矢量幅度 的英文怎麼說

中文拼音 [shǐliángfúdù]
矢量幅度 英文
amplitude of the vector
  • 矢 : Ⅰ名詞1. （箭） arrow 2. （尿） excrement; dung; feces 3. （姓氏） a surname Ⅱ動詞（發誓） vow; swear
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 幅 : Ⅰ名詞1. （布帛、呢絨等的寬度） width of cloth 2. （泛指寬度） width; size 3. （姓氏） a surname Ⅱ量詞（用於布帛、呢絨、圖畫等）
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 幅度 : range; scope; extent; [古詞] latitude; breadth; [數學] argument; [電學] amplitude
  1. As the vectors go around, the amplitude of the sum vector gets bigger, and smaller, and the intensity pulsates.

    在矢量旋轉時，合矢量的振幅時而變大，時而變小，因而強度作脈動變化。
  2. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  3. Diagrams of velocity vectors and streamlines display waveform and amplitude properties, showing the effect of fibres on enhancing the flow stability. the computational results are tested

    Piv測量得到流場速度矢量圖及流線圖，擾動波幅與波形特徵說明， re數一定時流動穩定性隨h值增大而提高。
  4. 2. the principle that cylinder misfire is diagnosed using torsional vibration harmonic analysis is illustrated by calculation of vectorsummation. calculation and experiment show : low harmonic will increase highly and main harmonic will decrease little when one cylinder is misfiring

    通過對扭振激勵的相對振幅矢量和的模擬和實驗研究，得到結論如下：如果柴油機發生單缸熄火故障，扭振低諧次幅值會大幅度增加，主簡諧會略有下降。
  5. An algorithm for detecting moving ir point target in complex background is proposed, which is based on the reverse phase feature of neighborhood ( rpfn ) of target in difference between neighbor frame images that two positions of the target in the difference image are near and the gray values of them are close to in absolute value but with inverse sign. firstly, pairs of points with rpfn are detected in the difference image between neighbor frame images, with which a virtual vector graph is made, and then the moving point target can be detected by the vectors ' sequence cumulated in vector graphs. in addition, a theorem for the convergence of detection of target contrail by this algorithm is given and proved so as to afford a solid guarantee for practical applications of the algorithm proposed in this paper. finally, some simulation results with 1000 frames from 10 typical images in complex background show that moving point targets with snr not lower than 1. 5 can be detected effectively

    基於運動點目標在鄰幀差分圖像中所具有的近鄰反相特徵，即運動點目標的兩個位置相鄰近、灰度值一正一負，提出一種在復雜背景下，基於紅外序列圖像的運動點目標檢測演算法.本演算法利用該特徵在鄰幀差分圖像中檢測反相點對，進而構造反相點對矢量圖，最後依據累積反相點對矢量圖中多矢量首位相接的連續性檢測出運動的點目標.文中給出並證明應用本演算法能以概率1檢測到運動點目標的收斂性定理.對典型復雜背景下10幅1000幀圖像的模擬結果表明，當信噪比大於或等於1 . 5時，可以有效檢測出運動點目標
  6. Introduce the traditional two samples rotation vector algorithm and three samples rotation vector algorithm, which fit the incremental angular condition. but, the output of fiber optic gyro is angular rate of the vehicle, the error would increase serious if use traditional algorithm

    由於光纖陀螺儀輸出為角速率信號，而傳統的旋轉矢量演算法輸出為角增量信號，採用角增量提取演算法，旋轉矢量精度會大幅大降。
  7. By simulating mathematically on frequency and on space, we can find the average speed of space field and the average speed of frequency field that is weighted by amplitude, and analyse their relation, and analyse the meaning of space speed variance x and frequency speed variance v. in the fourth part, how to ensure the height of cloud is introduced, and basing on the theory of wind field continuity, the height updating quality controlling is introduced. in the fifth part, the system of cloud wind is introduced, we tracked cloud - motion of consecutive satellite images with one - minute interval by the 1 - d fourier analysis technique and the two - dim fourier analysis technique and the fft analysis technique, and dispose them with quality controlling. in the sixth part, we summarized our research and put up with shortages of this article

    模擬模塊內各點的速度線性變化時，得到空間域平均速度以及頻率域以振幅為權重的平均速度，分析了空間域平均速度和頻率域以振幅為權重的平均速度的關系，並揭示空間域的平均速度的標準差_ x和頻率域的振幅為權重的平均速度的標準差_ v的意義，以及它們之間的關系；第四章介紹了雲跡風系統的高度指定以及風矢高度的劃分，並根據風場連續性原理，介紹了高度調整法的質量控制；第五章介紹導風系統的流程，選擇了三個時刻的ir雲圖，分別用一維傅立葉相位法、二維傅立葉相位法和快速傅立葉演算法計算一個風場個例，並對所得風場進行質量控制，並給出風場圖；第六章進行研究總結，指出不足和有待于進一步研究之處。
  8. According to the relationship of the angle of the maximum torque and the q axis, the reluctance torque for salient pmsm is made full use of and the sator current amplitude is reduced by a large percentage, so that the system robustness is greatly increased. at the speed loop, this paper presents a single value model algorithmic control strategy which is the simplied form of normal model algorithmic control and has less computation work than the latter, so the real - time performance is very good

    對于嵌入式pmsm ，根據在電流幅值一定的條件下最大輸出轉矩與（為等效電流矢量和q軸之間的相位角）之間的關系，將磁阻轉矩轉換為輸出轉矩從而提高了輸出轉矩，改善了系統的控制性能；在速度環採用單步模型演算法控制，其計算量比較少，提高了系統的實時性和魯棒性。
  9. Model dcw light - spot vectormeter, designed to from a complete set with a dynamic balabcing tester, is served as a display meter for phases and ampiltudes of dynamic unbalancing quantites. the meter is composed of two sets of measuring mechanisms in moving coil system, and is also put to use lightspot indication as well as polar scale

    Dcw型光點矢量表是供動平衡試驗機配套作為動態不平衡量的相位和幅值的顯示儀表，它是由2組磁電系測量機構組成並採用光點指示及極坐標標度。
  10. The virtual orchestra system, which is based on midi synthesis and vbap ( vector base amplitude panning ), implements interactive multi - channel virtual spatial sound reproduction

    基於midi合成技術和矢量基幅度平移技術實現了一個互動式多通道虛擬空間音樂回放系統。
  11. In order to encode the parameters of sinusoidal model, the vector quantization techniques for amplitude parameters and the differential quantization for frequency parameters are proposed and discussed. at the same time, the frequency bin model, the random phase model and the zero phase model are also discussed

    針對正弦模型參數的量化編碼，提出了幅度參數矢量量化、頻率參數差分量化等方法，並探討了頻率盒量化模型以及隨機相位和零相位模型等。
  12. Vector modulators have been used in this paper to vary the phase and amplitude of signals in the in - band spurious cancellation loop of feed - forward power amplifiers ( ffpa ). in the two - tone test, 3. 5ghz ffpa developed in this paper shows more than 35db improvement in the third - order inter - modulation ( im3 ), offers approximately - 60dbc im3 output, achieves the expected goal, and meets the communication requirement

    本文研製的3 . 5ghz前饋放大器採用了矢量調制器來實現前饋環路的幅度和相位調節，在雙音測試結果中，三階交調im3的改善超過了35db ，前饋系統輸出im3抑制近- 60dbc ，達到了預期指標，滿足了通信需要。
  13. The primary task of this thesis is how to design a set of data gathering system, which can track record original wave forms of sound signals, the moment that sound impulse range pass gate limits, the data on the orientations of vector water - sensor in the buoy and the data obtained by gps

    本論文以整個系統的硬體設計為主要研究對象，主要任務是設計一套數據採集系統，完成對聲信號的原始波形及聲脈沖幅度過門限時刻、浮標上矢量水聽器的方位數據及gps數據的記錄。
  14. A cornstarch - water slurry was driven by a pulsatile pump through tubing to simulate the blood flow within the heart, and the tubing was cyclically moved by a piston to simulate the heart motion

    結果在模擬心臟運動作用下，原來的模擬血流波形已不存在，代之以模擬心臟運動和模擬血流按速度矢量相加規律所組成的復合波，而模擬心臟運動所產生的多普勒頻移信號的振幅和頻率都未改變且與上述血流信號並存於頻譜中。
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