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微型计算机原理与接口技术（第三版）电子书及答案周荷琴
第1章 微型计算机概述 11.1 微型计算机的发展与应用 11.1.1 微处理器的产生和发展 11.1.2 微型计算机的分类 41.1.3 微型计算机的特点与性能指标 41.1.4 微型计算机的应用 61.2 微型计算机的硬件结构及系统组成 81.2.1 微型计算机硬件的基本结构 81.2.2 微型计算机的系统组成 111.3 计算机中的信息表示 121.3.1 计算机中的数制及其转换 131.3.2 计算机中数值数据的表示 151.3.3 计算机中常用的编码 18本章小结 21思考与练习题 21第2章 典型微处理器 232.1 微处理器性能简介 232.1.
- 2020-12-01下载
- 积分：1
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Q强化学习matlab源代码
Q强化学习matlab源代码，注释详细，本人亲自运行测试。
- 2021-05-06下载
- 积分：1
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STM32F103C8T6 stm32CubeMx HAL程序
使用stm32CubeMx 软件开发STM32 使用最新的HAL库函数。GPIO 输出串口printf 重映射DMA ADC 转换4路 电压后串口输出。
- 2020-12-07下载
- 积分：1
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labview小车程序：避障+循迹+超声测距避障模块
labview小车程序：避障+循迹+超声测距避障模块
- 2020-11-28下载
- 积分：1
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常用EXE文件反编译工具
Resource Hacker Reshacker因原英文版附带的帮助文件格式太老，Win7下无法使用，现已转换为 CHM 帮助文件，去掉了 hlp 文件，仍为中文，但无法从软件的帮助菜单中直接调用，如要查阅帮助文件，请直接点击 ResHacker.chm 文件。* 新增对 PNG 图标的支持。此为官方简体中文版，包括中文程序及中文文档。时隔7年后作者再次更新，主要是提供对64位程序及PNG 图像的支持。Resource Hacker(TM) 可以用来： 1. 查看 Windows 32 位和 64 位可执行文件(*.exe、*.dll、*.cpl、*.ocx、*.mssty
- 2021-05-07下载
- 积分：1
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四步相移法 matlab
四步相移法的matlab程序，自带相位解缠绕
- 2020-07-01下载
- 积分：1
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keil MDK代码配色方案-暗黑主题
本人在使用的KEIL MDK5代码配色方案，暗黑主题，压缩包里面有预览图和字体文件。
- 2020-12-06下载
- 积分：1
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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
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最全 LINQ从基础到项目实战(电子书+PPT+源码)
最全 LINQ从基础到项目实战(电子书+PPT+源码)
- 2020-12-10下载
- 积分：1
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CLBP人脸识别程序及运行结果
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- 2020-12-05下载
- 积分：1
