信元時分復用 的英文怎麼說

中文拼音 [xìnyuánshífēnfùyòng]
信元時分復用 英文
ctdm cell time division multiplexing
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 復 : Ⅰ形容詞1 （重復） repeated; double; duplicate 2 （繁復） complex; compound Ⅱ動詞1 （轉過去或轉過...
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  • 時分 : 時分time:黃昏時分 at dusk; at twiligh; cock-shut time
  1. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  2. In those studying works, nano - composites of polymer were prepared for electromagnetic screening and transparent in military electronic units 、 apparatus 、 weapon equipments, electronic cabinets, to keep communications secrets for important offices 、 laboratory, designing technologic routes of inorganic nanoparticle / nano - composites of polymer, nano - stannum oxide, nano - indium stannum oxide were prepared

    本課題的研究針對軍用電子元器件、部件、武器裝備、方艙、通信保密、重要辦公室、實驗室需要透明同時防電磁波泄露的需求，採取無機/高分子納米復合技術路線，研製納米氧化錫、氧化銦錫/丙烯酸酯類聚合物納米復合材料。
  3. The subject has mainly finished designing and debugging software and hardware of a / d decode module, fpga video processing module, video data frame deposit module, base clock produce module, d / a encode module, i2c bus control module, etc. a / d decode module gathers analog tv signals and realize video decode ; fpga video processing module deals with the data after decoding and produces systematic logic control signal ; video data frame deposit module offers the buffering area to a large n umber of high - speed video data ; base clock produce module through input basic video signal offers system accurate relevant synchronous signal ; under control of video processing module d / a decode module convert digital video data into compound tv signal which can be shown in tv directly ; i2c bus control module is used to initialize the chip of system by simulating i * c bus timing

    本課題主要完成了a d解碼模塊、 fpga視頻處理模塊、視頻數據幀存模塊、基準時鐘產生模塊、 d a編碼模塊、 i ~ 2c總線控制模塊等部分軟、硬體設計及調試。其中a d解碼模塊採集模擬電視信號實現視頻解碼； fpga視頻處理模塊對解碼后的數據進行去噪處理的同時還負責系統的邏輯控制；視頻數據幀存模塊為大量高速的視頻數據提供緩沖區；基準時鐘產生模塊通過輸入基準視頻信號為系統提供精確的相關同步信號； d a編碼模塊在視頻處理模塊的控制下把數字視頻數據轉換成復合電視信號供顯示用： i ~ 2c總線控制模塊模擬i ~ 2c總線時序實現對系統中編、解碼晶元的初始化。
  4. There were three reasons : ( a ) the cronbach ' s alpha coefficient for raters on the 5 criteria ranged from 0. 83 to 0. 91, which indicated that all the raters shared approximately the consistent rating procedure ; ( b ) in the multivariate generalizability theory ( mgt ), the paradigm got the composite generalizability coefficient of 0. 784, which showed the whole measure of wisdom, relative to each of the 5 criteria, was reliable ; ( c ) the pearson ' s correlation coefficients between the 5 wisdom - related criteria and the 3 positive indicators of psychological well - being ( pwb ) were mostly significant, which indicated that the conception of wisdom did test the knowledge and skills about the real life just like the pwb

    為考察柏林智慧範式的測量信度，研究分別使用經典測量理論和概化理論計算信度指標，結果得到：克朗巴赫系數在0 . 83 - 0 . 91之間，說明智慧的五個特徵維度的評分者一致性都較高；多元概化理論的d研究得出的復合g系數為0 . 784 ，說明智慧測量的整體信度也較高。對于智慧測量的效度，研究選擇具備良好信、效度的心理健康狀況量表（中國修訂版）中的三個指標? ?幸福感、願望與實際所得的符合程度、以及自尊感，作為同時效標。
  5. In view of the present situation, in this paper, a new moisture analyzer which combines infrared drying oven and electronic balance is proposed takes dsp as the information processing unit. it presents the instrument structure and the hardware design of the system. it actualizes the temperature real time control in the drying equipment through controlling the power of the heater element and taking an complex control method

    針對這一現狀，本文提出了一種將紅外乾燥箱和電子天平相結合，利用dsp作為信息處理單元的水分測定儀;給出了儀器結構和dsp系統的硬體電路設計;研究通過對加熱元件的功率控制實現乾燥箱的溫度控制，採用智能復合控制策略對乾燥箱的溫度進行實時控制，乾燥箱的溫度達到105的時間可由單純pid控制的2分鐘減少到1分鐘，且控制精度高。
  6. With the demand for high quality of electric energy is increasing ， as the most immediate part to the consumer ， distribution network ’ s efficient and reliable operation is very important as the result ， new distribution automation equipment with high performance is inevitable prime machine system ， as data collection and processing subsystem of dms ， provides communication of kinds of information between control center and rtus it ’ s reliability ， real ? time abilitv and stability affect the scada system directly to solve the disadvantage of the existing system ， whose channels are dependent ， a new proj ect of single board system is brought forward and its hardware and software are designed with high performance chip of communication ， independence of channels is realized basic function of system is realized ， and faster reposition and expansibility of the single chip is fully applied

    配電自動化通信前置機作為dms主站系統的數據採集與處理子系統，提供監控中心與遠方rtu之間各種可能信息的交換功能，其可靠性，實時性和穩定性直接影響scada系統的運行質量。本課題針對現有前置機各通信通道之間不相互獨立、穩定性低的固有問題，提出一種新式單板前置機系統，並對其進行了軟硬體設計，選用高性能專用通信處理晶元，實現各通道獨立，並在實現前置機基本功能的基礎上，充分發揮單片機相對于工控機的快速復位功能以及更好的可擴展性，實現了一個可靠、穩定、靈活的前置機系統。
  7. Terrain slope information can be drawn from polarimetric synthetic aperture radar ( sar ) two - dimensional image, so that three - dimensional image can be generated. it differs from two - pass or repeated trace insar that uses interference phase method to obtain topography height. the p - sar three - dimensional image technology uses the stokes matrix formed by two - dimensional images resolution cells, then applying polarimetric synthesize to stokes matrix can produce polarization signature of the scatter cross - section a - (, x ) for any ( ellipticity ) and ( orientation ) polarization state

    這種方法不同於重復軌道和雙通道insar系統，不是利用干涉法提取高度信息，而是利用極化sar二維圖像各分辨單元的stokes矩陣，通過極化綜合估計每個分辨單元的共極化散射特性和交叉極化散射特性（極化指紋） ，以及共極化散射特性最大值時對應的極化橢圓度x利極化橢圓方向角，求解地形的高度輪廓。
  8. This approach needs one receiver with every antenna working in time - division mode, which uses the standard array signal processing algorithm to finding direction after recovering the multiple signals by interpolation

    此方法採用一個接收通道，各陣元以時分方式工作，採用插值的方法恢復出各路信號，然後運用陣列信號處理演算法進行測向。
  9. Abstract : on the basis of the interpretation of landsat tm pictures, incorporated with the referencing of the predecessors ' literatures and field investigation data, and also by means of computer technique and optical image processing, this paper makes an analysis of water resource in lunan area, more over, the author makes some important plans to developping and utilizing water resource in lunan area

    文摘:以水量平衡理論為依據，採用不同時相的tm圖像數據及多元信息復合技術對魯南地區沂源、沂水、沂南三縣（簡稱「三沂」 ）的地下水資源、地表水攔蓄條件進行調查分析，在此基礎上，提出了區域水資源綜合開發利用配置方案。
  10. However, to the essential of communication technology, those techniques are all change in transmission medium or channel. recently, because of the development of dsp, ifft / fft, 46 / 128 / 256qam using in high - speed modem, and gradual introduction of new coding technique, soft decision technique, channel self - adapting, guard interval, ofdm ( orthogonal frequency division multiplexing ) arouse more and more attention. as a technology of high - speed transmission, ofdm can resist isi effectively

    近年來，隨著dsp晶元技術的發展，傅立葉變換反變換、高速modem採用的64 128 256qam技術、柵格編碼技術、軟判決技術、通道自適應技術、插入保護時段、減少均衡計算量等成熟技術的逐步引入，正交頻分復用ofdm （ orthogonalfrequencydivisionmultiplexing ）作為一種可以有效對抗信號波形間干擾的高速傳輸技術，引起了廣泛關注。
  11. In this thesis, the principle of polarized light wave transmit in optical fiber is researched, i. e. principle of ternary optical fiber communication is researched. based on the researches, the construction of ternary codes optical end machine and 3b2t optical end machine used in two - state fiber net are designed. the construction and component of circuits in 3b2t optical ( called sign converter circuit - scc ) are designed particularly, including : the clock synchronization module, the data synchronizing, code converting module, frame managing module and error exam and managing module

    本文研究了線偏光波動理論以及在光纖中的傳輸原理，研究了三值光通信系統原理和器件原理；在此基礎上，設計了三值光端機和在現有兩值光纖網中實現三值光通信的3b2t三值光端機的組成結構，詳細設計了3b2t三值光端機的電路組成部分（稱為電信號變換電路scc ） ，包括：時鐘同步模塊、數據同步模塊、碼元變換模塊、幀處理模塊及差錯檢測和處理模塊；而且在三值光纖通信基礎上，提出了四值光通信的原理和偏分復用的實用化方法。
  12. Because of its ability not only to produce two - dimensional high resolution images of the scene illuminated, but also to measure complete complex scattering matrix for each resolution cell, and to operate under all weather conditions and all the time, day and night, a polarimetric synthetic aperture radar ( sar ) is playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers of the earth

    極化合成孔徑雷達（ sar ）能夠通過照射場景，對場景進行二維（方位向和距離向）高分辨力成像，同時測量出每個分辨單元的復散射矩陣。由於極化合成孔徑雷達具行全天候和全氣候工作的能力，使得極化合成孔徑雷達在採集地表及其覆蓋物的物理（電結構）細節信息方面起著越來越重要的作用。
  13. The thesis then introduces top - to - bottom schemes, which discuss the functional design of hdtv test pattern signal generator according to the tasks and platform of the system, and develops the function of subsystems. the thesis analyses the theory and mathematic model of hdtv test signal, and studies the signal generating scheme called single - fpga and multi - prom, and describes in detail its key modules such as configuration connecting, prom routing, control and switch timing design and so on. the single - fpga and multi - prom scheme increases the number of prom to reduce the degree of fpga demanded, thus

    論文分析了hdtv測試信號的原理及數理模型，提出了一種以單晶元多配置為特色的信號生成方案，並對該方案的配置連接、晶元選路、控制切換時序設計等關鍵模塊進行了詳細敘述，該方案以增加配置晶元數量來降低對主晶元要求，不但降低了產品成本，還使各測試信號的代碼編寫和產生相對獨立，有利於合理使用晶元資源，實現多種復雜的hdtv測試信號，縮短開發周期。
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