頻率同步 的英文怎麼說

中文拼音 [bīnlǜtóngbù]
頻率同步 英文
frequency synchronism
  • 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...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 步 : Ⅰ名詞1 （步度; 腳步） pace; step 2 （階段） stage; step 3 （地步; 境地） condition; situation; st...
  • 頻率 : frequency; rate
  1. On the demand of application and according to the soluhons menhoned above, a method of displacement waiting auto - sy ' nchronizing is put forward, which is based on match filters. at the end a complete and speeflc set of hardware circuits and software programs which haplements the scheme, is also presented in the ancle. the synchronization system was tested in the pool and in the shallow wate near m port, the result of the test shows that its performance is satisfactory

    論文著重介紹實現了跳頻通信系統同步的一般方法，並詳細分析和對比跳頻同步系統的捕獲方案，在此基礎上，提出了一個基於匹配濾波器的位移等待式自同步方案，設計、完成並給出了詳細硬體連線電路圖、軟體程序流程圖和部分程序清單，該自同步方法在實驗室水池實驗取得良好的效果，並在廈門港海域進行了現場實驗測試，具有較低的誤碼率和一定的檢測概率，結果令人滿意。
  2. If the numerical value line resonance frequency plus some shaft connatural frequency of generator is equal to operation frequency, it brings about coupling resonance between generator and system, which maybe results in shaft rupture of synchronous generators

    當線路電氣諧振頻率與同步電機的軸系某一固有振蕩頻率近似互補于電網工頻時，將導致機電系統的耦合振蕩，嚴重的會造成同步發電機大軸的扭斷。
  3. In this thesis, firstly, we put forward a new algorithm of the synchronization of carrier reference phase, that is to use the curve synthesizing with the general digital carrier phase looper to have an estimation on carrier frequency within 10 ms so as to meet the need of meteor burst communication. we have done some simulations to get the performance of carrier frequency estimation using two modulation modes ( 16qam and 4 - qpsk ), and had some test on the carrier phase looper in conditions when using different baud rate transmission and when the baud tuning have windage

    我們對兩種正交調制方式（ 16qam和4 - qpsk ）進行了模擬工作並給出了模擬結果，同時討論了碼元同步定時誤差對鎖相環路工作的影響並根據流星通信中使用變速率傳輸時鎖相環路的載波同步性能進行了測試；然後在基於軟體無線電思想的數字處理平臺（該數字處理平臺實現了中頻數字化）上用dsp軟體完成了載波的相位跟蹤。
  4. The method can be used in the measurement of periodic and nonperiodic signal. according to the high accuracy and fixed gate - time measurement method, based on the multiple period synchronization method, the high speed, high accuracy and continuous frequency measurement is accomplished

    將其再與一種從多周期同步法發展而來的高精度、定閘門法相結合，從而實現了高速、高精度、連續頻率測量，這非常適合非頻率量的頻率傳感信號的測量。
  5. The injection - locking technology, characterized by the frequency stabilization, amplification, modulation and etc, has been widely used in the small - signal recovery, frequency synchronization, power synthesis, phase modulation and etc in the microwave, millimeter wave and higher frequency range communication and phased - array systems

    注入鎖定技術具有穩頻、放大、調制等特性，已被廣泛應用於微波毫米波以及更高頻段通信和相控陣系統中的小信號恢復、頻率同步、功率合成、相位調制等。
  6. And the pn code synchronization scheme adequate for the wcdma uplink is presented and combined with finger management, channel estimation and mrc algorithms to complete the rake receiver scheme. simulations on pd / pf and pd / ebno show the scheme has good preformance and meets the requirement of wcdma uplink in 3gpp protocols

    分別採用pd / pf方法和bler / ebno方法對同步方案進行模擬，模擬結果表明，本論文提出的擴頻碼同步方案的捕獲概率和虛警概率能滿足要求，同時總體接收機方案能達到3gpp協議中上行鏈路的性能要求。
  7. An improved joint timing and frequency synchronization method for ofdm

    聯合時間頻率同步演算法
  8. Note type rated output, synchronous speed, voltage and frequency, insulation class, mounting type etc

    訂貨時必須說明產品型號，額定功率，同步轉速、電壓及頻率、絕緣等級，安裝結構型等。
  9. At last, fpga designs of symbol and frequency synchronization are completed

    最後在演算法和模擬的基礎上對符號和頻率同步完成了邏輯模塊設計。
  10. Chapter three provides synchronization algorithms in dvb - t cofdm receiver, including symbol timing recovery, carrier frequency error estimation and sampling timing recovery. chapter four introduces some channel estimation algorithms based on interpolation in dvb - t receiver. five estimators are compared, in terms of mean - squared error both in rayleigh channel and ricean channel

    第三章首先討論了由於載波頻率偏差、符號定時偏差和采樣定時偏差對ofdm系統所造成的影響和干擾，然後針對dvb - t系統的cofdm接收機方案，分別給出了符號定時同步、頻率同步以及采樣鐘同步的實現演算法，並對它們的性能進行了分析模擬。
  11. Furthermore, this paper exploringly studies an 802. 1 la high - speed wlan with the 54mbps data rate, and presents a sort of time synchronization and frequency offset estimation method based on the frequency domain auto - correlation of the unique preamble training sequence of 802. 11 plcp frame ; the method have the high time precision, the wide frequency estimat ion range and short convergence process ; and moreover, it can applied to other frame communication system

    另外本文還對最高傳輸速率為54mbps的802 . 11a高速無線局域網系統進行了探索性研究，討論了ofdm調制技術在無線局域網中的應用；結合802 . 11a物理層數據幀結構特點，提出了一種基於前導訓練符號序列的頻域自相關時間和頻率同步方法，此方法具有定時精度高、頻偏估計范圍寬和同步建立迅速等特點，也適合於其它幀通信應用場合。
  12. Then time domain synchronization including symbol, frequency and carrier synchronization algorithms is discussed according to the characteristics of frame structure in merged scheme. at the same time, pointed out its merit that high rate of spectrum utilized and rapid synchronization retrieved. and simulation and much improvement are done to realize the algorithms in project

    然後根據融合方案的幀結構的特點，分析和探討了時域同步演算法，包括符號同步、載波頻率同步和采樣同步演算法原理，指出時域同步有頻譜利用率高，同步恢復快等優點，並對其進行了工程可實現的改進和模擬。
  13. The error of each technology and revising of the error also are topics of focus. in the last section, the author presents a technical scheme of time and phase synchronization based on gps. furthermore, the maintenance of synchronization is discussed

    第五章在以上基本理論和關鍵技術研究的基礎上，提出了利用gps實現雙基地雷達時間、頻率同步的系統方案，並詳細討論了同步保持的問題，對相應的指標作了進一步的分析、論證。
  14. For performance reasons, you want these different data types to be synchronized at different frequencies

    考慮到性能因素，您希望可以按不同的頻率同步這些不同的數據類型。
  15. So in ofdm system, how to synchronize quickly and accurately is quite important, which affects the performance of whole system

    因此，在設計ofdm接收機時，需要對符號、頻率同步進行有效的估計和補償，盡可能減小對系統性能的影響。
  16. Then simulation and cpe after fft are completed. chapter 5. the fpga realization of symbol and frequency synchronization is described and its results are given

    第五章完成融合方案時域同步模塊中符號和頻率同步各個模塊的fpga實現並給出結果。
  17. Through discussing the samples of ac signal, the basic method to solve spectrum leakage is pointed out, which is to guarantee the same pace between signal frequency and sampling frequency

    通過對交流電信號采樣的討論，指出解決頻譜泄漏的問題的基本方法是保證信號頻率與采樣頻率同步。
  18. In frequency synchronization, we mainly discussed two algorithms of fine frequency synchronizations, and compared them with each other. we adopted the algorithm based on cyclic prefix as the fine frequency synchronization for the system

    頻率同步方面主要提出了兩種精頻偏估計演算法，並對兩種演算法進行比較，採用了基於循環前綴的精頻偏估計演算法作為系統精頻偏演算法。
  19. The latest and maybe most prominent system employing the ofdm modulation technique is the wlan standard ieee 802. 11a. this paper is about the algorithms of synchronization, channel estimation, equalizer and soft - information extraction in the ofdm receiver

    本文基於dvb - tcofdm方案，對ofdm系統接收機的相關演算法進行研究，重點放在同步（包括符號同步、頻率同步和采樣鐘同步） 、通道估計、均衡及解映射等幾個關鍵模塊上。
  20. Usually in ofdm system, the time - domain synchronization in the platform is the symbol - frequency synchronization using pn - sequence preambles. its algorithm has been designed based on the requirement of platform, and validated by matlab simulation. then the verilog program has been designed based on this algorithm

    測試平臺中的時域同步是ofdm系統下基於pn序列的符號和頻率同步，其演算法是根據融合方案時域同步演算法，同時結合測試平臺系統要求設計的，演算法性能已經通過matlab模擬得以驗證。
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