框頻 的英文怎麼說
中文拼音 [kuàngbīn]
框頻
英文
frame frequency-
In consideration of the crises of both the industrial water and the domestic water in the estuarial areas of the yangtze river caused by the decrease of the channel runoff and the intrusion of the sea water during the dry season in dry year, the concept, method and planning framework of the water resources allocation for the areas mentioned above along the main stem of the river are put forward herein based on the preliminary prediction of the future water demands by taking the water resources allocation therein during the dry seasons as the actual case in combination with the status quo of the water environment and water resources utilization concerned
摘要針對枯水年枯水季，因河道徑流量較少，鹽水入侵的頻率和強度顯著提高而引起的長江河口沿岸地區生產生活用水安全，文中結合長江口地區水資源利用和水環境現狀，以大通以下長江幹流地區在枯水季水量分配為實例，在初步預測未來河口地區水資源需求的基礎上，提出長江口地區水資源配置的思路、方法及方案框架。Abstract : this paper first presents the general design framework of maintenance deployment system in wartime, and then studies the main design criteria : the whole responsiveness, component responsiveness and steadystate efficiency. based on the above, some basic deplyment forms are analyzed and the general design procedure is presented at last
文摘:給出了設計戰時維修資源設置系統一般框架，提出了設計準則：整體反應性、單元反應性和穩態頻率；並運用以上準則對我軍現實活動中採用的幾種基本部署系統形式進行了分析；最後給出了戰時維修資源部署系統設計的一般程序。A digital automatic ultrasonic inspection system designation is introduced. this system was developed with pc computer and embedded dsp, combining computer software and hardware, ultrasonic nondestructive testing, digital signal processing, embedded rtos and visual instruments technology. it meet the requirements of automatic inspection such as high repetitively frequency and real time alertation
該方案以pc機和dsp系統為核心構成主從機系統框架，以基於虛擬儀器思想的pc機應用程序和基於dsp的嵌入式實時操作系統構成雙重軟體結構，把傳統的超聲波無損檢測技術和先進的虛擬儀器技術、數字信號處理技術、嵌入式實時操作系統、計算機介面通信技術相結合，從而滿足了自動化探傷中1k / s的重復頻率和實時報警的要求。The dynamo runs at rull speed to drive main shaft, then the main shaft makes the emulsifying wings in emulsification grove rotate, which absorbs the liquid in its brand groove into ring groove through guide vanes on upper and lower sides of the groove. the vanes spins circularly at high speed with the main shatf as center, and the blade and emulsificaton groove cut and crush it continuously. after that. it gers squeezed by the vanes highspeed centrifugal rotation. at last, it finishes isotropt emulsification tratment within extremely short time after continuous circulating mixing
由電動機全速運轉帶動主軸，經主軸轉動乳化框槽內之乳化翼片，使其將桶槽內之液體經框槽上、下兩側之導流葉片吸入環狀框槽內，經以主軸為中心高速圓周旋轉葉片；連續使乳化翼端刀面與乳化框間極小之間系高頻率之強力切割剪斷、粉碎，再借葉片高速離心旋轉排擠，持續循環混合，以極短之時間即可完成均質乳化之處理。The signal format of gps is analyzed, the principle models and mathematical models are established, the ber performance is analyzed in a channel interfered with wide - bandwidth awgn, narrow - bandwidth awgn, transmitted signal, single - tone signal respectively. based on the results above interference methods are discussed and simulated. then the performance of code acquisition and code trace of a digital gps receiver are discussed. the modem of linkl 1 and link4a are modeled and their ber performances are analyzed and simulated in channel s interfered with awgn, single - tone signal and multi - tone signal respectively
建立了jtids的收發終端的數學模型，分析它在噪聲干擾、相關干擾、互相關干擾下的誤碼性能，提出較佳的干擾方法和干擾碼型，並進行模擬模擬；分析了gps的信號格式，建立了gps的原理框圖模型、信號數學模型，並對其在寬帶噪聲干擾、窄帶噪聲干擾、轉發干擾、單頻干擾等情形下的誤碼性能進行了分析比較，提出相對較佳的干擾方法，並做了計算機模擬，針對一數字式gps接收機中擴頻碼捕獲與跟蹤環的特性進行分析；建立了link11和link4a數據鏈調制解調數學模型，對它們在噪聲干擾、單音干擾、多音干擾等下的誤碼性能進行分析，最後對干擾情況進行了模擬模擬。This paper introduces a project based on code division multiplexed that is used to realize four el channels ' s wireless transportation. after briefly introducing the whole structure of the device of transportation, this paper introduces mainly implemention of the hardware. futhermore, the discussion concerning the selection of principles in code acquisition and the threshold setting of code acquisition on continous pilot in the receiving unit is given. at the same time, the methods about how to design the parameters of dll is introduced in this paper. in addtion, how to solve the actual problems in debugging the hardware is also provided
本文提出了一種基於碼分復用技術的四路e1數據擴頻無線傳輸設備的實現方案。在介紹整個擴頻數傳設備實現框圖的基礎上，重點介紹了硬體平臺的實現；接收單元捕獲策略的研究及其捕獲門限的確定方法；以及接收單元dll環路參數設計方法；並給出了調試過程中遇到的實際問題及其解決措施。基於調試所遇到的問題，論文的最後提出了這套數傳設備的改進方案。With the objective of developing distributed simulation system of frequency hopping ultrashort communication countermeasure system, the federation architecture and the complex envelop simulation block diagrams of fr transmitter and receiver are presented at first
摘要以建立超短波跳頻通信對抗分散式模擬系統為目的，首先給出了聯邦的體系結構及跳頻發信機、接收機成員的復包絡模擬框圖。First, how to conduct sample and quantification of continuous time signal which is prior condition of sdr is explored in detail, and the comparison and analysis of some sample modes are given in which band pass signal sampling theorem is most important. second, multi - sample rate signal processing which is an important basis of sdr is studied. emphasis are put on decimation and interpolation those are the most fundamental process and the realization of decimation and interpolation filter
在基於中頻采樣的軟體無線電結構框架下，首先詳細探討了軟體無線電的前提條件，即如何對連續時間信號進行采樣量化，比較分析了幾種采樣的方式，其中最為重要的是帶通信號采樣定理；然後探討了軟體無線電的一個重要基礎，即多采樣率信號處理，重點討論其最基本的兩個過程抽取和內插以及抽取器和內插器的實現；接著介紹了結構簡單、適用於一級抽取的cic濾波器和適用於做2倍抽取的半帶濾波器；再次論文在總結了傳統的調制解調基礎上，結合軟體無線電器件的特點，系統的探討並實現了基於正交思想的am 、 fm 、 ask 、 fsk 、 bpsk 、 qpsk的正交調制解調演算法。Provide an accessor for their connection ; however, application servers and web application frameworks frequently use the decorator pattern to wrap jdbc connections
為它們的連接提供了存取器；但是，應用程序服務器和web應用程序框架頻繁地使用修飾器模式包裝jdbc連接。This analysis framework is proposed based on adequate comparison of existing multi - model information fusion methods and the discovery of periodic characteristic of racquet sports video. it is a general sports video content analysis method based on audio / visual middle level features, domain rules, context, and highlights ranking. its advantages include simplicity, intuitiveness, generality, context - sensitive and affectivity
該分析框架是在充分分析現有的多模態信息融合方法並結合球拍運動周期性特點后提出的，是一個基於音視頻中層特徵、領域規則、採用時序分析方法形成精綵排序的通用體育視頻內容分析方法，兼具了復雜度低、直觀性強、通用性好、上下文相關和有感知性這五項優點。Second part - the main contribution and research results of this paper are focused on as follows : ( 1 ) how to use the measurements of a dual frequency gps receiver to determine the ionospheric delay correction model for single frequency gps of a local range ; ( 2 ) how to separate the instrumental biases with the ionospheric delays in gps observation ; ( 3 ) how to establish a large range grid ionosphere model and use the gps data of chinese crust movement observation network to investigate the change law of ionospheric tec of china area ; ( 4 ) how to improve the effectiveness of correcting ionospheric delays for waas ' s users under adverse conditions. ( 5 ) how to establish the basic theory and the corresponding framework of monitoring the stochastic ionospheric disturbance using gps ( 6 ) how to improve the modelling ability of ionospheric delay according to its diurnal, seasonal, annual variations based on gps ; ( 7 ) how to meet the demand of correcting the ionospheric delay of high - precision orbit determination for low - earth satellite using a single frequency gps receiver 1 extracting ( local ) ionospheric information from gps data with high - precision the factors are systematically described and analyzed which limit the precision of using gps data to extract ionospheric delays
二、具體研究工作的系統報告，主要集中在以下幾方面：研究如何利用單臺雙頻gps接收機的觀測信息確定電離層延遲改正模型，為小范圍的單頻用戶服務；研究如何實時分離gps觀測中的儀器偏差與電離層延遲；研究如何建立較大區域的電離層格網模型，進而初步設想利用中國地殼運動觀測網路深入研究我國領域的電離層的電子濃度變化規律；研究單頻用戶在不利條件下，如何更好地利用電離層延遲改正信息；研究利用gps監測隨機電離層擾動的基本理論和框架方案；研究如何綜合顧及電離層的周日、季節和年變化，進一步提高利用gps模擬電離層延遲的能力；研究如何實現星載單頻gps低軌衛星的精密測軌中的電離層延遲改正要求。The query module is a retrieval system on internet, it adopts b / s mode of three - layer structure, and has been implemented by using the inner component ado and the third party component fileup of asp technology and sql server 7. 0. this module can support the transmission of multi - media file. the discussion module is a electronic white board which is based on network, it has been implemented by java language and java media framework ( one of java media apis )
本答疑係統由查詢和討論兩部分組成，查詢部分是一internet上的全文檢索系統，它採用三層結構的b / s模式，利用asp技術的內置組件ado 、第三方組件fileup和sqlserver7 . 0來實現，它能支持與問題相關的多媒體文件的上傳和下載，從而為查詢答疑提供了與問題相關場景（即音視頻信息）的支持；討論部分則是一網上實時交互系統，該系統是以java語言和javamediaapis （ applicationprograminterfaces應用程序介面）提供的jmf （ java多媒體框架）編程實現的網路電子白板，通過它能在ip網路上實現文字、圖形、圖象、音頻視頻信息的實時交流，使網上答疑變得直觀生動和高效The wavelets constructed on this new framework were nonlinear and suitable for image processing applications
根據該新框架構造的非線性小波在低頻和細節信號上都非常符合圖像處理的需要和特點。In chapter 2, a general digital watermarking frame is presented, including the generation, embedding and detection of watermark. in chapter 3, the concept of watermarking channel is presented, the modes of watermarking channel and image dct coefficients is proposed, the capacity of watermarking channel is evaluated by embedding watermarks to selected still image dct coefficients in direct spread spectrum. in chapter 4, a watermarking algorithms based wavelet multi - resolution is presented, by conjunction with human visual model, it keeps invisibility of watermark in host image and need not original image during detection
數字水印是一種新的數字媒體保護技術，它是將特定的信息（如版權信息、秘密消息等）嵌入到圖象、語音、視頻等各種數字媒體中，以達到版權保護等目的，同時，這種信息對宿主媒體的影響不足以引起人們的注意且有特定的恢復方法，此信息對非法接收者應該是不可見的，本文主要對數字水印的一般框架，靜止圖象dct系數的理論容量，圖象水印的嵌入和檢測，數字媒體防篡改以及數字水印的攻擊等問題進行了研究，提出了兩個新的水印算演算法。Zsk high, low - frequency shake frame screen applies to removing section and coarse select in the process of pulp - making
Zsk高、低頻振框篩用於制漿流程中的除節和粗選，可以將粗漿中的節子、塑料膜及未蒸解物與良漿分離。So the exploration of how to improve the interest of association rules became a novel and popular task in the research of association rule mining. several experts employed new measures to improve the contentness and interest of association rules without adopting support - confidence framework in association rule mining. under such backg rounds, this paper makes a study of the algorithmic framework of association rule mining based on conditional independences ; explores how to perform post - processing and how to improve the interest of association rules with constraints of conditional independences after the processing of traditional association rule mining
對關聯規則挖掘的研究又主要集中在頻繁集的生成優化和事物集的掃描次數兩個方面，並且主要基於支持度- - -可信度框架，由於這種框架的自身缺陷，使挖掘的關聯規則中用戶感興趣的卻不多，因此如何使用戶對挖掘的關聯規則更感興趣又成為一項新研究任務，不少學者不採用支持度- - -可信度框架，嘗試採用新方法來進行關聯規則挖掘，以提高用戶的滿意度和興趣度。There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor
本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。This article describes a way of special ultrasonic system which monitors thermal stress in seamless welded rails. this monitoring system is a non destructive testing system, which adopts avr mcu and high - precise time chip processing as the core of it, and adopts the critically refracted longitudinal wave as the object of measuring. my studying focuses on the theory of the monitoring system, which will be listed in this arctile : according to the snell theory, the theory of motivating of critically refracted longitudinal wave is described in details, and the finite element software is used to emulate the propagating course. the formulas of calculating the pts of swr are taken from the acoustoelasticity theory, and the calculating the parameters is introduced. according to assemble materials, three kinds of ways of monitoring the pts of swr using critically refracted longitudinal wave are described, which are measuring the sound - time in changeless distance, ultrasonic critical - angle refractomery and frequency spectrum, the first way of ways is used in this experiment system. the factors, which effect the monitoring system, are assaid in some degree based
本文的研究工作重點在無縫焊接鋼軌溫度應力測量系統的理論模塊，包括根據snell原理，研究極限折射縱波的激發機理，並使用有限元軟體ansys進行模擬;根據聲彈性理論以及公式推導出計算無縫焊接鋼軌中的溫度應力的公式，並對其中參數的求解方法進行介紹;根據收集的資料，介紹了三種使用極限折射縱波測量無縫焊接鋼軌溫度應力的方法，即固定距離測量聲時法、臨界角折射法和頻譜分析法，本實驗系統使用的是第一種;根據實驗經驗以及相關資料，分析了影響極限折射縱波測量溫度應力的幾個因素，並提出了相應的解決方法;根據實驗系統的需要，獨立設計並加工出相關配套的實驗設備，包括實驗鋼塊、有機玻璃楔塊、固定件、載荷外框裝置等。The subject makes an analysis on the theory frame of nowadays video retrieval, add the improvements to the traditional algorithms of printed character recognition, and realize the real - time text detection and character recognition on the complex background
本課題分析了現有的視頻檢索理論框架，並對傳統的文字識別演算法加以改進，實現了視頻幀中復雜背景下的實時文字檢測與數字識別。A low bit - rate video - coding scheme based on matching pursuit is built in this section
建立一個基於匹配跟蹤信號分解技術的低速率視頻編碼器框架。分享友人