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1、摘要摘要雷达干扰与抗干扰是一对矛盾体，它们相互制约、相互促进、不断发展。随着大规模集成电路与计算机技术的在雷达领域的应用，现代雷达普遍采用匹配接收和相关处理算法，使得传统的干扰手段收效甚微。因此，相参干扰技术成为雷达干扰领域的研究方向。数字射频存储器是利用高速模数转换器将侦收到的雷达信号转换为数字信号，然后对数字信号采样、存储、处理并转发，以产生与原雷达信号相参的干扰信号。数字射频存储器的干扰效果已经在工程实践中得到验证，已经成为大部分现代干扰系统的核心部件。本文从数字射频存储器的原理、量化方式及实现结构、性能指标几
2、个方面进行了详细的论述。分析了几种量化方式的优缺点，并结合某型装备的研制需要设计了一套基于数字射频存储器的基带数字化干扰源。该干扰源的设计方案充分考虑了任务指标和器件水平，摒弃了传统的正交双通道结构，采用单通道量化模式，并引入DSP模块作为核心运算部件，具有结构简单、实时性高的优点，实现了对宽带雷达信号的干扰。并且考虑到标准化的问题，该干扰源采用CPCI标准，欧式插卡结构，具有较高的通用性。关键词：数字射频存储器雷达干扰高速数模转换器基带数字化干扰源AbstractAbstractRadarjammingandant
3、i-jammingisacontradiction,whichrestrict,promoteanddevelopwitheachother.WithLSIandcomputertechnologyappliedinthefieldofradar,matchingreceivingandcorrelationprocessingalgorithmsareemployedinmodernradar,makingtraditionalmeansofjammingbarelyeffective.Therefore,thec
4、oherentjammingtechnologybecomesthedirectionofresearchonjamming.DigitalRFmemoryconvertsthereceivingradarsignalintodigitalsignal,usinghigh-speedanalog-to-digitalconverter.Thenthedigitalsignalissampled.stored,processedandtransmittedsothatsignalscoherentwiththeorig
5、inalradarsignalscanbegenerated.TheeffectofjammingusingdigitalRFmemoryhasbeenverifiedinengineeringpractice,anddigitalRFmemoryhasbecomethecorecomponentinmostmodernjammingsystem.Inthiswork,theprincipleofdigitalRFmemory,quantization,achievestructuralandperformancea
6、rediscussed.Theadvantageanddisadvantageofdifferentmeansofquantizationisanalysis.Combinedwiththedevelopmentneedofacertaintypeofequipment,asetofbase-banddigitaljammingsourcewithdigitalRFmemoryisdesigned.Inthesolutionofjammingsource,taskindicatorsanddevicelevelare
7、fullyconsidered,thetraditionalorthogonaldual-channelstructureisabandoned,single-channelquantitativemodeisused,andaDSPmoduleisemployedasthecorecomputingcomponent.Thissolutionhasadvantagesofsinglestructureandhighinstantaneity,implementsjammingonwide-bandradarsign
8、als.Takingproblemofstandardizationintoaccount,ContinentalcardstructureinCPCIstandardisemployedinthejammingsource,whichmakesthejammingsourcehaveahighversatility.Keywords:DRFM
