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北方民族大学学士学位论文论文题目:基于DSP雷达中频信号处理板的设计——软件部分院(部)名称:电气信息工程学院学生姓名:郭南南专业:信息工程学号:20050045指导教师姓名:郑华论文提交时间:2009年5月16日论文答辩时间:学位授予时间:北方民族大学教务处制I摘要DSP芯片，也称数字信号处理器，是一种具有特殊结构的微处理器。DSP芯片的内部采用程序和数据分开的哈佛结构，具有专门的硬件乘法器，广泛采用流水线操作，提供特殊的DSP指令，可以用来快速的实现各种数字信号处理算法。DSP技术已成为人们日益关注的并得到迅速发展的前沿技术，在雷达数字化过程中得到了广泛应用。雷达中频信号处理板根据不同类型的雷达逼真地模拟包含雷达目标信息和环境信息的中频回波信号。根据工程需求分析了雷达中频信号处理板的机理,以高性能DSP数字信号处理模块为核心介绍了通用型雷达中频信号处理板的组成结构及性能指标,对主要的DSP模块任务分配及工作流程进行了介绍。雷达中频信号处理板具有较好的设备通用性和逼真度，在训练装备研制中有较好的应用前景。雷达中频信号处理板包括超高速A/D转换器，正交信号产生器，下变频器，HDF高抽取滤波器，FIR滤波器，格式变换器，串并转换器，数字信号处理器，接口电路，EPROM和并行总线接口等构成。在软件实现方面，在CCS集成开发环境中实现FFT和FIR滤波算法，满足雷达接收机工作要求。在硬件设计的基础上，根据TMS320C3XEVM板结构特点，实现信号处理算法--FFT等。关键词:雷达中频信号;DSP;FFTIIAbstractDSPchips,alsoknownasdigitalsignalprocessor,amicroprocessorhasaspecialstructure.DSPchip'sinternaluseofprogramsanddataseparatefromtheHarvardarchitecture,withdedicatedhardwaremultiplier,extensiveuseofpipeliningtoprovidespecialDSPinstructionsthatcanbeusedtoachieveavarietyoffastdigitalsignalprocessingalgorithms.DSPtechnologyhasbecomeanincreasingconcernandtherapiddevelopmentofcutting-edgetechnology,intheprocessofdigitalradariswidelyused.IFradarsignalsimulatorbasedondifferenttypesofradarsimulaterealisticradartargetcontainsinformationandenvironmentalinformationIFechosignals.AccordingtoananalysisofthedemandforradarIFsignalsimulatormechanismtohigh-performanceDSPdigitalsignalprocessingmodule,introducedatthecoregeneral-purposeradarIFsignalsimulatorstructureandthecompositionofperformanceindicators,themaintaskoftheallocationofDSPmodulesandworkflowintroduced.RadarIFSignalSimulatorwithbetterequipment,versatilityandfidelityoftrainingequipmentinthedevelopmentofabetterfuture.IFradarsignalprocessingboard,includingultra-high-speedA/Dconverter,quadraturesignalgenerator,theinverter,HDFhighdecimationfilter,FIRfilters,formatconverters,seriesandconverters,digitalsignalprocessor,interfacecircuit,EPROMandparallelbusinterfaces,etc..Insoftware,intheCCStoachieveintegrateddevelopmentenvironmentFFTandFIRfiltertomeettherequirementsoftheradarreceiver.InhardwaredesignbasedontheTMS320C3XEVMboardinaccordancewiththestructuralcharacteristicsofsignalprocessingalgorithms-FIRfilteringandFFTandsoonKeywords:radarIFsignalsimulation;DSP;FFTIII目录摘要......................................................................................................................................IAbstract.............................................................................................................................II前言...................................................................................................................................1第1章DSP系统概述......................................................................................................21.1DSP...............................................................................................................................21.1.1DSP发展历史............................................................................................21.1.2DSP芯片的应用........................................................................................21.1.3DSP系统的特点........................................................................................2第2章雷达中频信号处理板的的组成...........................................................................42.1模块组成......................................................................................................................42.2数字信号处理模块及处理流程：..............................................................................52.3基于DSP的雷达中频信号处理系统结构设计..........................................................62.4雷达中频信号处理板...............................................................................................7第3章TMS320C3xDSP及软件设计开发...................................................................123.1TMS320C3X的硬件资源............................................................................................123.1.1丰富的指令系统......................................................................................133.1.2灵活的程序控制......................................................................................143.1.3流水线操作..............................................................................................153.1.4寻址方式多样..........................................................................................163.2软件开发....................................................................................................................133.2.1程序的编译、汇编和连接.....................................................................143.2.2COFF文件到HEX文件的转换..............................................................14第4章基于TMS320C3XEVM板的FFT.............................................................184.1FFT算法简介............................................................................................................18IV4.2主程序........................................................................................................................224.3汇编程序...........................................................................................