標準信號源 的英文怎麼說

中文拼音 [biāozhǔnxìnháoyuán]
標準信號源 英文
standard signal source
  • 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）...
  • 號 : 號Ⅰ名1 （名稱） name 2 （別號; 字） assumed name; alternative name3 （商店） business house 4 （...
  • 源 : 名詞1. （水流起頭的地方） source （of a river）; fountainhead 2. （來源） source; cause 3. （姓氏） a surname
  • 標準 : （衡量事物的準則; 榜樣; 規范） standard; criterion; benchmark; pip; rule; ètalon （衡器）; merits
  1. The concept of " timing " in the article is not the clock in our ordinary living, but syntheses which is made up of some frequency source in the signal generator ( such as cs atom frequency standard, rb clock & high accuracy quartz crystal oscillator ) which produces the primary frequency, the matching input interface and the matching output interface and controlling circuit etc. for example, bits is a kind of timing equipment, which is used to control the timing of some functions

    本文論及的「時鐘」概念不是指日常生活中使用的鐘表，而是由產生基準頻率的信號發生器（如銫原子頻率標準、銣鐘及高精度石英晶體振蕩器等）中的某種頻率源以及相配套的輸入、輸出介面和控制電路等組成的一整套具有特定同步定時功能的綜合體。如bits就是一種時鐘設備，它提供用在通信系統中控制某些功能的定時的時間基準設備，時鐘提供的信號稱為基準信號、定時信號或同步信號。
  2. 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。
  3. In the second chapter, equivalent circuit of the eddy current sensor is firstly analyzed. based on that, the carrier signal generating circuit that is realized by the lc periodic circuit is introduced, thus, the carrier signal of standard frequency is obtained through the trimming capacity. subsequently, the disc type rotational armature generator and the rotational coupling transformer are separately leaded in to realize the power supplies of the carrier signal generating circuit and output of the measuring signal

    在傳感器設計一章中，首先對渦流傳感器進行等效電路分析，在此基礎上分析了由電感、電容諧振電路構成的載波信號發生電路，並通過微調電容獲得了標準頻率的載波信號；接下來提出了採用盤式旋轉電樞發電機解決載波信號發生電路電源供給問題的方案，同時通過旋轉耦合變壓器的引入，使得測量信號輸出問題很好地解決；本章最後給出的一組實驗曲線充分說明了這一方案的可實現性。
  4. Knowledge about the faults of a process control system is obtained automatically by rough set reduction. an entropy - based criterion is used to measure the uncertainty of it. methods of forward and backward fault diagnosis and how to build up decision tables for each fault source are given

    利用粗糙集進行故障知識的發現，尋找系統各個故障源信號之間合理的邏輯關系，提出了一種構造邏輯故障樹的智能方法，並給出了相應的故障樹評價標準。
  5. The device can also be used as a signal generator to provide the input of the other radar system

    該設備也可作為一種簡易實驗平臺為雷達系統提供標準信號源輸入。
  6. Accuracy of the measurement system is verified by standard signal sources. frequency tracking error does not reach 50hz. the measurement system has merits of visual display and high accuracy, which is an ideal measurement system for dual - path saw mass sensor

    應用標準信號源驗證了測量系統的精確性，頻率跟蹤特性誤差在50hz以內。該測量系統顯示直觀，精度高，是雙聲路聲表面波質量傳感器理想的測量系統。
  7. When using a line feed, telescope operators produce a unified signal by adding up the different parts of the signal, but the results are never as strong and clear as they are with a parabolic dish

    使用線形饋源時，操作者產生一個標準信號疊加到信號的不同部分，但是結果從不會像使用拋物面碟面得到的那樣強大、清晰。
  8. Current voltage isolated conversion module is a kind of miniaturization insert type construction conversion module, between its supply power input signal and output signal are isolated each other, its input ac voltage or ac current can be transformed into ma or v standard signal output. it has accuracy high, linearity good, debug simple, work stable and reliable and so on features, apply to electricity parameter display, record and monitor of the dcs system fields

    電流電壓隔離轉換模塊是一種小型化插裝式結構的轉換模塊，其具有工作電源輸入信號輸出信號三者相互隔離，能將輸入的交流電壓或交流電流轉換成420 ma或15 v標準信號輸出，具有精度高，線性好，調試簡單工作穩定可靠等特點，適用於電量參數的顯示記錄dcs系統的監控等場合。
  9. The analysis is also given on the sphere of application, the complexity of computation. after the extraction of the precise tdoa signal, it is the major problem

    在提取到準確的時差信號后，論文第四部分就如何獲取精確的目標輻射源位置，即定位演算法進行了研究，主要分析了非線性定位方程組的求解技術
  10. Secondly, basing on the theory of on - off gain of small signal, the raman gain coefficient for frequency shift between 0. 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source. thirdly, numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method. at the invariability of wavelength and maximum power of each of two pumps, schematic of powers of two pumps for best flatness on c band wdm optical gain was found out, at the same time, the factors of resulting in gain saturation is analyzed, too

    本文首先應用經典的電磁理論對拉曼光纖放大器的工作機制進行了分析，然後，根據小信號理論推導出的開關增益求出了光纖拉曼增益系數的表達式，採用泵浦-探測波的方法，利用超輻射激光二極體（ superluminescentdiode簡稱sld ）作為探測光源，測量了所用標準單模光纖頻移為0 . 5 - 20thz的拉曼增益系數，之後根據所測得的光纖的拉曼增益系數譜對應用該類光纖構成的放大c波段wdm光信號的拉曼光纖放大器的增益特性採用打靶法和四階龍格- - -庫塔進行了數值計算，在給定了兩個泵浦光源的波長和最大功率后，找出了反向泵浦情況下使c波段wdm光源增益最平坦的兩個泵浦的各自最佳功率，同時也分析了導致信號光飽和的原因。
  11. 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。
  12. In this disseration the author researched the testing of gsm mobile telephone of the wireless instrument test and carried out it. the work that i shoud do is acquire the testing content 、 standard and method of test of the gsm mobile telephone, then write the driver program of the cmu200. first acquaint the communication system of gsm ; second introuced and analysized the technology of the software and hardware of control the programmable instrument, which include ieee 488 ( gpib ) standard bus 、 scpi ( standard commands for programmable ) and visa ( virtual instrument system architecture ) ; third reaserach the technology of software, it employs visual c + + 6. 0 as application development platform because of its powerful function, universality and programming and employs com module because of its characteristic 、 superiority ; the last ascertain the testing item and its standard 、 mehtod through searching the principle of gsm mobile and its testing criterion and select the programble instrment for testing according to the mobile telephone demands, which include cmu200 ( universal radio communication tester ) 、 e4445a ( spectrum analyzer ) 、 e4438c ( signal generator ), all of this build the platform of testing. i realize the automatic testing of gsm mobile telephone by using com module and visa 、 scpi

    論文中首先了解了gsm通信系統及其關鍵技術;再者研究分析了可編程儀器控制的軟硬體技術，包括ieee488 （ gpib ）標準總線、 scpi （ standardcommandsforprogrammableinstruments可編程儀器標準命令）和visa （ virtualinstrumentsystemarchitecture虛擬儀器軟體架構）為對可編程儀器進行驅動編程打下基礎;第三步研究了軟體實現技術，對組件的優勢和com的特點進行了分析確定採用com組件技術來完成驅動模塊;最後根據移動臺測試要求選擇可編程測量儀器cmu200綜測儀、 e4445a頻譜儀、 e4438c信號源和一臺測量控制計算機搭建起了測試平臺，研讀可編程儀器cmu200綜測儀的scpi命令和visa （虛擬儀器軟體架構） ，根據gsm移動臺測試方法在vc開發平臺下採用com組件形式完成對cmu200的驅動編程從而實現對gsm移動臺的自動測試。
  13. The data compession technology is researched, and the problem is solved which quanties of fault recording data are huge and the sending time is long. the transmission success ratio is boroved greatly. the electrical relation of single phase - earth fault of generator stator windings is ndied in detail, and the process of generator losing magnetism faul is also discussed

    利用該標準記錄數據中的冗餘量，進行壓縮是一新思路，對無損壓縮和有損壓縮進行了大量模擬，採用信號源符號1byte的自適應二階算術編碼無損壓縮法，使遠傳數據壓縮率可達72 ，解決了錄波數據遠傳中數據量大、傳送時間長、成功率低的難題。
  14. Is a kind of miniaturization insert type construction conversion module, between its supply power input signal and output signal are isolated each other, its input ac voltage or ac current can be transformed into ma or v standard signal output. it has accuracy high, linearity good, debug simple, work stable and reliable and so on features, apply to electricity parameter display, record and monitor of the dcs system fields

    是一種小型化插裝式結構的轉換模塊，其具有工作電源輸入信號輸出信號三者相互隔離，能將輸入的交流電壓或交流電流轉換成420 ma或15 v標準信號輸出，具有精度高，線性好，調試簡單工作穩定可靠等特點，適用於電量參數的顯示記錄dcs系統的監控等場合。
  15. The pulse / pattern generator has been wildely used in modern measuring and controlling fields, it can generate kinds of standard pulse signals and programmable user data to meet some special digital measuring requirements. and the digital waveform generating part, which can generate digital waveforms in given working modes, is the core of a pulse / pattern generator

    脈沖/數據發生器是現代測量與控制中常用的信號源，它可以產生各種標準的脈沖波形和具有一定編碼規則的用戶數據，用來滿足特定數字測試要求，而數字波形產生部分是脈沖/數據發生器中的核心部分，承擔著產生各種模式的脈沖數字波形的任務。
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