混合高頻系統 的英文怎麼說

中文拼音 [húngěgāobīnxìtǒng]
混合高頻系統 英文
mixed high system
  • 混 : 混形容詞1. （渾濁） muddy; turbid2. （糊塗; 不明事理） foolish; stupid
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 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...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 混合 : （攙雜在一起） mix; blend; mingle; admix; mixture; mix up; interfusion; commixture; blending; cre...
  • 高頻 : high frequency
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. In this system two oscillator are used for mixing. pll for high local oscillator and dds + pll for low local oscillator. by making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution, high frequency accuracy, very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step

    系統採用兩次混頻，其中高本振的設計採用pll鎖相環頻率合成來實現，充分發揮了鎖相環頻率合成器的優良特性，實現了系統所要求的高質量寬頻帶本振源；低本振採用pll + dds頻率合成來實現，結合pll優良的鎖相特性與dds的高頻率解析度、高頻率精確度等優點，實現了頻率的小步進高精度合成。
  2. Supported by heilongjiang province natural science foundation projects " research on the errors mechanism of time division a. c. power measurement " ( no. e9719 ), " research on theory of analog digital mixed sampling power energy measurement " ( no. e01 - 15 ) and foundation for university key teacher by the ministry of education " the research on the low audio frequency a. c. power measurement smart instrument " ( no. 1087 ), in this dissertation it is made that a systematic and deep study on power measurement model errors and instrument errors about analog sampling, digital sampling and mixed sampling measurement, and fully experiments about mixed sampling measurement

    本學位論文在黑龍江省自然科學基金資助項目「時分割交流功率測量原理誤差產生機理的理論研究」 （編號： e9719 ） ， 「模擬數字混合採樣功率與電能測量的理論研究」 （編號： e01 - 15 ）和教育部高等學校骨幹教師資助計劃項目「中頻電功率測量智能儀器的研製」 （編號: 1087 ）的資助下，以電功率模擬采樣測量、數字采樣測量和混合採樣測量方法為對象，對電功率測量的原理誤差和儀器誤差進行了系統和深入的理論研究和有關的實驗研究。
  3. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  4. On the basis of high speed hybrid filter banks adc system, a kind of downsampler model based on bandpass sampling theorem is presented, and analyzed, proved in time and frequency domain, in addition a downsampler is designed according to the model. a class of high effective hybrid filter banks adc system which bases on the downsampler and radio frequency spectrum is proposed, of which digital signal rate falls m times as fast as the former

    作者提出了一種基於帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的抽取器，進而根據無線電射頻信號頻譜的特點，提出了高效混合濾波器組adc系統，其數字信號輸出速率比高速混合濾波器組adc系統降低m - 1倍。
  5. Frequency response, quantization noise, reconstruction error and its sensitivity to mismatch among adcs are studied at length in prqmf banks adc system, and the theoretic results include : ( 1 ) the distortion / aliasing functions of hybrid filter banks adc system is similar with that of switch capacitor filter banks adc system ; ( 2 ) for wide or narrow band input signal, the effective resolution of the two adc systems is 0. 51og2m bits higher than their adc ; ( 3 ) reconstruction error ' s sensitivity to mismatch among adcs of the two adc systems is reduced effectively than time interleaved adc system

    2對prqmf濾波器組adc系統的頻響、量化噪聲特性、重建誤差特性以及重建誤差對adc間的失配敏感性進行了理論分析研究，所得到的理論結果為： （ 1 ）混合濾波器組adc系統與開關電容濾波器組adc系統的失真/混迭函數一致； （ 2 ）無論輸入寬帶還是窄帶信號，這兩種adc系統的有效解析度均比其adc提高了0 . 5log _ 2m比特； （ 3 ）這兩種adc系統的重建誤差對其adc間的失配敏感性均明顯低於時間交織adc系統。
  6. The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc. in order to remove it, a kind of downsampler model based on nyquist and bandpass sampling theorem is presented, analyzed and proved in time and frequency domain, in addition a downsampler is designed according to the model. on the basis of hybrid filter banks adc system, a class of high speed hybrid filter banks adc system is proposed

    針對混合濾波器組adc系統因其adc模擬輸入帶寬低而不能對頻率較高的射頻模擬信號進行模/數轉換的瓶頸，作者提出了一種基於nyquist采樣定理和帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的sha抽取器，進而在混合濾波器組adc系統的基礎上，提出了高速混合濾波器組adc系統。
  7. A current compensation method is presented and realized, which improve the pull - out performance at half - step mode in wider high frequency range for two phase hybrid stepping motors, and the usable horsepower of the system is also increased

    給出一種電流補償的方法，使得半步方式運行的二相混合式步進電動機和牽出特性在高頻運行的一定頻段內得以提高，增大了該電動機系統的可用功率。
  8. This paper expatiated that the mathematics models of ac motor is higher order, non - linear and closed coupling, multivariable input - output system. and introduces the principle and the algorithm of sine pulse width modulation ( spwm ), opened - loop space voltage pulse width modulation control ( svpwm ) and field oriented control ( foc ). finally, realized the control strategies of variable - frequency speed regulating using assembly and c language

    文中闡述了交流異步電機的數學模型是高階、非線性、強耦合的多變量輸入輸出系統，介紹了交流電機的正弦脈寬調制、開環電壓空間矢量的u / f控制和磁場定向控制的原理及控制演算法，並利用dsp構成控制系統，通過匯編語言和16位定點c語言混合編程的方法實現了上述的變頻調速控制策略。
  9. Research in hybrid high frequency power distribution system

    混合式高頻交流配電系統研究
  10. Simulation of hybrid high frequency power distribution system

    混合式高頻交流配電系統的模擬研究
  11. Experiment on hybrid high frequency power distribution system

    混合式高頻交流配電系統的實驗研究
  12. The designs of circuit and electro magnetic compatibility ( emc ) are very important for the high - speed disposal system and the design of high frequency printed circuit is more important. it is described in detail in this article ; for the mixed voltage system, the meet of different voltage chip is very important and it is also described in detail

    對于高速處理系統，電路設計和電磁兼容性（ emc ）的設計很重要，尤其是高頻布線要求更高，本文對此做了比較詳細的介紹;在混合電壓系統中，不同電源電壓器件的介面需進行電壓變換，本文對此也做了詳細的介紹。
  13. In addition, hybrid spread - spectrum communication system is propitious to enhance anti - jamming performance of the system that is make up of direct sequence ( ds ) and frequency hopping ( fh ), and it can satisfy the require of anti - jamming of systems. it concentrate their virtue and overcome shortage in single spread spectrum style. this paper discusses the aspect in detail

    另外，將擴頻技術中應用最廣泛的兩項技術直序擴頻（ ds ）和跳頻（ fh ）結合在一起，構成混合擴頻通信系統，有利於提高系統的抗干擾性能，更能滿足系統抗干擾的要求，而且將跳頻系統和直擴系統的優點集中起來，克服了單一擴頻方式的不足。
  14. In the paper, the design of the real - time test system for crystal parameters is presented. the signal generator of sweep frequency based on dds device ad9852, the signal measuring circuit based on gain and phase detector ad8302, and the real - time control and deal circuit based on tms320vc5416 and the design of high - speed printed digital & analog circuit board are discussed in details

    本文闡述了晶振實時測量系統的設計，介紹了以dds晶元ad9852為核心的掃頻信號源電路，以增益相位檢測器ad8302為核心的信號檢測電路，以dsp晶元tms320vc5416為核心的實時控制與運算電路，以及高速數模混合電路板的設計方法。
  15. At present, purchease - sales - inventory manage systems generally have two types of constructive patterns. one is c / s, the other is b / s. in view of their advantages and shortcomings as well as correlative factors, such as its operations characteristic and actuality, being changing intranet environment and customary demanding fashion and developing trend of operations and manage fashions of corporations, the paper puts forward a kind of mixed constructive pattern of c / s and b / s aiming at complex operation, frequent data processing, more data transmitting and high - demand to security, the c / s is used. on the contrary, for those operations of wide scope and low - rise security, the b / s is used. in this way, the mixed patterns has the advantages both c / s and b / s and it satisfied different special demands

    目前進銷存系統一般採用c s或b s兩種結構模式，根據圖書進銷存業務特點和現狀、現在企業普遍改造的intranet環境、企業長期的需求習慣方式及將來業務和經營方式的發展趨勢，針對c s 、 b s結構進銷存系統各自優缺點，本文提出了採用一種c s和b s混合結構模式。把業務復雜、數據處理頻繁、數據傳輸量大、安全性要求高的業務，運用c s結構模式，而對于面向范圍廣、安全性要求不高的業務，運用b s結構模式。這樣集c s和b s結構的優點，滿足了圖書進銷存業務不同的特點需求，同時，使企業的原有的經營處理應用系統能平滑過渡，也為滿足今後新的需求具有很好的擴展性。
  16. The developments of high - speed circuits and mmic pose the problem of analyzing the circuits characterized both in time and frequency domains. a variety of mixed time - frequency methods have been developed during the last quarter century in the research of the vlsi interconnect and package analysis and nonlinear steady - state analysis. this paper examines these methods from a unified point of view. various mixed problems are formulated as circuit equations in the mixed time - frequency domain. fundamental approaches to slove the equations are given, from which all of the published mixed methods can be naturally deduced. this facilitates the comprehension of these methods and is helpful for their applications. some new ideas are proposed based on the cross reference among these different kinds of methods

    隨著高速集成電路及mmic （微波單片集成電路）的發展，提出了對時-頻混合表示電路進行分析的任務.本文用統一的觀點考察了通常屬于高速電路互連與封裝分析、非線性電路穩態響應分析兩個不同方面的混合分析問題，指出這類問題的實質是要求解一個時-頻混合的電路方程，給出了求解這一方程的基本思路，闡明了現有的各種方法是如何從這一基本思路導出的.這可為認識這些方法的本質與聯系，促進它們的應用與發展提供參考.此文還探討了某些方法之間的相互借鑒，提出了若干新的想法
  17. To assure that the hybrid ds - fh spread - spectrum communication mode has better capability of information safety and inference suppression, i bring forward a design scheme of ds - fh spread - spectrum communication system and solving effectively the crucial problem such as how to choose the user address, how to choose the hopping frequency and how to avoid the collision of the frequency which is used by different users at the same time

    為保證系統可靠、有效地工作，本文提出了一種ds - fh混合擴頻系統的設計方案，並且有效地解決了系統的用戶選址、頻率選擇和頻率碰撞等關鍵問題。通過系統設計模擬證實了ds - fh混合擴頻系統具有優于ds系統的抗干擾性能，並在一定程度上提高了系統的抗遠近效應能力。
  18. On the base of reviewing kinds of statistical parameter, we developed a hybrid statistical technique adapted to chinese - english parallel corpora for the high - frequence content words, and adequately used dictionary information for the low - frequence content word. at last, we used the competitive linking algorithm and achieved the better result

    在詳細考察各類統計參數的基礎上，對高頻實詞提出了適合於漢英兩個不同體系語言的一種混合的統計方法，而對低頻實詞則充分利用詞典獲取對應信息，最後採用一種綜合的基於競爭鏈接的對應演算法，取得了較好的效果。
  19. This paper also presents a conference management pattern without mcu, making control and data separate. in order to enhance the bandwidth utilization factor, a multi - channel based transfer method, unicast plus multicast, is brought forward. in the end of this dissertation, we presents implementation methods, which guarantee the continuity and synchronization of video and audio when playbacking

    提出了一種無mcu的會議管理模式，實現了控制與數據的分離，所有的音頻混合及視頻切換功能均由客戶端計算機完成；提出了一種基於多通道的「單播+組播」傳輸方式，提高了系統的帶寬利用率；並給出保證視頻、音頻回放的連續性、同步性的實現方法。
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