-
labview编写比较高级计算器
计算器labview较高级计算器（普通型和科学型较高级计算器）
- 2020-12-10下载
- 积分：1
-
微信公众号支付Dome（项目刚上线，把PayConfig替换成自己的就能运行）
用aspx.net做的微信公众号支付，把payConfig替换成自己的数据发布到微信公众平台自己配置的url就可以跑起来，哪里有问题可以在下面评论或者加QQ358520859，如果这个dome没问题请给个满星好评。谢谢
- 2020-12-11下载
- 积分：1
-
CPLEX 调度例子
对于初学者而言，CPLEX相对比较陌生，本人将课程资源上传共享，希望对你有所帮助。
- 2021-05-07下载
- 积分：1
-
cad二次开发vba源代码
【实例简介】cad 从基础到高级，各种vba代码。分章节。
- 2021-11-14 00:38:26下载
- 积分：1
-
cpu设计实例-verilog
cpu设计实例-verilog,通过这个文档 你可以很快的入手如何设计一份8位的cpu,其中的指令码位16位什么是CPU?CPU即中央处理单元的英文缩写,它是计算机的核心部计算机进行信息处理可分为两个步骤1)将数据和程序(即指令序列)输入到计算机的存储器中2)从第一条指令的地址起开始执行该程序,得到所需结果,结束运行。CPU的作用是协调并控制计算机的各个部件执行程序的指令序列,使其有条不紊地进行。因此它必须具有以下基本功能a)取指令:当程序已在存储器中时,首先根据程序入口地址取出一条程序,为此要发出指令地址及控制信号b)分析指令:即指令译码。是对当前取得的指令进行分析,指出它要求什么操作,并产生相应的操作控制命令c)执行指令:根据分析指令时产生的操作命令形成相应的操作控制信号序列,通过运算器,存储器及输入/输出设备的执行,实现每条指令的功能,其中包括对运算结果的处理以及下条指令地址的形成将其功能进一步细化,可概括如下1)能对指令进行译码并执行规定的动作;2)可以进行算术和逻辑运算;3)能与存储器,外设交换数据4)提供整个系统所需要的控制尽管各种CPU的性能指标和结构细节各同出功能分析,可知任何一种内目部结构至少应包含下面这些部件:1)算术逻辑运算部件(ALU)2)累加器;3)程序计数器;4)指令寄存器,译码器;5)时序和控制部件RISC即精筲指令集计算机( Reduced instruction seComputer)的缩写。它是一种八十年代才出现的CPU,与一般的CPU相比不仅只是筒化了指令系统,而且是通过筒化指令系统使计算机的结构更加筒单合理,从而提高了运算速度。从实现的途径看, RISC-CPU与一般的CPU的不同处在于:它的时序控制信号形成部件是用硬布线逻辑实现的而不是采用微程序控制的方式。所谓硬布线逻辑也就是用触发器和逻辑门直接连线所构成的状态机和组合逻辑,故产生控制序列的速度比用微程序控制方式快得多,因为这样做省去了读取微指令的时间RISC_CPU也包括上述这些部件,下面就详细介绍一个筒化的用于教学目的的 RISC-CPU的可综合 Veriloghdl模型的设计和伤真过程RISC CPU结构RISC_CPI是一个复杂的数字逻辑电路,但是它的基本部件的逻辑并不复杂。可把它分成八个基本部件:1)时钟发生器2)指令寄存器3)累加器4) RISC CPU算术逻辑运算单元5)数据控制器6)状态控制罨D7)程序计数器8)地址多路器中各部件的相互连接关系1时钟发生器时钟发生器时钟发生器利用外来时钟信号米生成一系列时钟信号送往的其他部件。其中是外来时钟的八分频信号。利用的上升沿来触发控制器开始执行一条指令,同时信号还将控制地址多路器输出指令地址和数据地址。信号用作指令寄存器、累加器、状态控制器的时钟信号则用于触发算术逻辑运算单元。时钟发生器c1kgen的波形
- 2020-11-30下载
- 积分：1
-
效能评估理论、方法及应用
效能评估理论、方法及应用，高清带目录pdf，适合学习。
- 2021-05-06下载
- 积分：1
-
赛灵思FPGA-XC6SLX9最小系统资料
赛灵思的FPGA芯片最小系统板的原理及PCB，有兴趣的可以看一看
- 2020-11-27下载
- 积分：1
-
基于matlab虹膜识别源程序
基于matlab虹膜识别源程序,完整代码。
- 2021-05-07下载
- 积分：1
-
FAM和SSCA算法的matlab源程序-detection and identification of signal
FAM和SSCA算法的matlab源程序-detection and identification of signalFAM和SSCA算法的matlab源程序-detection and identification of signalDISCLAIMER NOTICEMTHIS DOCUMENT IS BESTQUALITY AVAILABLE. THECOPY FURNISHED TO DTICCONTAINED A SIGNIFICANTNUMBER OF PAGES WHICH DONOT REPRODUCE LEGIBLY.ilApproved for public release; distribution is unlimitedDETECTION AND IDENTIFICATION OF CYCLOSTATIONARY SIGNALSEvandro luiz da costaLieutenant Commander, brazilian NavyB.S., Instituto Militar de Engenharia, 1980Submitted in partial fulfillmentof the requirements for the degree ofMASTER OF SCIENCE IN ELECTRICAL ENGINEERINGANDMASTER OF SCIENCE IN ENGINEERING ACOUSTICSfrom theNAVAL POSTGRADUATE SCHOOLMarch 1996Author.Evandrodk da costaapproved byRQ求Ralph Hippenstiel, Thesis Co-AdvisorRoberto Cristi, Thesis Ca-AdvisoiHerschel. Loomis, Jr, hairmanDepartment of Electrical and Computer EngineeringArthony A. Atchley / ChairmanEngineering Acoustics Academic CommitteeABSTRACTPropeller noise can be modeled as an amplitude modulated(AM) signalCyclic Spectral Analysis has been used successfully to detect the presence ofanalog and digitally modulated signals in communication systems. It can also identithe type of modulation. Programs for Signal Processing based on compiledlanguages such as FORTRAN or C are not user friendly, and MATLAB basedprograms have become the de facto language and tools for signal processingengineers worldwideThis thesis describes the implementation in mAtlab of two fast methods ofcomputing the Spectral Correlation Density(SCD)Function estimate, the FFTAccumulation Method (FAM)and the Strip Spectral Correlation Algorithm( SSCA),toperform Cyclic Analysis. Both methods are based on the Fast Fourier transformFFT)algorithm. The results are presented and areas of possible enhancement forpropeller noise detection and identification are discussedTABLE OF CONTENTSINTRODUCTIONA MOTIVATION,P,中“····*s···:···:B BACKGROUNDC THESIS GOALSIL NOISE IN THE OCEAN··+A TYPES OF UNDERWATER NOISE25561. Ambient Noise番申2. Self noise3. Radiated noise8B RADIATED NOISE FROM SHIPS, SUBMARINES AND TORPEDOES.......8C PROPELLER NOISE10lI CYCLOSTATIONARY PROCESSING15A CYCLOSTATIONARIT15B THE CYCLIC AUTOCORRELATION FUNCTION (ACF)17C THE SPECTRAL CORRELATION DENSITY FUNCTION (SCD)18N. ESTIMATION OF THE SPECTRAL CORRELATION DENSITY FUNCTION23A FFT ACCUMULATION METHOD(FAM)25B STRIP SPECTRAL CORRELATION ALGORITHM(SSCA■D28V. EXPERIMENTAL RESULTSA. ANALOG-MODULATED SIGNALS311. Amplitude Modulated(AM)Signal===2-312. Pulse-Amplitude Modulated(PAM) Signal58B DIGITAL-MODULATED SIGNALS1. Amplitude Shift Keying(ASK) Signal中中非昏号即即号自唱即自曲音非带卡.最662. Binary-Phase Shift Keying(BPSK) Signal6了VI CONCLUSIONS81A SUMMARY81B SUGGESTIONS82APPENDIX A-CALCULATION OF THE SCD FUNCTION OF AN AMPLITUDE-MODULATED SIGNAL83APPENDIX B-FUNCTION AUTOFAM95APPENDIX C-FUNCTION AUTOSSCA99APPENDIXD-FUNCTION CROSSFAM103APPENDIX E-FUNCTION CROSSSSCA109APPENDIX F-PLOTTING ROUTINES113LIST OF REFERENCES115INITIAL DISTRIBUTION LIST看音117INTRODUCTIONA. MOTIVATIONPropeller related acoustic signatures typically exhibit modulationcharacteristics. These modulation characteristics originate from the cavitationprocess that takes place in the water due to the cyclic movement of the propellerThe cavitation process is basically the collapse of air and vapor bubblesdue to variations in the static pressure. These variations in static pressure are aconsequence of the passage of the propeller blades through the water. Thismovement, cyclic in nature, causes amplitude modulation in the static pressureand as a consequence an amplitude-modulated(AM) signal can be detected in areceiverCyclostationary processing techniques have been used to detect andlentify analog and digital communication signals very successfully. Thesetechniques have the advantage of using a more realistic model for the signalthan the stationary model used in most of the more conventional signalprocessing techniquesB BACKGROUNDThe basic elements of cyclic spectral analysis are the time-variant cyclicperiodogram and the time-variant cyclic correlogram. These two functions form aFourier transform pair. This fact is known as the cyclic Wiener relation or thecyclic Wiener-Khinchin relation [Ref. 1: p. 49.1
- 2020-12-05下载
- 积分：1
-
高仿百度地图APP
该APP是一款高仿百度地图的APP，它具有基本地图功能，定位功能，全景显示功能，语音播报导航功能等功能，并且整体的地图的界面都是仿照现在百度地图的APP来设计的。
- 2020-12-11下载
- 积分：1
|
联系客服（QQ：3324461878）
