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:1001-2486(2010)03-0109-06赵菲,王生水,柴舜连,刘海涛,毛钧杰(,410073):,LSX,,,,:;;;;(DRFM):TN957:ADesignandIntegrationoftheFrontEndRFfortheRadiatedRadarTargetSimulatorZHAOFei,WANGShengshui,CHAIShunlian,LIUHaitao,MAOJunjie(CollegeofElectronicScienceandEngineering,NationalUniv.ofDefenseTechnologyChangsha410073,China)Abstract:ThefrontendRFforradiatedradartargetsimulatorwasdesignedandintegratedinthispaper.ThissimulatorwasoperatedontheLSXthreebands,anditsupportedtheCWandpulseoperation.Itgeneratedmultitargetsinhighprecision.TheplugmodulestructuredesignimprovedtheEMCandtheextensionperformanceoftheRFfrontend.Themeasuredresultsofthesystemarebetterthanthetarget.Furthermore,thisRFfrontendsupportstheradarsimulatorfinishthetargetsimulatingfortherealradarsuccessfully,whichverifiestheperformanceofthisradarsimulator.Keywords:radarsimulator;receiver;transmitter;frequencysynthesizer;DRFM,[1]:(),,,[1]:KORElectronics(DigitalRadarEnvironmentSimulator),HPFASS(FrequencyAgileSignalSimulator)X2090:6011994PD;2000[2]10,,LSX,;,;,111(DataRadioFrequencyMemory,DRFM):2010-02-05:(1983),,323JOURNALOFNATIONALUNIVERSITYOFDEFENSETECHNOLOGYVol.32No.32010DRFM,11Fig.1Radiatedradartargetsimulatorsystemblockdiagram,,DRFM;DRFM,,,;,,,,,:(1):;(2):L200MHz,S14GHz,X22GHz;(3):(406)MHz;(4):30~10000Hz;:03~300s;(5):60dB;:80dB;(6)::240m~360km;:!10m;(7):-2000~2000ms;:!06ms12LSX,,,2LSX,,,,,DRFM;,DRFM,3,MMIC[4-5]DRFM,LSX,2,,,;,;,DRFM;,,110201032Fig.2Simulatorreceiversystemblockdiagram3Fig.3Simulatortransmittersystemblockdiagram21[6]:LSX,LO1,,570MHz,,,LO2(530MHz)40MHz12MHz;,DRFMLO2570MHzLO1SX,,S14GHz,X22GHz,,,S4,X622LSXLS,420MHz,14~28GHz,,,LSX11GHz12GHz,,LS173~313GHz,X793~1013GHz,XLS-102dBcHz@1kHz;X-102dBcHz@1kHz;65dBc;55dBc111,:4LSFig.4LSbandfrequencysynthesizersystemblockdiagram23,60dB,80dB6bit,05dB,315dB,:2,663dB1dB;1,2,12945dB05dB245DRFMFig.5DRFMprincipleblockdiagramDRFM,,[7-10]DRFMAD(DDC)(DUC)DA,5AD,ADAD14AD9254,150MSPS(DDC),IQDDCTIGC5016,160MSPS(DUC)IQDA,FPGA,,,3311611DRFM,LSX,DRFM,,;,,66,111DRFM21,11220103DRFMLSX,DRFM,,6(a)Fig.6(a)FrontviewofsimulatorRFfrontend6(b)Fig.6(b)BackviewofsimulatorRFfrontend32321收发插件性能测试LSX:(1):-30~+30dBm;(2):0dBm;(3),;(4)12MHz,1dB,7(a):(1):80dB;(2):30dBm;(3),;(4)12MHz,1dB,7(b)7(a)Fig.7(a)IFbandwidthofreceiver7(b)XFig.7(b)RFbandwidthofXbandtransmitter322目标速度范围与精度测试,,1,1Tab.1Measureresultsoftherangeandprecisionfortargetvelocity(ms)(Hz)(ms)(ms)1086(13GHz)9923007720001733319999620038-2000-17334-20000770077323目标距离范围与精度测试,,,2,113,:2Tab.2Measureresultsoftherangeandprecisionfortargetdistance(km)(s)(km)(m)0856000801313135900272135000000003602400273599997-03004,25m,,8(a)8(b)X,140m,300ms,1000ms,2000ms,:2998ms,9993ms,19996ms,07%240m,91000ms,8(c),8(a)Fig.8(a)Operatingsimulator8(b)Fig.8(b)SimulatorRFfrondend8(c)Fig.8(c)Simulatedtargetsshownontheradar5,LSX,,,,,,RCS,,:[1],,,.DDS[J].,2005,27(9):1498-1499.[2],.DSP[J].,2007,24(9):285-288.[3].[D].:,2007:1-3.[4],,.[M].:,2006:2-3.[5],.[M].:,2005:30-31.[6].[M].:,2006:70-74.[7]HerskovitzD.ASamplingofDigitalRFMemories[J].JournalofElectronicDefense,1998(3):51-54.[8],,.FPGA[J].,2006,27(6):870-872.[9]PringP,JamesGE,HayesD,etal.ThePhasePerformanceofDigitalRadioFrequencyMemories(DRFMs)[C]IEESecondInternationalConferenceonAdvancedADandDAConversionTechniquesandtheirApplications,Cambridge,England,1994:18-23.[10],,,.DRFM[J].,2009,17(8):1616-1619.11420103