pilot frequency 中文意思是什麼

pilot frequency 解釋
導頻,領示頻率
  • pilot : n 1 領港員，舵手；【航空】駕駛員，飛行員；領航員；【火箭】起動人員；指導員，領導人；〈美國〉向導...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. The estimation of frequency offset is based on pilot symbols and non - pilot symbols. this paper also discusses some parameters in the method and gives the way of compensation. to get the estimation method of doppler spread width, we model the rayleigh channel based on the conclusion of gans ’ spectrum analysis based on clarke model

    其中頻偏估計採用一種基於導頻符號和去極性非導頻符的方法進行估計，並通過試驗環境驗證了此方法，並確定了這個方法中的參數的取值，在此基礎上介紹了本系統中的頻偏補償方法。
  2. " the project aims to develop middleware for manufacturing, retail and distribution companies in the prd region to integrate rfid radio frequency identification data with back - end systems, business processes and logistics and scm supply chain management solutions, " said professor tan chung - jen, director of eti, hku. " eti will head the development of the core technology and collaborate with partner universities to develop applications and pilot projects with local enterprises in the region.

    這個專案的目的是為珠三角地區的製造、零售、物流等行業開發一套中間件，將rfid資料與企業的后臺系統、商業過程以及物流和供應鏈管理等系統集成一起，香港大學電子商業科技研究所（ eti ）總監譚崇仁教授指出， 「 eti將領導核心技術的研發工作，與合作大學一起開發應用程式，並在珠三角地區的企業中實施試驗專案。
  3. Pilot frequency recording ; pilot frequency, running speed, track positions, magnetization

    導頻記錄.導頻.運行速度.磁跡位置.磁化
  4. A pilot system of high frequency radar has been built in hit

    哈爾濱工業大學已建立了高頻雷達的試驗系統。
  5. According to the results of experiments, the stability of detection and the significance of photocurrent normalized are discussed. how the illumination mode, the frequency and the resistance of photocurrent loop affect the response of photocurrent is analyzed in detail. and the pilot study on the real - time detection of laps system has been done

    根據實驗結果分析討論了新系統的測量穩定性，以及光照射方式、光調制頻率和光電流迴路阻抗對光電流響應的影響，以及光電流歸一化處理的重要性，並且初步研究了laps系統的實用化實時檢測。
  6. In the synchronous techniques based pilot symbols, here propose a frequency offset estimating arithmetic using discrete pilot symbols. we pick up integer times sub - carrier frequency offset from the same ofdm symbol and estimate exact

    此外，在頻偏估計方面，推導出短訓練序列前後兩段時域符號間的關系，並利用此進行粗頻偏估計，使頻率偏移的估計范圍大大增加。
  7. Aimed at the characteristics that multi - carrier transmission is sensitive to frequency offset and require high synchronization performance, firstly multi - carrier ofdm technique is introduced, the influence of synchronization offset to ofdm system is analyzed and two kinds of typical synchronization methods are given based on pilot and cp in the paper

    針對多載波傳輸對載波偏移敏感，對同步要求高的特性，論文首先介紹了多載波ofdm技術，分析了同步偏移對ofdm系統性能的影響，給出了基於導頻和循環前綴的兩種典型的同步方法。
  8. The main works and innovations of this thesis are as follows : ( 1 ) based on the oversampling of ofdm frequency response, this paper proposes a channel estimator which combines the comb - pilot - tones partitioning and the fourier transform with the same pilot symbol samples

    具體而言，主要有以下六個方面的工作和創新點： （ 1 ）利用在ofdm系統中通道的頻域響應是過采樣的特性，提出了在頻域內用均勻梳狀分佈的導頻符號和與導頻符號數相同點的傅里葉變換相結合的通道估計方法。
  9. Pilot frequency recording ; test tapes 19 and 38

    導頻記錄. 19和38導頻試驗帶
  10. There are different ways to make the bit synchronization, for example : the technique of the pilot frequency, the technique of some change about the baseband signal

    為了保證在同步傳輸系統中的位同步，有導頻及對基帶信號信號直接變換的方式，直接變換的方式中，使用線路編碼是比較常見的。
  11. It is better to group pilot tones together into clumps that are equispaced in the frequency domain

    可以證明，在快時變環境下，分組且每組等間隔分佈於頻域上的導頻序列有著更好的系統性能。
  12. According to the present problems and developing tendency of hydraulic turbine governor, four main issues of this field are studied in this paper. the content include hydraulic control system, frequency measurement unit, stability of the discrete control system, optimization of control parameters and self - adjusting pid control strategy based on fuzzy logic. several main achievement and results are obtained and shown as follows : the electric - hydraulic pilot valve driven by step - motor is firstly proposed, which solves the problem that the electric - hydraulic converter of hydraulic turbine governor hydraulic servo is prone to be stuck and blocked and improves the systemic stability greatly

    本文根據水輪機調節領域存在的問題和發展趨勢，對水輪機調速器的液壓控制系統、頻率測量環節、離散調節系統穩定性與調節參數最優整定以及適應式參數自調整pid控制策略進行了研究，得到以下主要成果和結論：首次提出了採用步進電機驅動的步進式電液引導閥，從根本上解決了水輪機調速器電液隨動系統中存在的電液轉換元件發卡、堵塞問題，使電液隨動系統的可靠性大大提高。
  13. A pilot subcarrier - based joint frequency offset correction and channel estimation method for ofdm systems

    系統中一種基於導頻子載波的聯合頻率偏移糾正和通道估計方法
  14. The principle and characteristics of ofdm system are introduced first. then several key technologies of channel estimation and equalization for ofdm are discussed in detail, including pilot signal based channel estimation methods, cyclic prefix based channel estimation method, frequency domain adaptive filtering method and time domain equalization method for long channel impulse. the corresponding comparison and simulations are also provided

    文中討論了利用導頻信號的通道估計方法，利用循環前綴進行通道估計的方法， ofdm信號均衡中自適應濾波技術，及通道沖擊響應長于循環前綴時利用時域均衡減少解調器輸入信號拖尾長度的方法，分析了這些方法的原理，並通過計算機模擬驗證了這些方法的性能。
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