雷达系统分析chapter-three.ppt

RadarSystemsAnalysisandDesignUsingMATLAB2025/5/29NationalLabofRadarSignalProcessingZhangJuan(张娟)jzhan校区新科技楼1509LiuNan(刘楠校区新科技楼1509

TableofContents2025/5/29NationalLabofRadarSignalProcessingP2Chapter1:RadarFundamentalsChapter2:SignalProcessingChapter3:ContinuousWaveandPulsedRadarsChapter4:RadarDetectionChapter5:RadarWaveformsAnalysisChapter6:MatchedFilterandtheRadarAmbiguityChapter7:PulseCompression

TableofContents2025/5/29NationalLabofRadarSignalProcessingP3Chapter8:RadarWavePropagationChapter9:ClutterandMovingTargetIndicator(MTI)Chapter10:RadarAntennasChapter11:TargetTrackingChapter12:SyntheticApertureRadar(optional)Chapter13:RadarCrossSection(optional)

3.1.FunctionalBlockDiagramofContinuousWave(CW)Radar2025/5/29NationalLabofRadarSignalProcessingP4

3.2.CWRadarEquationTheNBFbank(Dopplerfilterbank)canbeimplementedusingaFastFourierTransform(FFT).ThedwellintervaldeterminesthefrequencyresolutionIftheDopplerfilterbankisimplementedusinganFFTofsize,theeffectiveradarDopplerbandwidthis.Thefactor2isneededtoaccountforbothpositiveandnegativeDopplershifts.TheCWradarequationcannowbederivedfromthehighPRFradarequation2025/5/29NationalLabofRadarSignalProcessingP5

3.3.FrequencyModulationAnFMwaveformcanbeexpressedbyThephaseisgivenbywhereistheFMmodulationindexgivenbyistheradaroperatingfrequency(carrierfrequency),isthemodulatingsignal,isaconstant,and,whereisthepeakfrequencydeviation.2025/5/29NationalLabofRadarSignalProcessingP6

2025/5/29NationalLabofRadarSignalProcessingP7BesselfunctionUsingthecomplexexponentialFourierseriesMakethechangeofvariable,

2025/5/29NationalLabofRadarSignalProcessingP8

2025/5/29NationalLabof