掃頻法 的英文怎麼說

中文拼音 [sǎobīnfǎ]
掃頻法 英文
frequency swemethod
  • 掃 : 掃構詞成分。
  • 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...
  • 法 : Ⅰ名詞1 （由國家制定或認可的行為規則的總稱） law 2 （方法; 方式） way; method; mode; means 3 （標...
  1. It uses the condition to design the system. it also describes theories of dealing with the system error

    本章還討論了掃頻式微波干涉儀診斷系統的誤差處理方法及原理。
  2. Sine sweeping constant current exciting for geophone characteristic parameter measurement and identification

    地震檢波器特性參數識別的一種新的正弦掃頻恆流激勵方法
  3. First, the ray tracing equation and its numeric solution is presented in this paper, then on the base of quasi - parabolic ionosphere model, using the technology of the numeric ray tracing, a ray tracing simulateing platform is established. this platform can simulate the ray tracing for a fixed frequency or sweeping frequencies, also can calculate the group path and the covered region of rays

    首先，本文給出了射線追蹤方程及其數值解法，在球形對稱準拋物模型背景電離層基礎上，利用數字射線追蹤方法，建立了射線軌跡演示平臺。該平臺可實現定頻或掃頻射線軌跡演示，計算各射線群路徑，覆蓋區域等功能。
  4. Characteristic parameter measurement and identification of geophone by electric sine sweeping exciting

    正弦掃頻電激勵法測量與識別地震檢波器特性參數
  5. It is necessary in digital communication system that carrier recovery can compensate frequency offset and phase jitter brought by transmission and modulation. this paper is mainly focused on carrier recovery technique. we introduce the channel model at cable headed and receiving site. firstly, we introduce the principle of carrier recovery and give some algorithms of them, which are directed - decision, reduced constellation and frequency sweeping

    本論文緊緊圍繞著數字通信系統中的載波恢復技術，在介紹了有線通信系統所用的調制解調通道模型后，首先闡述了載波恢復技術的思想和基本原理，在此基礎上給出了三種載波恢復演算法，即判決導向演算法、簡化星座判決演算法和掃頻演算法，並且給出了其各自的模擬圖：然後深入研究了一種適合高階qam並且能糾正較大頻偏的載波恢復技術：極性判決演算法。
  6. Frequency sweep flight technique is used to collect the flight data of a model helicopter near its hover and low speed working condition, window frequency spectrum is combined to obtain the frequency response of both lateral and longitudinal channels, then weighted fitting method is utilized to obtain the transfer functions of the two channel

    摘要利用掃頻試飛技術獲取了某無人直升機在懸停工作點附近的舵機輸入和直升機動態輸出數據，利用組合窗頻譜分析的方法獲取了直升機橫滾通道與俯仰通道動態的頻率響應特性，利用加權擬合的方法獲取了各自的傳遞函數。
  7. 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。
  8. First, we calculate out the zero point in a simple numeral method, then we get the phase according to the fact that the symbol of phase changed is opposite in the positive - slope and the negative - slope of triangle wave. this method has the following characteristics : easy to calculate, simple to realize and high precision

    首先用簡單的數值方法較準確的計算出零點時刻;進而根據三角波掃頻時正程和逆程相位變化符號相反的特性，巧妙的完成了相位計算，該方法具有計算簡單、實現方便、準確度高等特點。
  9. In chapter 3, the non - linear equation was linearized with the jacobi matrix, and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ). meanwhile, the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ). the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies

    然後，在穩態響應的基礎上利用雅各比矩陣對非線性方程進行了線化，線化后的方程利用多槳葉坐標變換轉換到固定系下后，利用直接特徵值分析（地面、懸停）或floquet理論（前飛）對系統進行了穩定性分析;同時，對系統進行了瞬態響應分析;在系統達到穩態的基礎上進行掃頻激勵，用fft變換求得系統頻率，進而用移動矩形窗方法分析得到系統的阻尼。
  10. The spare value measured by super - car. 5 cable s employing : spare value of super - cat 5

    超五類線用掃頻方法測得的空余量
  11. Measuring methods for sweep signal generators

    掃頻信號發生器測試方法
  12. Performance comparison between noise signal and chirp signal in correlation measurement

    相關法測量中的噪聲信號源和掃頻信號源的性能比較
  13. Frequency sweeping interference suppressing in dsss system using chirp - fourier transform

    變換的掃頻干擾抑制演算法
  14. In the leakage characteristic test, the problem of small leakage flow automatic test is solved with the method of usage of an ellipse gear flow meter and a self - made interface circuit. in the dynamic state characteristic test, frequency sweeping and statistic methods are used and their results are compared with 1250 frequency response analyzer

    在電液伺服閥動態測試實驗中，採用了掃頻法和統計法這兩種不同的方法進行測試，並對實驗結果與1250頻響分析儀所測的結果作了對比，發現二者基本一致。
  15. New interference methods, such as sweeping frequency interference and faster - hop - collision interference, become a new focus of electronic countermeasures to fh communication systems

    摘要掃頻式干擾、更高跳速碰撞干擾等新的干擾方法成為跳頻通信系統電子對抗領域中又一重要研究方向。
  16. When estimating frequency with the fft, the resolution and accuracy are limited by the observation time of the signal, i. e., a / = it. the level measurement accuracy of the fmcw radar is determined by the bandwidth of the transmitted signal

    掃頻帶寬1 . 5ghz ， fft兩條譜線的間隔對應的距離為10cm ，而液位測量系統的精度要求達到1mm ，因此直接利用fft頻譜估計距離顯然無法達到精度要求。
  17. Main contents included are : 1. analyzed, simulated and validated the effect of power fluctuation and the nonlinearity in frequency sweep on radar practical ranging precision, and the validating method of nonlinearity in frequency sweep

    主要內容為: 1 .分析、模擬並驗證了掃頻非線性對雷達實際測距精度的影響、掃頻非線性的校正方法。
  18. The parameters of the actuator model are estimated via the tests under sweep sinusoidal excitation. the effectiveness of the model is validated through wind tunnel tests. chapter 3 presents the design of the test rig and the measurement / control system software

    通過掃頻實驗和非線性最小二乘法進行參數識別，得到傳遞函數模型中各參數的值，並通過和風洞實驗驗證了模型的有效性。
  19. And then swept - sine method is introduced. at last the comparison results are discussed. finally, the extended “ nose - to - nose ” calibration technology is introduced emphatically

    其次，介紹了掃頻源法;最後，介紹了兩種方法的比對結果。
  20. The techniques introduced include the imaging of surface - opening cracks, the three dimensional scan of surface - opening cracks, and the imaging of internal defects using time domain or frequency domain signals

    本文介紹數種利用彈性波建構混凝土缺陷影像的技術，包括表面裂縫影像法、表面裂縫三維掃描法，以及時間域和頻率域的內部缺陷影像法。
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