shp 文件修復工具（Shape
Checker），解決由于dbf文件和shp文件不一致導致打不開的問題.shape文件修復工具免費下載 由ESRI開發(fā)，一個ESRI（Environmental
Systems Research
Institute)的shape文件包括一個主文件，一個索引文件，和一個dBASE表，其中主文件的后綴就是.shp。
This thesis is about wireless communication in shared radio spectrum. Its origin and
motivation is ideally represented by the two quotations from above. In this thesis, the
support of Quality-of-Service (QoS) in cognitive radio networks is analyzed. New
approaches to distributed coordination of cognitive radios are developed in different
spectrum sharing scenarios. The Wireless Local Area Network (WLAN) 802.11 proto-
col of the Institute of Electrical and Electronics Engineers (IEEE) (IEEE, 2003) with
its enhancement for QoS support (IEEE, 2005d) is taken as basis. The Medium Access
Control (MAC) of 801.11(e) is modified to realize flexible and dynamic spectrum
assignment within a liberalized regulation framework.
n its Framework and Roadmap for Smart Grid Interoperability Standards, the US
National Institute of Standards and Technology declares that a twenty-first-century
clean energy economy demands a twenty-first-century electric grid. 1 The start of the
twenty-first century marked the acceleration of the Smart Grid evolution. The goals
of this evolution are broad, including the promotion of widespread and distributed
deployment of renewable energy sources, increased energy efficiency, peak power
reduction, automated demand response, improved reliability, lower energy delivery
costs, and consumer participation in energy management.
Under the Energy Independence and Security Act of 2007 (EISA), the National Institute of
Standards and Technology (NIST) was assigned “primary responsibility to coordinate
development of a framework that includes protocols and model standards for information
management to achieve interoperability of Smart Grid devices and systems…” [EISA Section
1305]. 35 This responsibility comes at a time when the electric power grid and electric power
industry are undergoing the most dramatic transformation in many decades. Very significant
investments are being made by industry and the federal government to modernize the power grid.
To realize the full benefits of these investments—and the continued investments forecast for the
coming decades—there is a continued need to establish effective smart grid 36 standards and
protocols for interoperability.
My association with the theory of controls in continuous time started during my studies at
the Indian Institute of Technology, Kharagpur, India, in 1974 as an undergraduate student
in the Controls and Power program. The initial introduction by Professors Kesavamurthy,
Y. P. Singh, and Rajagopalan laid the foundation for a good basic understanding of the
subject matter. This pursuit and further advanced study in the field of digital controls
continued during my days as a graduate student in the Electrical and Systems Engineering
Department at the University of Connecticut in Storrs, from 1983 to 1988.
The 9th International Conference on Large-Scale Scientific Computations
(LSSC 2013) was held in Sozopol, Bulgaria, during June 3–7, 2013. The conference
was organized and sponsored by the Institute of Information and Communication
Technologies at the Bulgarian Academy of Sciences.
基于FPGA設計的相關論文資料大全 84篇用FPGA實現(xiàn)FFT的研究
劉朝暉 韓月秋
摘 要 目的 針對高速數(shù)字信號處理的要求，給出了用現(xiàn)場可編程門陣列(FPGA)實現(xiàn)的
快速傅里葉變換(FFT)方案.方法 算法為按時間抽取的基4算法，采用遞歸結(jié)構(gòu)的塊浮點運
算方案，蝶算過程只擴展兩個符號位以適應雷達信號處理的特點，乘法器由陣列乘法器實
現(xiàn).結(jié)果 采用流水方式保證系統(tǒng)的速度，使取數(shù)據(jù)、計算旋轉(zhuǎn)因子、復乘、DFT等操作協(xié)
調(diào)一致，在計算、通信和存儲間取得平衡，避免了瓶頸的出現(xiàn).結(jié)論 實驗表明，用FPGA
實現(xiàn)高速數(shù)字信號處理的算法是一個可行的方案.
關鍵詞 離散傅里葉變換； 快速傅里葉變換； 塊浮點運算； 可編程門陣列
分類號 TP39； TN957.511
Implementation of FFT with FPGA Technology
Liu Zhaohui Han Yueqiu
(Department of Electronics Engineering, Beijing Institute of Technology, Beijing 100081)
Abstract Aim To propose a scheme for implementing FFT with FPGA in accor-dance with the
requirement for high speed digital signal processing. Methods The structure of FPGA and
requirement of system were considered in the experiment, radix-4 algorithm of DIT and recursive
structure were adopted. The group float point arithmetic operation was used in the butterfly and the
array multiplier was used to realize multiplication. Results The pipeline pattern was used to ensure
the system speed, it made fetching data, calculating twiddle factor, complex multiplication and D
機器人是整合控制論、機械電子、計算機、材料和仿生學的產(chǎn)物，能實現(xiàn)環(huán)境感知、動態(tài)決策與規(guī)劃、行為控制與執(zhí)行等多種功能。機器人代表了科學技術的最高水平，在工業(yè)、農(nóng)業(yè)、醫(yī)學建筑業(yè)甚至軍事等領域中均有重要用途]。宋健院士在國際自動控制聯(lián)合會第14屆大會報告中指出：“機器人學的進步和應用是20世紀自動控制最有說服力的成就，是當代最高意義上的自動化”2嗎。現(xiàn)在，國際上對機器人的概念已經(jīng)逐漸趨近一致。一般來說，人們都可以接受這種說法，即機器人是靠自身動力和控制能力來實現(xiàn)各種功能的一種機器。聯(lián)合國標準化組織采納了美國機器人協(xié)會（Robot Institute of America，RlA）于1979年給機器人的定義：一種可編程和多功能的，用來搬運材料、零件、工具的操作機；或是為了執(zhí)行不同的任務而具有可改變和可編程動作的專門系統(tǒng)]。作為機器人研究領域的一個重要分支，雙足機器人（Humanoid Robot）由于其廣闊的應用空間一直是研究熱點之一。所謂雙足機器人，又稱仿人機器人，是具有人形的機器人，是關節(jié)轉(zhuǎn)動靈活，控制系統(tǒng)復雜，能完成高難度的動作的機器人。它是機械、自動控制技術、計算機技術、人工智能、微電子學、模式識別、通訊技術、傳感器技術、仿生學等多學科和技術綜合的結(jié)果，代表著一個國家高科技發(fā)展水平。研制與人類特征類似，具有人類智能、靈活性，并能與人類交流，不斷適應環(huán)境的雙足機器人一直是人類的努力的目標]。與傳統(tǒng)機器人相比，雙足機器人具有顯著的優(yōu)勢，比一般機器人有更大的機動性、靈活性，同時也具有更廣泛的應用領域。雙足機器人的出現(xiàn)是控制科學、傳感器技術、人工智能、材料科學等學科的技術進步，以及機器人使用范圍的擴大和人類日常生活需要的產(chǎn)物。雙足機器人在工農(nóng)業(yè)生產(chǎn)、科學探測、軍事偵察、生活服務與娛樂等很多方面都有廣泛的應用前景。首先雙足機器人在拓展人類的認知范圍上發(fā)揮著重要作用，在外層空間、深海等人類尚不能到達的環(huán)境都有雙足機器人的身影；其次雙足機器人已經(jīng)廣泛應用在惡劣、危險條件下或其它不適合人類活動的環(huán)境中。雙足機器人的迅速發(fā)展和廣泛應用，對人類社會的生活和生產(chǎn)產(chǎn)生了深遠的影響。也正是因為雙足機器人的廣泛的應用背景和商業(yè)價值，所以近年來，雙足機器人成為機器人研究領域內(nèi)的一個熱點]。
VIP專區(qū)-嵌入式/單片機編程源碼精選合集系列（32）資源包含以下內(nèi)容：1. 無線音頻電話(gprs).2. 經(jīng)典的psos編程實例源碼.3. 嵌入式系統(tǒng)文件管理部分.4. lwIP是瑞士計算機科學院（Swedish Institute of Computer Science）的Adam Dunkels等開發(fā)的一套用于嵌入式系統(tǒng)的開放源代碼TCP/IP協(xié)議棧。Lwip既可.5. 非常經(jīng)典的網(wǎng)絡協(xié)議棧.6. "CAN0 CAN4 C"是CAN0和CAN4通訊的程序。用戶可參照此例程設置MSCAN模塊。本文件夾是為用戶提供的codeworrior編程范例.7. 本文件夾是為用戶提供的codeworrior編程范例.8. ucos-ii 編譯器ICCAVR CPU atmega8 8M 晶振 對原作者的ucos進行了簡化.9. "Port ucosii V252"是嵌入式操作系統(tǒng)uC/OS-II在DP256/DG128上移植的范例。提供的codeworrior編程范例.10. "SendA"通過調(diào)用監(jiān)控程序.11. "printpp"是幫助用戶調(diào)試的一個工具.12. This program is free software you can redistribute it and/or modify it under the terms of the GNU Ge.13. device driver for various TV and TV+FM radio tuners.14. D:MyData其它我的文章C51cp1_1 est.uv2 Project File Date: 04/02/2003.15. 一個簡單的TCP IP協(xié)議棧程序.16. 校園導游系統(tǒng).17. 本文檔是關于boa web服務器的源程序.18. boa web服務器的主程序.19. 關于boa web服務器的配置文件.20. 嵌入式操作系統(tǒng)TCP/IP協(xié)議棧的socket小程序.21. 講解嵌入式TCP/IP協(xié)議棧的編寫.22. 本原代碼集是對計算機圖形學的編程實踐.23. 關于TCP/IP的一份碩士論文.24. 這是一個在VxWorks系統(tǒng)實現(xiàn)CS網(wǎng)卡END驅(qū)動的原代碼.25. 實現(xiàn)一個運行在16位數(shù)字信號處理器TMS320VC5402上的小型嵌入式TCP/IP協(xié)議棧。對TCP/IP協(xié)議中的IP協(xié)議、ARP協(xié)議、UDP協(xié)議進行分析.26. 此為講解內(nèi)存技術的文檔資料.27. 我設計的數(shù)字電源的源代碼 還有原理圖.28. ARM MP3解碼源代碼1.0 有完整的項目文件.29. 基于WEB的嵌入式視頻采集壓縮瘦身服務器的設計與實現(xiàn).30. 此文當為日本嵌入式tron的技術文檔,目前在日立等公司的主流嵌入式系統(tǒng)還是tron.31. C++的溫度控制系統(tǒng),是本人在其它網(wǎng)站上找到的,還沒有試過.32. 基于牛頓迭代法的二次規(guī)劃程序.33. PCI總線與USB總線之間的數(shù)據(jù)通信的用戶端應用程序（包括界面和通信）.34. GIF動畫解碼算法.35. 一個嵌入式web server的源碼。小巧好用.36. 一個橋接器87ch47仿真器的c的源程序.37. 給ARM7用的MP3程序源碼.38. 給ucgui用的字庫HZK12,12x12點陣的漢字庫和hzk16點陣的漢字庫.39. 很多人想要的LCDSLIN.c文件是給UCGUI用的驅(qū)動文件.40. 下載管理器是基于HTTP1.1而建立的,支持斷點續(xù)傳.采用Java Swing創(chuàng)建了一個簡單高效的GUI界面,具有一次下載多個文件的能力..
