingandreceivingradarsignals.ThetransceiversubsystemgeneratesFSCWsignalsandamplifiesthetransmittedsignalswhilereceivingandamplifyingthereflectedsignals.ThesignalprocessingsubsystemperformsrangeandDopplerprocessing,targetdetectionandtracking,andtrajectoryestimation.Thedisplayunitprovidesavisualrepresentationofthedetectedtargetsandtheirtrajectories. 3.TransceiverDesign ThetransceiversubsystemisresponsibleforgeneratingandamplifyingtheFSCWsignalsandprocessingthereceivedsignals.Thefrequencysteppingisachievedbyusingavoltage-controlledoscillator(VCO)andafrequencysynthesizer.ThegeneratedFSCWsignalsareamplifiedbyapoweramplifierbeforebeingtransmitted.Duringthereception,thereflectedsignalsareamplifiedbyalow-noiseamplifierandfedintothesignalprocessingsubsystem. 4.SignalProcessingAlgorithms Thesignalprocessingsubsystemappliesvariousalgorithmstoextractusefulinformationfromthereceivedsignals