載頻頻段 的英文怎麼說

中文拼音 [zǎibīnbīnduàn]
載頻頻段 英文
carrier frequency range
  • 載 : 載Ⅰ名詞（年） year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 頻段 : frequency range; frequency channel
  1. 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。
  2. It is based on the platform of hardware of fpga, dsp, d / a to realize the concise and full - function digital variable bit rate test signal resource. this paper discuss the ways of full digital if and realize it, certainly the ways to realize the carrier frequency, sub - carrier frequency and variable bit rates with dds technology is also presented

    本課題是以fpga 、 dsp 、 d / a為硬體平臺，設計實現了結構簡明，功能完整的全數字可變速率測試信號源，討論並實現了中頻頻段如何實現全數字的方法以及用dds技術實現載波頻率，副載波頻率，碼速率的方法。
  3. Assuming the loop is known to be only a single straight segment of 26awg cable, there is no additive loop or afe noise, and the remote - end is terminated by a high - impedance load for all frequencies, figure 5 shows the resulting selt performance

    假定已知環路只有一個單個的直段26awg電纜，沒有附加的環路或者afe噪聲，對所有的頻率遠端通過一個高祖抗負載終止，圖5給出了selt的性能結果。
  4. Based on the analysis of commercial banks " current concept about fund management, this paper brings forward that fund management is the main - string in its operation, and that the concept of fund management, including security and profitability, is extended from current " forrying fund " to the management of the fund cost and fund risk the paper comprehensively discusses the principle of fund management, the management of fund costs, the tactics of management about fund liquidity, the measures of management about fund risks and how to solve the problems on interest risk in the period of frequent interest fluctuation. the paper puts forward ideas on how to improve the fund management. the security, liquidity and profitability of the fund, which are both contradictory and integrated with one another, are internal factors of fund management. fund liquidity is traditional core question. commercial banks face with a number of risks of witch credit risk is the greatest one because our country has adjusted interest rates 8 times since 1996, which covered a period of frequent interest fluctuation

    商業銀行面對許多風險，但最大風險是信用風險。由於我國自1996年以來已連續調整了8次利率，近幾年是利率波動頻繁時期，研究利率的敏感性問題顯得特別重要。要改善資金管理，提高商業銀行的經營水平，就要建立資金管理是商業銀行經營主線的理念，對資金要統一規劃和管理；要改革銀行的體制，建立現代企業制度和法人治理結構，在體制上為資金管理提供有利的運行平臺；增加改善資金流動性管理所需的貨幣政策工具，擴大資金調控手段；打破貨幣市場的僵化局面，為資金管理創造有利的宏觀環境；續續優化負債結構和負債載體設計；增強資金信用風險規避和化解的措施；通過銀行資源整合，努力尋找資金的安全投放渠道，最終完成經營模式由傳統型向現代型的轉變。
  5. Basing on rc simple supported beam the study of the paper is modal analysis using the finite unit software ansys, and the relationship among the transformation of vibration frequency, value of attached load, position of attached load, degree of damage, position of damage is discussed

    本文利用大型有限元軟體ansys針對工程常用的鋼筋混凝土梁橋進行了模態分析，討論了振動頻率的變化與附加荷載大小、附加荷載位置、破損程度、破損位置之間的關系，研究了混凝土梁橋從完整階段到破壞階段振動頻率的變化規律。
  6. Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band

    在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。
  7. In the dissertation, the rf characteristics of the periodically iris - loaded elliptical waveguide used in slow - wave structure is discussed. the structure has potential applications to high - power microwave devices and filtering networks at millimeter wave frequencies

    在本論文里，我們討論了周期膜片加載橢圓波導作為慢波結構的射頻特性，這種結構有可能應用於高功率器件和毫米波段的濾波網路。
  8. Short - wave communication is the most important scheme in military communication. with the fast development of various new technology and new systems, such as dsp technology, micro processing technology, frequency - hopping technology, error correction technology, short - wave communication has already been widely applied in military communication, marine communication, board communication and so on

    短波通信是現代軍事通信中最重要的通信手段，隨著隨著數字信號處理（ dsp ）技術、微處理技術，自適應技術、跳頻技術，糾錯技術，分集技術等各種新技術和新體制的飛速發展，短波通信已廣泛應用在軍事通信、海上通信、機載通信等各方面。
  9. The content of this theme is as follows : without time, without open, without stopping railway transport, and without interrupting traction current of block tested, meanwhile track circuit parameters in electrical and no electrical blocks is measured of on - line, dynamic and real - time. these parameters include voltage of fsk signal, voltage of industrial and harmonic wave interference, upper frequency, lower frequency, carrier frequency and low frequency 18 messages frequency

    本課題研究內容：在不要點，不開天窗，不中斷行車，不中斷被測區段牽引電流的情況下，在線、動態、實時測量電化區段和非電化區段的移頻信號電壓、工頻干擾電壓，移頻信號（調頻信號）的上邊頻、下邊頻、載波頻率、以及低頻18信息頻率等參數。
  10. First, the system converts the received tv program signals into mpeg file with video capture card, cut the mpeg file into several short mpeg files according to the content of the program and establish index for them. then, it transports the short mpeg files to jukebox server. the jukebox server with responsibility for discs management, it record the program material into discs and provide service for clients visit the program online

    系統將接收到的衛星電視信號通過視頻採集卡，把它採集成mpeg文件，再根據節目內容將mpeg文件分段成小的節目素材文件並建立檢索索引，然後將它傳遞到光盤庫服務器；光盤庫服務器負責光盤的管理，它一方面將節目素材文件刻錄到光盤上，另一方面為客戶機提供在線訪問服務；客戶端根據一定檢索條件進行檢索，獲得所需的節目素材文件，並下載到本地，本地的媒體編輯軟體直接對mpeg文件進行編輯，生成新的節目。
  11. The final results show that the performance of pneumatic load - simulator is satisfying, and the superfluous force, though there exists, is small

    實驗結果表明氣動負載模擬器在低頻段有較好的力跟隨特性，盡管在氣缸換向時有多餘力的產生，但幅值較小。
  12. ( 1 ) the dissertation theoretically analyses software direct compensating motor speed loss of open loop pump - control - motor speed governing system with inverter. the motor speed loss formula and compensating coefficient formula are given, and this provides the theoretic foundation for using software direct compensating method. the dissertation puts forward the control scheme of software direct compensating motor speed loss of open loop pump - control - motor speed governing system with inverter, and the method of " load sectionalization linear compensation "

    具體來說，本文的主要貢獻包括如下幾個部分： （ 1 ）對軟體直接補償開環變頻泵控馬達調速系統的馬達轉速降落進行了理論分析，給出了馬達轉速降落公式和補償系數公式，為軟體直接補償開環變頻泵控馬達調速系統的馬達轉速降落提供了理論依據；提出了變頻泵控馬達調速系統的負載補償控制方法和「負載分段線性補償」方法，由此提高了調速系統的速度剛性和調速精度。
  13. However, in hf band, the band of the antennas is narrow, and the input impedance of monopole antenna with limited height undergoes rapid variation with frequency

    但是，在hf頻段，有限高無加載單極子天線帶寬相對較窄，輸入阻抗隨頻率劇烈變化，難于和50的同軸饋線匹配。
  14. This scheme has been used in the project of “ multi - band, multi - mode digital ultrashort wave radio ” and “ software radio data transmission radio ”

    該方案已經應用於某公司的「多頻段、多模式機載數字超短波電臺」和「軟體無線電數傳電臺」的項目中。
  15. ( 2 ) according to digital simulation about system, the reason to produce disturbance torque is described. then, pid control strategy is proposed and invariance theory is introduced to decrease the disturbance torque which is caused by motion of loaded object

    本文的目的就是針對現階段對電液伺服加載系統提出的進一步有效抑制多餘力矩和展寬系統頻帶等要求，分析和研究影響其性能的主要因素，以找出滿足要求的解決方法。
  16. Experimental result shows that electrical - resistance strain gages can respond well in the frequency range of artificial excitation by impact hammer, at the same time, the experimental scheme brought forward in this paper makes the experimental setting simple and can be manipulated easily as well as can display the excitation and response expediently and synchronously on digital oscillograph. the impact hammer can implement half - sine load

    結果表明，電阻應變片在力錘激勵頻段內可以有很好的響應，從而使實驗裝置簡單，方便操作和使用；同時實驗結果顯示出本文採用的實驗方案可以方便地將激勵和響應同步地顯示在示波器上，並且利用力錘可以實現規則的半正弦加載。
  17. The modal analysis result shows that the vertical and horizontal frequencies of dps undeployed are high enough and suffice the dynamic stiffness requested for launching. but the large spread length and light weight effect the low frequency of dbs deployed, so considerations should be taken to the effects of other systems of the satellite. the static analysis result shows that the displacements of the dbs are small under the joint affect of vertical and horizontal loads, and stresses are low, so the stiffness and intensity are good enough

    模態分析結果表明伸桿收攏狀態的軸向和橫向頻率都比較高，可滿足發射升空時的動剛度要求；靜力分析結果表明伸桿結構在衛星處于發射段和上升段時，在軸向和橫向過載聯合作用下變形均較小，剛度足夠；其應力水平亦較低，強度儲備較大。
  18. It has large ratio of deploying / stowed volume. it may be used as sar antenna for small satellite or as other communication antenna of s or l band. the structural system configuration and key components design are described

    它具有展縮比大，重量輕和頻段寬等特點，可用於小衛星合成孔徑雷達天線和其它s 、 l頻段星載通訊天線。
  19. Cdma ( code division multiple access ) technology is used in communication system abroad because of its merit, people use cdma technology to transmit data, image and also other different information in different sub - frequent bands of a broad channel. so a research, which combines multi - carrier signal processing and cdma technology and processes different sub - frequent bands signal at same time, is full of practicable value

    Cdma技術由於其優點被廣泛採用在通信系統中，人們在一個寬帶通道的不同子頻段上使用cdma技術傳輸數據、圖像等不同信息，所以將多載波信號處理與cdma技術聯系起來進行研究，並且同時將不同的子頻帶信號進行處理是一個很有實用價值的問題。
  20. Using the model parameter from the dynamical experiment, the integrated parameters can be disassembled, thus the structure ' s frequency and the influencing coefficient of their oscillation mode are solved. it ' s tested from the model experiments and fem that the model given by the article has the virtue of explicit concept and convenient method and high accuracy, and it can give reference to evaluate the load capacity of bridge. in the end, in order to assess the existing bridge ' s seismic resistance performance, force reduction factor with ductility is recommended to reflect the seismic force of the structure during the elastic and plastic periods

    另一方面，由動力相似理論建立了室內模型，並進行室內動力試驗，藉助量測到的模態參數分解出綜合參數，可以反推結構頻率及振型參與系數。試驗結果、有限元計算值表明，本文建立的模型概念明確、計算方法簡便、精度較高，可以為動測法評定橋梁結構承載力提供參考。最後，從延性的角度給出強度折減系數來考慮結構進入彈塑性階段的地震力，從而對橋梁的抗震性能做出評價。
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