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完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，
一个相对完整的OFDM通信系统的仿真设计，包括编码，调制，IFFT，上下变频，高斯信道建模，FFT，PAPR抑制，各种同步，解调和解码等模块，并统括系统性能的仿真验证了系统设计的可靠性。
- 2020-12-09下载
- 积分：1
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燃气轮机性能仿真
好东西需要分享，可以详细了解燃气轮机的仿真和整个系统的特性， 更好的分析燃气轮机
- 2020-12-04下载
- 积分：1
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AD元件库常用封装
altium designer 常用元件库，含有单片机8051.IntLib，AD转换.lib，CMOS系列.Lib，数码管光耦.SCHLIB，单片机及相关.SCHLIB，TTL74系列IC.SCHLIB，IC.SCHLIB，场效应管.LIB，可控硅.Lib，LM317-337封装.PcbLib，开关.PcbLib，数码管.PcbLib，液晶显示器.PcbLib，继电器.PcbLib，阻容.PcbLib，集成块.PcbLib，常用元件封裝庫(pcb).PCBLIB，变压器.PcbLib，4位共阳极数码管.SchLib，J继电器.SchLib，LCD显示.SchLib，OP光耦.SchLib，O
- 2021-05-07下载
- 积分：1
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（pso-SVM）的MATLAB程序
这是pso优化的支持向量机程序，主要用于各种数据的分类
- 2020-11-04下载
- 积分：1
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数学形态学的边缘检测程序
用于数字图像边缘检测的matlab实现，一种新兴的边缘检测方法
- 2020-12-02下载
- 积分：1
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一种改进的TOA——AOA混合定位算法
混合定位中很不错的一篇文章，看过之后很受启发在TOA和AOA误差服从零均值的高斯分布时,以上⑧无AOAQ阵中AOATOA/AOA混合定位算法的克拉美一罗下界(CRLB)为:校准离差取rP=(GQG)90Q阵中AOA校准离差取(x-x1)/其中:G=(x-x r(y-m)/r(19)洲6050(x)2(+(y-y))(x-x)(+(y-y)0.020.040.060080.100.12(x-x1)AOA标准离差(stda,单位radx-图1都市环境中算法性能比较3仿真与分析为了检验和比较算法在实际蜂窝网络信道环境中的定位性能,假定在一蜂窝网络中,小区半径为2500m,参与TOA测量的BS为服务BS和4个相邻的BS,其位置坐标分别为(0,0),(4330,2500),(4330,2500),(0,5000),(-4330,2500)。假定由测量系统造成的TOA测量误差服从均值为0,方差为30米的高斯分布,信道环境造成的NIOS误差满是TP1.5信道模型14,服务BS始终能够提供AOA,AOA测量误差服从均值为0和一定标准差的高斯分布。图1为都市环境中假定只有服务BS能视距(LOS)传播时,MS在服务小区内均匀分布,在不同AOA标准差下算法定位误差在125m内的概率。图中可见,Q矩阵中σα的取值对算法定位性能有很大影响,在AOA标准差较小时用TOA测量值η近似替代σa能取得更好的定位性能,这是由于WLS算法采用了Q阵加权。此外,120只要AOA测量值达到一定精度(标准差小于一定值),采用10-10A-A0A00TOAAOA混合定位法就能取得比单纯TOA定位更好的性能。图29080为乡村环境中在不同AOA标准差下,由单纯TOA及 TOA/AOA70定位法(Q矩阵中取n=r)得到的由均方根误差(RMSE)表示的定位性能。由图2可见,乡村环境中由于TOA测量精度较高,30对AOA的精度要求也高。只有当AOA标准差更小(小于10-3)AOA标准离差(og)时,混合定位算法才能取得比单纯TOA定位更好的性能。图2乡村环境中算法性能比较为了检验MS与服务BS距离对算法定位性能的影响,在一般都市环境中可以假定MS位于与服务BS具有不同距离的两个位置(1200,0)和(2400,0)分别进行定位估计,五个BS具有非视距TOA测量值的概率分别为:0、0.2、04、0.6、0.8、1,服务BS能够提供的AOA测量误差分别服从均值为0,标准差为01、0.0lrad的高斯分布,Q矩阵中用r近似替代σn,对每个位置在每种条件下分别进行100次测量,算法在无AOA及具有两种标准差的AOA时的定位结果(RMSE)如图3、4所示仿真结果表明:AOA参与卜AOA标准离差=001AOA标准离差=0,01定位只有在AOA本身误差不大AOA标准离差=0.1AOA标准离差=0.1无AOA无AOA的情况下,才能对定位性能有改200善;如果AOA本身误差增大150则对TOA定位结果并不会有改l00善;MS距离服务BS越近,则50采用混合定位算法的效果越好。00.00.204060.810000.20.40.608104结论BS非视距概率Bs非视距概率图3个同标准差时算法图4不同标准差时算法本文的分析和仿真结果表性能比较(1200,0)性能比较(2400,0)明,只要服务BS提供的AOA测量值达到一定精度,合理选择Q矩阵中AOA标准差取值,本文提出的 TOA/AOA混合定位算法就o1994-2012ChinaAcademicJournalElectronicPUblishingHouseAllrightsreservedhttp:/www.cnki.neto1994-2012ChinaAcademicJournalElectronicPUblishingHouseAllrightsreservedhttp:/www.cnki.net
- 2020-12-02下载
- 积分：1
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基于TDOA定位的仿真程序
基于TDOA定位的仿真程序，用MATLAB打开，会出来仿真图形
- 2020-12-06下载
- 积分：1
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无人驾驶入门--Autoware使用手册
无人驾驶汽车系统入门 - Autoware_UsersManual_v1.1Autoware-用于城市自主驾驶的集成开源软件，支持以下功能：3D本地化3D映射路径规划路径跟随加速/制动/转向控制数据记录汽车/行人/物体检测交通信号检测交通灯识别车道检测对象跟踪传感器校准传感器融合面向云的地图连接自动化智能手机导航软件仿真虚拟现实Autoware受BSD许可证保护。请自行负责使用。为了安全使用，我们为不拥有真正自主车辆的人提供基于ROSBAG的仿真方法。如果您使用Autoware与真正的自主车辆，请在现场测试之前制定安全措施和风险评估。工尹-刁一定義亡机飞求世。Chapter1。 About This documentThis chapter describes the purpose of this document.Autoware Users ManualAutoware Developers manualChapter2。 RoS and AutowareBefore operating Autoware, RoS and Autoware are described in this chapter.Robot middleware- rosecently, the wide range potential of robotics has been focused by not only roboticsexperts but also non-robotics experts to join robot development It is believed thatthis trend leads robotics to advancement and developments to other domainsHowever, robot development is getting harder because the advancement and the complexityof robot functions have been increased Unlike Pcs and smartphones robotic developmenthas considered various hardware, OS, programming languages. Hence, the differences havemainly been obstructed for robotic developers as well as robotics experts to join robotdevelopmentTo solve the problem, the demand of making common platforms has been increased, andsome platforms have been published Within a common platform, developers can combinevarious software published by other developers, and speed up development by reusing themTherefore, it is expected that developers can more focus on fields of interestROS (Robot Operating System) is a framework for robotic software development. It wasdeveloped by Willow Garage in U.S. OSFR (Open Source Robotics Foundation) has currentlymaintained it. The open sourced ros has mainly been used by communities in U.S. andEurope as well as communities in JapanNote that ros has "os" in its name however, it is not "os" like Windows or linux. It is amiddleware that runs on uniX based OSROS FeaturesOriginal build system(Catkin)mage processing library(OpenCvv Data logging tool (ROSBAG)v Visualization tools for data and software state(rvizCoordinate transformation library (TFQt based gul development tool (RQTA""file is used to start multiple nodes atAutowareutoware is open source software based on ros. autoware is pushed on github forautonomous driving research and development. Most of autonomous drivingsystem consist of recognition, judgment, and operation. Autoware providesnecessary functions, such as 3-D map generation, localization, object recognition, andvehicle control, for autonomous drivingROS PCAutoware〔Ros)RecognitionJudgmentoperationObject DetectionLane KeepingAcceleratorLocalizationIntersectionBrakeSteeringAutowareRiderAutoware routePath PlanningVehicleVehicle control(CAN)CFigure 1 Autoware overviewwhile support systems such as driving assistance and safetydiagnosis support, use multi-core CPU3-D Map Generation and SharingLocalization(NDT: Normal Distributions Transform)object DetectionPath GenerationAutonomous Drivingtarget speed. In addition, the route includes landmarks, "way point, setintervals. The autonomous driving system operates path following by following the wayUser InterfaceA user interface called " Runtime Manager ofpath following. Furthermore, a tablet user interface, "Autoware Rider, of Autoware enablesROS PCAutoware(ROS)Runtime ManagerVIZAutoware ridertabletDisplay on vehicleOculusFigure 2 User interfacePlatform structure for autowareApplicationAutowareMiddlewareROSHost OsLinux( UbuntuCPUGPUCameraGNSSLIDARFigure 3 Platform structure for Autoware
- 2021-05-07下载
- 积分：1
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锂离子电池模型
锂离子电池的simulink模型，包括12阶等效电路模型和soc的计算模块和热模型
- 2020-06-24下载
- 积分：1
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基于RSSI的无线传感器网络三角形质心定位算法
：节点定位是无线传感器网络中的关键技术之一。基于RSSI的定位技术是现阶段研究的热点，为解决RSSI测量方法定位误差较大的问题，提出一种将RSSI测量方法与三角形质心算法相结合的新型定位算法，该算法用三角形质心算法减小RSSI的测量误差。仿真表明该算法比基于RSSI的三边测量法定位算法的定位精度有较大提高。
- 2021-05-07下载
- 积分：1
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