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易语言:红绿灯实例(入门级)
做一个红绿灯小实例
- 2019-05-21下载
- 积分:1
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java读取kml文件数据
自己做的用java读取kml文件数据,并保存为json文件。方便其它地方解析。
- 2020-12-04下载
- 积分:1
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AD7616_DEMO_sch+pcb+project
压缩包里面包括AD7616(datasheet,sch,pcb,project.)整套demo资料,可以自己制作demo测试
- 2020-12-04下载
- 积分:1
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ROS工业机器人培训资料ppt和code(kinetic)
ROS工业机器人培训资料ppt和code(kinetic)
- 2021-05-06下载
- 积分:1
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DBC 文件格式
Vector公司的dbc文件格式说明文档,详细说明了dbc文件中各标识符的定义。vectorAZ LANEinstrumertvectorPlillllll!!!!!!!!!AEastrue kvectorA/ANEvectorAZANEvectorAZANEnsvectorLANEinstrumevectorACLANEvectorNEnstrument
- 2020-11-27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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OpenCV实现SfM:双目三维重建
使用OpenCV3.0进行双目三维重建。代码是用VS2013写的,OpenCV版本为3.0且包含扩展部分,如果不使用SIFT特征,可以修改源代码,然后使用官方未包含扩展部分的库。软件运行后会将三维重建的结果写入Viewer目录下的structure.yml文件中,在Viewer目录下有一个SfMViewer程序,直接运行即可读取yml文件并显示三维结构。
- 2020-12-04下载
- 积分:1
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三点估计法概率潮流计算
1.matlab代码,在matpower环境下进行潮流计算,用略微修改的ieee30节点,程序在main.m中2.仅考虑了负荷的波动如有原理性的错误望指出
- 2020-11-28下载
- 积分:1
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Visual C++音频视频处理技术及工程实践(含源码2/2)
【实例简介】本书共16章,分为4篇,详细讲解了使用各种软件和平台进行音、视频多媒体编程的技术,以案例为对象展示实现过程、分析技术难点。主要内容包括软件Visual C++2005的开发技术、DirectSound开发音频、DirectShow/VFW开发视频、MMX/SSE进行多媒体汇编编程、DM642 DSP进行音视频算法优化和主流视频算法MPEG-4/H.264的编码原理及工程实践。本书系统地介绍Visual C++ 2005进行流媒体编程的基本思路和方法,采用案例为主的叙述方式,将大量的技术理论融入具体的案例剖析中。采用的案例均来源于作者实际开发工作,具有很好的实用价值,可以帮助读者在开发中进行参考或直接应用。
第1篇 开发基础 1
第1章 数字音视频开发技术基础 3
1.1 数字音视频基本概念 4
1.1.1 数字音频技术基础 4
1.1.2 各种数字音频文件格式基础 4
1.1.3 视频的相关基础概念 8
1.1.4 常见的视频文件格式 8
1.2 数字音视频数据的编解码技术 10
1.2.1 音频数据的编解码 11
1.2.2 视频数据的编解码 13
1.2.3 音视频编码的相关标准 13
1.3 音视频处理平台的选择 15
1.3.1 个人多媒体计算机 15
1.3.2 嵌入式处理器ARM 16
1.3.3 数字媒体处理器DSP 16
1.4 音视频开发的典型应用 16
1.4.1 个人消费类电子产品 16
1.4.2 公共领域的音视频应用 18
1.5 常用音视频开发工具 21
1.5.1 DirectSound音频开发 21
1.5.2 DirectShow视频开发 21
1.5.3 DSP CCS算法开发 22
1.6 本章小结 23
第2章 Visual C++ 2005开发基础 25
2.1 Visual C++ 2005新增特性 26
2.1.1 句柄(Handles) 26
2.1.2 类型的声明 26
2.1.3 对代码编辑的改进 27
2.2 VC能做的事情 27
2.2.1 生成传统的控制台应用程序 27
2.2.2 生成基于MFC的应用程序 32
2.2.3 生成静态链接库 40
2.2.4 生成动态链接库 41
2.3 利用向导完成基本开发 46
2.3.1 生成应用程序 46
2.3.2 生成应用库LIB/DLL 53
2.4 MFC编程基础 56
2.4.1 Windows消息与事件 56
2.4.2 消息与事件的响应 63
2.4.3 常用消息 66
2.5 基于对话框的编程 68
2.5.1 创建和编辑对话框 68
2.5.2 对话框种类 75
2.6 常用控件使用技巧 79
2.6.1 按钮类控件的使用 80
2.6.2 文本可编辑类控件的使用 81
2.6.3 静态类控件的使用 82
2.6.4 其他控件 83
2.7 Visual 2005开发技术资源 84
2.7.1 MSDN在线帮助 84
2.7.2 丰富的网络资源 86
2.8 Visual 2005开发的常见问题 86
2.8.1 如何使用volatile和const_cast 86
2.8.2 如何构造unicode版本的程序 87
2.8.3 如何使用.def文件 87
2.8.4 如何正确编写Win32 DLL 87
2.8.5 如何编写和使用资源DLL 88
2.8.6 如何实现对话框的数据交换 88
2.9 本章小结 89
第2篇 音频开发 91
第3章 DirectSound开发基础 93
3.1 Microsoft DirectSound SDK 94
3.1.1 比较DirectSound与DirectMusic 94
3.1.2 DirectSound SDK能做什么 95
3.1.3 如何获取DirectSound SDK 96
3.1.4 DirectSound SDK的基本结构 98
3.1.5 Directsound SDK安装 100
3.1.6 选择最适合用户的DirectSound SDK 100
3.1.7 用DirectSound进行编程的必要步骤 102
3.2 DirectSound的详细使用方法 103
3.2.1 DirectSound设备对象 104
3.2.2 DirectSound缓冲区对象 107
3.2.3 使用WAV数据 114
3.2.4 使用音效 116
3.3 开发环境配置 118
3.3.1 Visual C++基本开发环境配置 119
3.3.2 DirectSound应用程序的开发环境配置 119
3.3.3
- 2021-10-30 00:34:11下载
- 积分:1
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智能农业控制系统
智能农业控制系统使用大量的传感器节点构成监控网络,对主要的农业生产影响因素进行信息采集,经Zigbee无线网络汇聚后,通过网关传输到计算机中。计算机进行数据的分析和处理,以图表呈现给用户,用户可以根据生产需要,控制喷灌、通风、遮阳等物联网设备,或者设置这些设备的自动调控条件,从而保证农作物有一个良好的适宜的生长环境,达到增产增收、提高品质的目的。-
- 2020-12-06下载
- 积分:1