等比通道 的英文怎麼說

中文拼音 [děngbǐtōngdào]
等比通道 英文
equal ratio channel
  • 等 : Ⅰ量詞1 （等級） class; grade; rank 2 （種; 類） kind; sort; type Ⅱ形容詞（程度或數量上相同） equa...
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 通 : 通量詞（用於動作）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 等比 : ratio of equality; equal ratio等比級數 geometric progression; geometric series; 等比生長 [生物學]...
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. In this dissertation we make a study of subliminal channels that conclude the progress, the application, the model, the construction, the stego - key, the capacity, the security, the way to realize subliminal - freeness, and so on

    本文對閾下通道技術進行了比較全面的總結和研究，包括閾下通道的發展狀況，應用前景，閾下通道的模型，構造方法，隱匿密鑰，容量，安全性以及封閉方法等。
  2. The development of single chips and analyzers at home and that of overseas compared, a kind of pocketable dual - channel and multi - function signal analyzer, based on dsp, are researched with the functions of dynamic analyzer, data logging acquisitor, start - up / coast - down analyzer and dynamic balancer, etc. and the functions data acquisition, storage, display and analysis of vibration signal are validated in practice, high - speed float point data calculation ability, large memory space and simple operation are the characteristics

    高性能單片機尤其是dsp功能晶元的採用及用戶技術要求的不斷提高，使得信號分析儀的功能越來越完善，在比較了國內外單片機和信號分析儀的發展現狀后，開發研製了一種基於浮點dsp晶元tms320c32的便攜式雙通道多功能信號分析儀，兼有動態信號分析儀、巡檢數采器、起停車分析儀、動平衡儀等多種儀器的功能。
  3. To increase the bearing accuracy of amplitude - comparison, the multi - channel system was chosen, the angle of reaching of moving antenna pattern serial was estimated from the frequency domain using the phase - delay estimating method, and at the same time, the selection of antenna, quantization of signal and touch switches were optimized in concrete engineering practice, and so the requirement of the index was satisfied

    為提高比幅測向的精度，選用多通道體制，採取相位延時估計法從頻域來估算移動天線方向圖系列的達到角，同時在具體的工程實現上對天線選取、信號的量化、去摸開關等進行優化，從而滿足指標要求。
  4. Reynolds numbers ( based on average velocity at passage inlet and hydraulic diameter of the passage ) are changing from 20000 to 80000 and the extraction ratios ( suction ratios, sr ) are changing from 0. 30 to 0. 60 for each test model. so the influences of reynolds numbers, suction ratios and etc. on the discharge coefficients and pressure loss characterist ics are also presented. flow fields of typical passages are visualized with the flow visualization techniques and measured with hot - wire anemometer

    對每一種通道結構，實驗在不同通道進口雷諾數（ re = 20000 、 40000 、 60000 、 80000 ）和不同通道總出流比（ sr = 0 . 30 、 0 . 45 、 0 . 60 ）下進行，以研究這兩個流動參數及其它相應變化的參數（氣膜孔的雷諾數re _ h 、氣膜孔與通道的動量比i等）對出流特性和流阻特性的影響規律。
  5. It contributes to the deeper comprehesion of these probability distributions, affords more detailed theoretical basis for further studying and simulating satellite mobile channels, ? theoretical analyses and discussions of the models which are often used in the study of the propagating characteristics of satallite mobile channels are given ; meantime, some discussions on the work of model simulations are also given, ? incorrect derivation of the equality between c. loo model and corazza model in some other papers is pointed out. via the conception of received power, we derivate that in the rural environments these two models really have the equal relationship by the way of theoretical derivation and simulatant fittings. therefore, it is able to use corazza model in studying the characteristics of satellite mobile channels in the rural environments and able to avoid the iterant work of modeling, in order to enhance the efficiency and accuracy of research work, ? detailed processes of simulating lutz model by using matlab6. 0 _ simulink4. 0 and the results of comparisions are given

    本文包含有以下的主要內容： ?對衛星移動通信通道傳播特性研究中常用的三個概率分佈給出了詳細的推導過程；以便對這幾個在衛星移動通信通道傳播特性的研究中常用的概率分佈函數有更深的理解，對進一步研究衛星移動通信通道傳播特性和對通道的建模提供了更為詳盡的理論基礎； ?對衛星移動通信通道傳播特性的研究中常用的通道模型進行了理論上的分析和討論，並對衛星移動通信通道建模的研究工作提出了一定的看法； ?指出了以前的文獻中關于c . loo模型和corazza模型的等同性的證明錯誤；並從接收信號功率的角度出發，通過理論推導及模擬曲線擬合重新證明了在鄉村環境下，這兩個模型的確是具有等同性的；從而在對鄉村環境下的衛星移動通信通道傳播特性進行研究時，可以只採用corazza模型來對實際的通道進行建模，這樣可以避免重復的建模工作並提高研究工作的效率和準確性； ?給出了lutz模型在matlab6 . 0 _ simulink4 . 0環境下的軟體模擬實現的詳細過程和整體模擬測試的對比結果，保證了該模型在硬體實現時的可靠性和可行性，從而可以將它們應用於指導模型的硬體模擬實現並可以降低硬體實現時的風險。
  6. Datong city, site of our company, is the second largest city of shanxi province. it is both the joint point of tongpu and jingbao railway and the golden corridor of transporting raw coal of shanxi province to others through daqin railway. we also have convenient airways including datong - taiyuan, daton - beijing

    公司所在地大同市為山西第二大城市，是同蒲京包鐵路交匯處，有晉煤外運的黃金通道大-秦線民航亦比較方便，已開通了大同-太原大同-北京大同-廣州等航線。
  7. First, this paper looks for the national experiences that organizing city traffic in the rodeway system, in conditions of the mobile and no - mobile number being big. then analyzing the questions and reasons in middle - scale - city roadway system, on the base of studying characters of use - land and residents journey, transportation tools and relations of the transportation and economy development, put forward some proposes in roadway system on the base of middle - scale - city characters of basic construction and solving the new problems of city traffic. through analyzing the relations of middle - scale - city roadway system, city land - use and land - shape, put forward some development antidote. in the circumstance of road facilities being lack, improve the level of traffic management of city roadway system, improve traffic environment of city roadway system. put forward some revised proposes on road - net norm of middle - scale - city road system in our country ; consider the plan of isolating mobile form no - mobile in the organization of roadway system ; construct revaluating system of city roadway system. at last through studying a typical case of yuncheng, put forward some solutions and measures ; through using evaluating system, evaluate, contrasts and analyses the present conditions in city roadway system and planning program

    本文首先尋求國外機動車和非機動車擁有量都較大的情況下，為組織好城市交通在道路系統方面所取得的可供我國借鑒的經驗，然後在對我國中等城市用地特徵、居民出行特徵、交通工具、交通與經濟發展的關系等進行分析的基礎上，剖析中等城市道路系統現狀存在的問題及其形成原因，以及對今後城市交通將要出現的新問題，提出以中等城市的交通結構特點為基礎的機、非分流道路系統的建議；通過分析中等城市道路系統與城市土地開發、城市用地形狀等之間的關系，並相應其提出發展的一般對策，在道路設施不足的情況下，加強城市道路交通系統的管理，提高城市道路交通環境，對我國中等城市道路系統在道路網指標上提出修正意見，對道路系統組織機、非分流進行思考；並建立了城市道路系統評價指標體系；最後以運城市做為實例分析，具體提出近期處理的對策與措施，並運用評價體系對城市道路系統現狀和規劃方案進行評價對比分析。
  8. Space - time codes can be divided into tree mainly parts : bell layered space - time architecture ( blast ), space - time trellis codes ( sttc ) and space - time block codes ( stbc ). in this paper, we mainly compare the performance of blast and stbc in many aspects, such as design criterion, transmission rate, diversity gain, diversity combining, bit error rate and channel capacity etc. in this paper, we first respectively analysed the instantaneous received symbol energy - to - noise ratio of v _ blast in the diversity combining methods of maximal ratio combining ( mrc ), equal gain combing ( egc ) and selective combing ( sc )

    Mimo技術核心是空時編碼（ stc ） 。空時編碼主要分為三種:分層空時碼（ blast ） 、空時格碼（ sttc ）和空時塊碼（ stbc ） 。本文主要對分層空時碼和空時塊碼這兩種編碼方式在設計準則、傳輸速率、分集增益、接收合併、比特差錯率和通道容量等方面進行了較為詳盡的研究。
  9. To suppress the clutter, noise and detect target, we adopt several advanced sp methods such as pulse compression, mti, mtd, cfar, amplitude - comparison angle measurement and ambiguity resolution, of which we emphase the algorithms of cfar and ambiguity resolution. two cfar algorithms, cell - averaging cfar ( ca - cfar ) and ordered

    為了抑制雜波、噪聲和檢測目標，採用了脈沖壓縮、動目標顯示、動目標檢測、恆虛警、單脈沖比幅測角和解模糊等較先進的雷達信號處理技術，並採用了多模式分通道處理方式。
  10. Abstract : by comparing the channel capacities hetwem orthogonal space - time block coding and multi - antenna array system over rayleigh fading channel, some capacity loss for orthogonal space - time block coding is obtained, which is a function of the code rate, the rank of channel matrix and the number of transmitter and receive antennas, although the system of orthogonal space - time block codes is simple and easy to implemented. if is also shown that there is no capacity loss only if both the code rate and the channel matrix rank are all one

    文摘:在研究瑞利衰落條件下正交空時分組編碼通道容量的基礎上，將其與多發送多接收天線系統的通道容量進行了比較.比較結果表明，正交空時分組碼雖編碼簡單，易於實現，但在通道容量方面存在較大的損失，損失的程度與編碼碼率、通道矩陣的秩及收發天線數等因素有關.進一步研究表明只有當編碼碼率和通道矩陣的秩都為1時，才沒有通道容量的損失
  11. According to the technical requirements of data relay satellite system, we determine to exploit and analyze the oscillation amplitude comparison mono - pulse mode in a single channel mono - pulse, angular tracking manner in comparisons among several angular tracking modes e. g. cone scanning, step tracking, phase comparison mono - pulse and oscillation amplitude comparison mono - pulse

    根據數據中繼衛星系統技術指標與技術要求，通過比較圓錐掃描、步進跟蹤、相位比較單脈沖與振幅比較單脈沖等跟蹤方式的優、缺點，確定採用振幅比較單脈沖方式中的單通道單脈沖角跟蹤方式，並對此跟蹤方式進行了詳細的研究。
  12. By theory and practice simulation, the several types of constant envelope modulation techniques are analyzed and compared, including theirs modulation principle, phase path, the modulated wave envelope, power spectrums, error bit rate and the influence of its power spectrums of the band - limited and non - linear, etc. especially we have researched the ijf - oqpsk modulation technique, and the performance of its inter - symbol interference and time jitter free, and its strongly resisting of spectral spreading

    結合理論和實驗模擬結果，分析討論了衛星通信中的各種恆包絡調制技術，對它們的調制原理，相位路徑，已調波包絡，功率譜密度，誤碼性能，以及帶限非線性通道對其功率譜的影響等方面都作了研究和比較。特別研究了ijf ? oqpsk在消除碼間干擾和定時抖動方面的性能及其優良的旁瓣特性和抑制頻譜擴展特性。
  13. The scholars insisting on transgression provided many markers such as mineralogy, lithology, paleoecology and geochemistry, but these makers are not completely the same as normal marine makers, moreover, the passageway and obviously increased makers of transgression have not been discovered, so " marine flooding ", " tsunami " and " terrestrial facies " appear, these viewpoints have coexisted for a long time

    盡管「海侵」論者提供了礦物學、巖石學、古生態學以及地球化學等多種標志，但是因為這些標志與標準海相標志比較，都有一定差別，而且至今沒有發現確實可靠的海侵通道和明顯的海相性遞增現象，所以又出現了「海泛」論、 「海嘯」論和「陸相」論。
  14. We put the emphases on the soft output viterbi algorithm ( sova ), which is one of turbo code ’ s decoding algorithms, and presents the derivation and computation step of the sova decoding algorithm. after presenting sova and map decoding algorithms and analyzing four kinds of decoding algorithms, the paper makes a comparison among the different decoding algorithms by emulation analysis, and analyzes the time complexity of various algorithms, and then contrasts them. in the last part of this paper, according to the criterion recommended by the consultative committee for space data systems ( ccsds ), including code rate,

    根據空間數據系統顧問委員會（ ccsds ）為turbo碼應用於深空通信系統推薦的標準，包括碼率、碼塊大小、分量碼類型、約束長度、碼生成多項式，以及交織器的選擇等參數的建議以及sova譯碼演算法的理論基礎，設計了sova演算法的實現結構，通過模擬驗證了本文所採用的turbo碼的性能，從而證明turbo碼確實是一種很好的通道糾錯編碼方式，它適用於要求功耗低或信噪比低的深空通信系統中。
  15. In this dissertation, researching from the basic concept of large signal network analysis, we discuss the measurement theory and technology of rf network nonlinearity and the characterization technology of intermodulation distortion in detail, and analyse some nonlinear characteristic excited with a one tone or multi - tone, such as am - am, harmonic distortion, intermodulation distortion, adjacent channel power ratio and how to qualitatively analyse nonlinearity of rf network to make the measurement and calibration

    本課題從大信號網路分析的基本概念出發，詳細討論了射頻網路非線性的測量理論和技術以及互調失真表徵技術，分析了在單頻音和多頻音信號激勵下的一些非線性特性，如am - am ， am - pm ，諧波失真，互調失真（ imd ）和臨近通道功率比（ acpr ）等，以及根據包絡域方法定性地分析射頻微波網路的非線性特性，以此來進行射頻網路的非線性測量和校準。
  16. This paper mainly discusses the design principles and chief techniques of a digital accessing system for power - line communication net ( plcn ). the technology of low bit rate speech compression high - speed modem based on plcn adaptive equalization to the channel anti - jamming and anti - fading are applied in this system. so speech tele - control data and tele - protection signals can be transmitted high quality in the band - limited channel

    該系統綜合應用了低比特率語音信號壓縮編碼技術、基於電力通信網的高速調制解調技術、信號傳輸的通道自適應均衡技術和抗干擾、抗衰減技術，可在帶限通道中高質量的傳輸語音、遠動數據和遠方保護等信號，具有較高的整體性能。
  17. Novel methods for measurement of intraocular pressure / volume and aqueous fluid production / outflow were applied in comparative studies of wildtype mice vs. mice lacking aqp1 and aqp4 ( individually and together ). methods : aqueous fluid production was measured by in vivo confbcal microscopy after transcomeal iontophoretic introduction of fluorescein into the aqueous fluid

    創造性地設計和建立了小鼠眼房水動力學測量的系統方法，對野生型小鼠和水通道蛋白敲除小鼠的眼內壓、房水容積、房水生成和排出等生理特徵，分別進行了系統檢測和對比分析。
  18. The experimental model is a rectangular section of 15. 2 187mm ~ 2, which is composed of two aluminum plates. the angles between the internal netted rib turbulators and the flow direction are 45 ? for the one plate and 60 ? for the other, or both 45 ? for two plates. in the experiment, the re numbers changes from 0. 4 10 ~ 4 1. 5 10 ~ 5, rib width - to - pitch are 0. 25, 0. 3 and 0. 5, rib width - to - height are 0. 25, 0. 3 and 0. 5, the rib height - to - hydraulic diameter ratio is 0. 246

    主要研究了在通道進口截面積（即無肋處的截面積） a為15 . 2 187mm ~ 2 、肋高與通道當量直徑之比e / de等於0 . 246 ，實驗雷諾數范圍在0 . 4 10 ~ 4 1 . 5 10 ~ 5之間的情況下，雷諾數re 、肋向角a 、肋寬與肋高之比t / e和肋寬與肋間距之比t / p等參數對通道強化傳熱與流動阻力特性的影響。
  19. This thesis also analyzes the actuality of penalty system in our country and puts forward some suggestions in reforming and improving it

    傳統的刑罰觀中的教育改造論等比較人道的觀點是通過刑罰手段的改造，而使犯罪人重返社會。
  20. With the favor of these techniques, the static pressure distribution along the length and the velocity profile at the mini - channel exit were obtained. with the data of more than 500 flow states based on 13 kinds of mini straight rectangular channels that their heights were 0. 5mm and 1. 0mm, the effects of characteristic scale, surface roughness and the aspect ratio of rectangular on the characteristics of flow resistance of mini straight channels were studied

    採用在沿程測量氣流靜壓分佈、在出口測量速度分佈的方法，對高度0 . 5mm和1 . 0mm的13個微小直矩形通道的500多個狀態流場進行了測量，研究了特徵尺度、表面粗糙度、橫截面寬高比等因素對微小等直通道流動阻力特性的影響。
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