基于FPGA的高频PWM开关电源控制器设计

利用R语言，进行bekk模型回归library(mvtnorm)library(tseries)library(mgarchBEKK)data

Adobe Audition (前Cool Edit Pro) 是美国 Adobe Systems 公司 (前Syntrillium Software Corporation) 开发的一款功能强大、效果出色的多轨录音和音频处理软件。它是一个非常出色的数字音乐编辑器和 MP3制作软件。不少人把Cool Edit形容为音频“绘画”程序。你可以用声音来“绘”制：音调、歌曲的一部分、声音、弦乐、颤音、噪音或是调整静音。而且它还提供有多种特效为你的作品增色：放大、降低噪音、压缩、扩展、回声、失真、延迟等。你可以同时处理多个文件，轻松地在几个文件中进行剪切、粘贴、合并、重叠声音操作。使用它可以生成的声音有

HCNP题库，HCNP-R&S认证包括但不限于：网络基础知识，交换机和路由器原理，TCP/IP协议簇，路由协议，访问控制，eSight、Agile Controller产品介绍，SDN、VXLAN、NFV的基本知识，PDIOI等。通过HCNP-R&S认证，将证明您对中小型网络有全面深入的了解，掌握中小型网络的通用技术，并具备独立设计中小型网络以及使用华为路由交换（数通）设备实施设计的能力。拥有通过HCNP-R&S认证的工程师，意味着企业有能力搭建完整的中小型网络，将企业中所需的语音、无线、云、安全和存储全面地集成到网络之中，并且能满足各种应用对网络的使用需求，进而提供较高的安全性、可用性

DSP程序开发：MATLAB调试及直接目标代码生成 带标签DSP程序开发：MATLAB调试及直接目标代码生成 带标签

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

通过串口来控制pwm的输出 已经调通并用在项目上 波特率为9600 pwm可以随意设置 16位定时器 并可以通过串口来控制pwm的产生 非常非常好用

【实例简介】该程序是通过单片机与TLC5620的串行DA芯片产生方波、三角波、正弦波，并且可以通过按键调节方波、三角波以及正弦波的频率与幅度，方波占空比可调。

matlab亚像素边缘提取代码，供学习！

针对各种时序波形的绘制，添加工具到visio中可以画出任何你想要的时序波形图，不需要其他软件，只需要visio即可

基于RFID的考勤管理系统(附源程序代码)