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cgpscyl

于 2010-01-28 发布 文件大小:230KB
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  从GPS产业链动荡看便携式导航技术的发展——相当不错的一篇文章,希望对您有所(From the turmoil in the industry chain to see a portable GPS navigation technology for development- a fairly good article, hope you find this)

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  • handover
    用于无线通信系统越区切换理论的研究,高速铁路环境下越区切换的研究。(Handoff for wireless communication systems theory studies, a high-speed railway environment handoff.)
    2013-03-07 16:23:40下载
    积分:1
  • DataDemon--time-frequency-analysis-
    DataDemon-时频分析解决方案 随着科技迅速发展,讯号分析处理者面临的是日趋庞大的计算数据量,和越来越复杂的仿真模式。如何缩短开发时间、节省研究经费、又能实现高效能、高弹性的运算平台供后续研究使用便越来越重要。 DynaDx提出DataDemon-时频分析解决方案,以组件组合的设计概念,免除繁杂程序写作方式,提供讯号处理的可视化控制组件,让处理讯号分析的过程就像拼组模型一般,使用者可依据自己的构想去组合出更多元之讯号分析呈现。不再需要从头撰写繁杂的程序代码便能使用各种讯号处理的算法,也不必将时间花在除错、评估程序运行效能,而能专注于研究目标的分析及后续应用的开发上。 (DataDemon-time-frequency analysis solutions With the rapid development of science and technology, signal analysis and processing is increasingly faced by the huge amount of data calculation, and increasingly complex simulation models. How to reduce development time, save research funding, but also to achieve high performance, flexible computing platform for subsequent research use have become increasingly important. DynaDx DataDemon-time frequency analysis proposed solutions to the design concept of component combinations, eliminating the complicated procedures written in a way to provide a visual signal processing control unit, so that the signal processing analysis process as spelled group of models in general, users can be based on their own idea to mix the signal out more element analysis presented. No longer need to write complicated code from scratch, will be able to use a variety of signal processing algorithms, nor do you have time to spend debugging, performance evaluation pro)
    2021-04-04 19:29:04下载
    积分:1
  • Study-of-VSC-HVDC-Controller-
    风电潮流的波动会引起并网系统公共连接点(PCC)电压的波动。在基于电压源换流 器的高压直流输电(VSC-HVDC)交直流混合风电场并网系统中,控制VSC-HVDC 送端站注入 到PCC 点的无功功率可以抑制电压波动。本文讨论了VSC-HVDC 的无功功率控制器和定电压控制 器抑制电压波动的原理。基于电磁暂态软件PSCAD/EMTDC 建立了并网风电场模型、VSC-HVDC 模型及控制系统模型。仿真结果表明VSC-HVDC 采用定电压控制器的并网系统能更好的抑制电 压波动,采用无功功率控制器的系统具有较好的风电场并网性能。(Reactive power variation of integration wind farm may cause point of common coupling (PCC) voltage fluctuation. In hybrid wind farm integration system based on HVDC of voltage source converter (VSC-HVDC), the voltage fluctuation can be alleviated by compensating reactive power to PCC from VSC-HVDC sending end. Therefore, the reactive power controller and the stable voltage controller to alleviate voltage fluctuation are studied in the paper. The integration wind farm, VSC-HVDC and their controller models are set up by PSCAD/EMTDC. The simulation results show that the integration system adopted stable voltage controller has a better performance to alleviate voltage fluctuation. However the system adopted reactive controller has a good wind farm integration capability.)
    2012-03-01 16:09:37下载
    积分:1
  • VSCF
    变速恒频风力发电技术风力发电具有一些自身所拥有的特点,因此如何提高整个风力发电系统的效率、性能以及其输出电能质量,是当今风力发电研究的重点也是风力发电研究的发展方向。目前已有的风力发电技术主要有四类:定桨距调节技术、变桨距调节技术、主动失速调剂技术、变速恒频技术。因定桨距调节技术产生的时间比较早,并且现在的风力发电系统中不再使用因此不做详细介绍。(VSCF wind power generation technology)
    2012-05-29 15:37:22下载
    积分:1
  • Applying-Power-Battery--in-Grid
    通过动力电池参与电网调峰应用分析,论述电动汽车动力电池移动储能技术应用优势、可行性和基本 系统模型,为今后的研究提供参考 (In this paper, the application ofpowerbatteries for the peak regulation in gridwas analyzed. The advanta- ges, feasibilities and basic system model of the mobile energy-storage technology were discussed, which provided some references for further research. )
    2011-08-10 11:14:03下载
    积分:1
  • Information-Storage-and--Management
    EMC信息存储与管理 作 者:(美国)萨曼达 人民邮电出版社(EMC information storage and management of: (U.S.) Saman Da People' s Posts and Telecommunications Press)
    2013-01-17 20:34:04下载
    积分:1
  • 1
    说明:  经过二十余年的快速发展, 空间激光通信的研究重心逐渐从高精度ATP分系统向高速 率通信分系统转移 紧密跟踪空间激光通信的国际发展最新动态,从通信带宽和链路功率两个方面, 针对通信发射单元、接收单元和信道特性,分析了提高空间激光通信传输速率的技术难度与途径.分 别阐述了波长1 550 nm、基于EDFA 功放和前放技术,空间相干技术,光偏振复用技术.光波分复用 技术的基本原理、性能指标及关键技术,为高速率空间激光通信提供了技术参考(After more than 20 years the rapid development of space laser communications research center of gravity gradually transferred to the high-speed communication subsystem from the high-precision ATP subsystems closely track the latest developments of the international development of space laser communications, communication bandwidth and link power of two. communications transmitter unit, receiver unit and channel characteristics, technical difficulty and ways to improve the transfer rate of space laser communications. Described wavelength of 550 nm, based on EDFA amplifier and put technology, spatial coherence, optical polarization multiplexing. The basic principles of optical wavelength division multiplexing technology, performance indicators and key technologies, and provide a technical reference for high-rate space laser communications)
    2012-05-31 16:41:40下载
    积分:1
  • WInternet-From-thing-to-IOT
    最新的物联网的前沿研究讨论,对物联网的发展有一定参考意义。(The latest cutting-edge research of Internet of things to discuss, has certain reference significance to the development of the Internet of things.)
    2013-11-05 12:46:49下载
    积分:1
  • ppt
    本PPT着重研究了当前手游行业推广渠道的各种方式以及每种方式的利弊(The PPT focuses on the current hand travel industry marketing channels as well as the various ways the pros and cons of each approach)
    2013-08-21 17:14:05下载
    积分:1
  • 云计算战略思考
    互联网公司通过改良传统中间件或改进设计架构使其具备分布式能力,同时使用了新兴的采用分布式思路设计的大数据中间件等方案,让应用系统具备了支撑弹性扩展、高并发、海量数据、高可靠业务的能力,并大大缩短业务的上线和更新周期。(Strategic thinking of cloud computing)
    2017-11-17 21:36:40下载
    积分:1
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