數字信號標準 的英文怎麼說

中文拼音 [shǔzìxìnháobiāozhǔn]
數字信號標準 英文
digital signal standards
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  • 標 : Ⅰ名詞1 [書面語] （樹梢） treetop; the tip of a tree2 （枝節或表面） symptom; outside appearance; ...
  • 準 : Ⅰ名詞1 （標準） standard; guideline; criterion; norm 2 （目標） aim; target Ⅱ動詞1 （依據; 依照）...
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  • 標準 : （衡量事物的準則; 榜樣; 規范） standard; criterion; benchmark; pip; rule; ètalon （衡器）; merits
  1. Digital enhanced cordless telecommunications dect - common interface ; test case library - part 9 : abstract test suite for network layer ; fixed radio termination endorsement of the english version ets 300497 - 9 v 0. 3. 2 1

    代碼字符集;信息;編碼數據轉換;信息交流;字符集;數據處理摘要本標準規定了由128個字元控制字元和圖形字元，如：字母數字及符號組成的字符集以及它們的編碼表示。
  2. Nowadays, the tv guidance technique using analog signal in the procession of transmission has been mastered proficiently, the conventional analog signal is gradually replaced by the digital signal, because it has many disadvantages, such as its need for wider bandwidth ( 6mhz ), the fact of being vulnerable to the noise, its hardware system is very complex and very hard to establish a common standard, while it also has some problems in the system using digital signal, the main problem is its huge volume of data

    視頻信號可分為:模擬信號、模擬和數字信號並存、數字信號。目前，傳輸過程中使用模擬信號的電視制導技術已經比較成熟，但其固有的缺點是:傳輸模擬視頻信號所需帶寬較寬（ 6mhz ） ，傳輸過程易受干擾，且硬體系統復雜，不易標準化，使得其逐漸被數字信號所取代。
  3. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式，並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號，採取鎖相環頻率合成技術手段;對于頻率調制，採用壓控振蕩器;對于解調電路，採取鎖相環鑒頻電路。
  4. A scheme that to use digitalized catv signals in some inner areas while to use microwaves in some areas for where with no probability using the cable network, which is an extraordinary perfect transition measure, efficiency, economy and a shortcut, before the digital television terrestrial broadcasting standards come into practice

    廣播電視部門在地面廣播標準尚未出臺、直播衛星也未開通以前，採用有線電視的標準，利用有線電視數字電視信號，通過微波在有線網路之外進行無線補充覆蓋，高效、經濟、快捷，是一個非常理想的過渡辦法。
  5. Standards of digital tv broadcast has specified transmitting systems which are based on various medium such as satellite - oriented transmitting system ( dvb - s ), cable - oriented transmitting system ( dvb - c ), terrestrial - oriented transmitting system ( dvb - t ). different system adopts different methods of channel codec, modulation and demodulation, but for signal source block codec, only mpeg - 2 standard has been applied for all the systems. as a compression standard being specified in digital tv broadcast transmission, mpeg - 2 has been widely involved on compression occasion

    對于數字電視信號的傳輸，數字電視廣播標準制定出基於多種媒質傳輸的傳輸系統，如衛星傳輸系統（ dvb - s ） ，電纜電視傳輸系統（ dvb - c ） ，地面廣播（ dvb - t ） ，不同的傳輸系統制定不同的通道編碼和調制解調的方法，但是對于所有傳輸系統的信源編碼則一律採用mpeg - 2這一標準。
  6. Qpsk modulation for digital television using advanced digital signal processing technology, full compliance with dvb - s standard, the receiving end can be directly used for receiving digital satellite receiver. it must not only be able to achieve a higher utilization of the spectrum, with a strong anti - jamming and high performance. fm microwave equipment and simulation and will be good compatibility

    Qpsk數字電視調制器採用了先進的數字信號處理技術，完全符合dvb - s標準，接收端可直接用數字衛星接收機進行接收。它不但能取得較高的頻譜利用率，具有很強的抗干擾性和較高的性能價格比，而且和模擬fm微波設備也能很好的兼容。
  7. The signal testing unit examines directly the production parameter - the belt " s velocity and sends out electrical signal similar to sine wave. the signal handling and analyzing unit disposes of the sensor " s output signal by amplifying, plasticisering a / d transforming and measuring and displays it digitally. after the alarming and controlling unit compares the testing signal with the standard one and analyses, it will show the normal production situation or alarm at the abnormal state and control the related equipments if it is necessary

    信號檢測單元直接檢測皮帶速度，並輸出近似正弦波的電信號：信號處理與分析單元對傳感器輸出信號進行放大、整形、 a d轉換和計算等處理，並進行數字顯示；預警、報警、控制單元將信號與標準信號進行比較，經分析后顯示正常狀態或對異常狀態進行聲、光預警、報警。
  8. The system generates 18 kinds of worldwide used hdtv test pattern signals supported by smpte 274m standard, and also provides ypbpr, rgb video outputs both in digit and analog and the output interfaces of itu - r bt. 1120 - 2 / gy / t157 - 2000 studio hdtv digital video signal interface standard

    該系統生成了符合smpte274m國際標準的18種普遍採用的hdtv測試圖案信號。它提供ypbpr 、 rgb兩種視頻數字輸出與模擬輸出，其介面符合itu - rbt . 1120 - 2 / gy / t157 - 2000演播室高清晰度數字視頻信號介面標準。
  9. In the hardware system, we capture four channels video signal based on ccir601, and then combine them into one stream

    硬體系統將對四路模擬視頻信號進行採集，採集得到的數字視頻信號符合ccir601標準，然後將四路視頻信號整合成一路視頻。
  10. When dicussing reliability design and reliahbaiiy ensuring methods, a new reliability calculating model of petroleum logging tools is presented, reliability assurimg technologies should be taken in petroleum logging tools and their using approaches are presented and stated from electricity design and mechanical design, reliability system model of petroleum logging tool is set up according to the latest reliability theory, reliability indexes of petroleum logging tool and their acquiring ways are discussed, the reconmended reliability indexes ( mwture, nolwnm, mtbf, mttf ) of petroleum logging tool are presented : the mean working time under rated error ( mwture ) of the new tool is obtained through experiments. when studying data processing methods, the property of gamma - ray signal is stated and the type of it ' s measuring error is examined using statistical method, the basic theory of digital filtering and the basic situation of digital filtering methods are introduced and analyzed, the factors affecting digital filtering effect to gamma - ray signal and the effect of digital filtering to logging curve are analyzed, the evaluting criteria ( rvi, rmse, sfi ) of digital filtering effect are set up from two aspects, named as real value acquiring of steady section and the formation boundary checking and processing, the related filtering methods and examining methods are given out. the design methods of digital filter used to process gamma - ray signal are discussed, the mixed filtering scheme of natural gamma - ray log is presented, the realization ways are discussed. the selective filtering system and it ' s realization flow are given out through quantitive reseaching to part of digital filters, three new filtering sheme will be used to process gamma - ray signal in era2000 logging system

    在探討可靠性設計與可靠性保障技術時，提出了石油測井儀器的可靠性計算新模型，從電氣和機械兩個方面，提出並闡述了應採用的可靠性保障技術及其使用方法：根據最新可靠性理論，建立了石油測井儀器的可靠性系統模型，探討了石油測井儀器的可靠性指標及其獲取途徑，提出了推薦使用的石油測井儀器可靠性指標（ mwture ， nolwnm ， mtbf ， mttf ） ；通過試驗，得到了所設計儀器的穩定工作時間（ mwture ） 。在研究數據處理方法時，闡述了伽瑪信號的特徵，對測量誤差類型進行了統計檢驗；介紹了數字濾波的基本理論、數字濾波方法的概況，並進行了分析；對伽瑪信號數字濾波效果的影響因素及其對測井曲線的影響進行了基本分析；從獲取平穩段真值、地層邊界的檢測與處理兩個方面，建立了數字濾波效果的評價準則（ rvi ， rmse ， sfi ） ，給出了相應的數字濾波方法及效果評價方法；探討了自然伽瑪信號數字濾波器的設計方法，提出了適合自然伽瑪測井的混合濾波方案，探討了混合濾波方案的實現途徑；通過對部分數字濾波方法的定量研究，給出了靈活可選的數字濾波系統構成及實現流程；提出的三種濾波方案，將用於era2000成像測井系統，對自然伽瑪測井數據進行濾波處理。
  11. Based on iec standards, the methods of designing square demodulator, bandpass - weighted filter, and smoothing filter are presented. besides, the signal conditioning circuits and online statistical analysis methods of instantaneous flicker value are given. matlab simulink is also used to simulate the measuring process of voltage fluctuation and flcker

    基於iec標準要求，設計了實現數字式電壓閃變測量的平方解調器、帶通加權濾波器、平滑濾波器等各環節，給出了信號調理電路和瞬時閃變值在線統計分析方法，並應用matlab系統模擬工具simulink對電壓波動和閃變測量全過程進行了數字化模擬。
  12. Aees employs the multi - staged digital filter algorithm to reduce random error. meanwile, the system correct zero deviation through linear opreation. the instrument, from hardware aspect increases the feature of anti - interference by the way of reasonable layout, sepration of digital and analogue

    系統採用了中值濾波和滑動平均濾波相結合的多級數字濾波演算法來減小隨機誤差，並以精密基準電壓作為比較信號的輸入，由智能系統通過線性運算，實時地修正、校準測量數據，減小系統的零漂，實現自動定標並提高測量的精度。
  13. Is a vesa standard data format that contains basic information about a monitor and its capabilities, including vendor information, maximum image size, color characteristics, factory pre - set timings, frequency range limits, and character strings for the monitor name and serial number

    是一種vesa標準數據格式，其中包含有關監視器及其性能的參數，包括供應商信息、最大圖像大小、顏色設置、廠商預設置、頻率范圍的限制以及顯示器名和序列號的字元串。
  14. Aim at the development of the software radio in generalization, standardization and modularization, a waveform synthesis solution based on direct digital frequency synthesis is developed

    針對國內外軟體無線電技術對通用、標準、模塊化的硬體平臺的需求，本文提出了一種基於直接數字頻率合成原理進行信號數字域調制的波形合成器設計方案。
  15. In practical application, due to the parameter accuracy of two point temperature correction is limited by readout circuit noise 、 dynamic range 、 analogue to digital converter word length and calculating noise, the performance of focal plane array detector is not the performance it should be

    目前實用性較好的兩點溫度定標法的校準系數精度受讀出噪聲、信號動態范圍、模數轉換字長和運算噪聲的限制，很難使焦平面探測器的空間殘留噪聲達到應有的精度。
  16. Also, this thesis brings forword reasonable testing methords according to the actual project. in this test system we assign the output signals of the power electric chest though a tua ( testing unit allocatee ). the automatic test system is composed by an industrial computer, five pci switch modules, a pci digital multimeter and two load chests

    按照標準分析所得的測試項目和測試方法，本系統通過測試單元適配器（ tua ）對被測系統信號進行調理和分配，由工業計算機、程式控制開關卡、數字多用表卡、負載箱等組成基於pci總線的自動測試系統，對被測電源電子箱進行測試。
  17. Dicom ( digital imaging communication in medicine ) is a typical symbol of the two subjects, which " is a synthetic application of computer, network, digital signal processing, store technology

    Acr和nema聯合制定的icom標準就是新型學科的典型代表。它是計算機，網路通訊，數字信號處理，存儲技術的綜合應用。
  18. On the other hand, recent advances in communication and modulation methodologice, as well as in adaptive digital signal processing and error detection and correction, have opened the way for the development of effective medium access control and physical layer protocols that support power line communications ( plc ) networks operating at speeds comparable to those obtained from specially wired and more recent wireless local area network in mid - 2001, an industrial standards organization called the homeplug powerline alliance, originally founded by 13 companies including cisco, motorola, intel, panasonic, and texas instruments, announced the completion of the homeplugl. o specification for a l. 0mb / s class in - home power line networking technology based on orthogonal frequency - division multiplexing ( ofdm )

    但是，近年來通信和調制技術的發展，特別是自適應數字信號處理和錯誤檢測及糾正技術，使電力線通信技術出現新的mac層和物理層協議，其性能可以和一些專用有線網路以及最近十年流行的無線局域網技術想媲美。在2001年，一個由13個公司（包括cisco ， motorola ， intel ， panasonic ， andtexasinstruments ）組成的組成的標準組織? ? homeplugpowerline聯盟，頒布了完整的homeplug1 . 0規范，改規范使基於正交頻分復用技術，主要針對10mb s室內電力線網路技術。
  19. Some typical luminance and chrominance measurement instruments will be mentioned in this chapter, too. chapter three will focus on the global structure of this system and analyze the select of detector and processor. also, the difference between relatively spectrum response of the cmos image sensor - ov7620 and cie standard observer relatively spectrum response will be given in this chapter

    第三章闡述了本系統的總體結構，對本系統的cmos圖像傳感器和核心處理器? ?數字信號處理器（ dsp ）的選擇做了詳細的分析，並且給出了本系統所使用的傳感器? ? ov7620的光譜相對響應曲線與cie標準觀察者三刺激值曲線的差異。
  20. The major part is to construct a software system framework on the basis of embedded real time operating system software dsp / bios and rf5 ( reference framework 5 ), then encapsulate detect codec with express xdais in

    重點研究了基於實時嵌入式實時操作系統底層軟體dsp / bios以及參考框架結構（ rf5 ）編寫識別跟蹤演算法程序，並按數字信號處理器演算法標準（ xdais ）要求進行封裝，最終嵌入到主程序框架中。
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