時間頻率 的英文怎麼說

中文拼音 [shíjiānbīnlǜ]
時間頻率 英文
temporal frequency
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 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
  • 時間 : time; hour; 北京時間十九點整19 hours beijing time; 上課時間school hours; 時間與空間 time and spac...
  • 頻率 : frequency; rate
  1. Wavelet transform, which has a multi - resolution analytic character, is a time - scale ( time - frequency ) analytic method of information. moreover, as both of its time - window and frequency - window can be changed it processes the ability of expressing local characters of information in time - frequency domain

    小波變換是一種信號的時間尺度（時間頻率）分析方法，它具有多解析度分析的特點，而且在時頻兩域都具有表徵信號局部特徵的能力，是一種窗口大小固定不變但其形狀可改變，時間窗和頻率窗都可以改變的時頻局部化分析方法。
  2. The motion - based layered compression scheme in this dissertation is different from the traditional full picture - process method, using different encoding strategy by classify marcoblock in temporal motion, a high encoding efficiency is achieved in experiment

    本文提出的基於運動的分級壓縮演算法，打破了以往時空伸縮全幀處理的概念，實驗中以塊為單位按時間頻率分等級，分別採用不同的編碼策略，達到較好的編碼效率。
  3. At first some modification is made in conventional beam forming of frequency domain, namely to estimate doa by arrays outputs on compensated spacial frequency points of echoes. then the cwt is utilized to signal processing in space - frequency domain for estimation of doa, and the corresponding modification is also made. in the dissertation, the computer simulations of doa estimation for both narrow - band and wide - band echoes are given, so do the necessary comparison among several methods and crb

    首先在傳統的頻域波束形成演算法的基礎上，提出對寬帶信號的頻率補償，也即對寬帶回波信號的各空間頻率根據時間頻率的差異進行相應補償，然後對各陣元輸出求和來得到方位估計；其次將連續小波變換引入到空間?頻率處理中，從而完成對目標方位的估計，並進行了相應地補償。
  4. Verification system of time and frequency measuring instruments

    時間頻率計量器具檢定系統
  5. Time and frequency dissemination via television signals

    利用電視信號傳送標準時間頻率
  6. Journal of time and frequency

    時間頻率學報
  7. Though there are many methods in the field of speckle filtering, it lacks deep study of methods selection with different images and in different atr missions

    本文對採用空間域常用的濾波演算法、時間頻率域相結合的濾波演算法濾除sar圖像噪聲的結果進行了比較。
  8. In section 4, by making use of the fourier transformation for spatial variables and starting from the nonparaxial propagating equation of ultrashort pulsed beam in temporal frequency domain, the nonparaxial solution basing on the paraxial propagating solution was derived, which come to exact solution by iterative of the paraxial integral solution

    在第四節里，通過採用空間變量的傅立葉變換和利用時間頻率域下的非傍軸傳輸方程，我們得出了超短脈沖光束傳輸的非傍軸的修正方法。
  9. The first full - color two - way video teleconferencing service is offered. the development of tfm ( time frequency multiplexing ). the first compact disk players are available for sale in the u. s

    第一個全彩色雙向電視電話會議業務開通。開發tfm （時間頻率多路復用） 。美國開始出售第一個光盤播放器。
  10. To detect transient signals under complex background, a novel method of aliasing - free exponential bilinear time - frequency distribution is presented in this paper, which can avoid the frequency aliasing and information loss existing in the traditional bilinear distributions, reduce the cross - terms effectively and possess high time - frequency resolution

    摘要針對復雜背景條件下瞬時信號的探測，提出一種新的無混疊雙線性時間頻率分佈方法，該方法能夠避免常用的雙線性時頻分佈中的頻率混疊與信息丟失，有效減小交叉項干擾，而且具有較高的時頻解析度。
  11. If topic # 1 is not presented, this proposed seminar could include a brief overview of the fundamentals of time and frequency metrology and standards as in # 1, before focusing in more depth on practical metrology

    如果上一專題未宣講，應先做一個時間頻率計量學基礎的簡要介紹，然後才可以著眼與深入的實踐計量學。
  12. A more in - depth discussion of commercially available time and frequency measurement equipment and standards, and how such instrumentation can be used in the metrology laboratory

    市場上可用的時間頻率測量設備和標準的更深入的討論，以及此類儀器如何應用在計量實驗室。
  13. The results show this approach is effective when there is massive cloud cover on the remote sense image. wavelet analysis is internationally recognized up to the minute tools for analyzing time - frequency. it is chiefly due to the " adaptive feature " and " mathematical micro - telescope feature "

    小波分析是目前國際上公認的最新時間-頻率分析工具，由於其「自適應性」和「數學顯微鏡性質」而成為許多學科共同關注的焦點，本文利用小波改善傳統數字圖像處理方法，取得了一定效果。
  14. Abstract : a software method of frequency - modulated signal demodulating based on wavelet packet is proposed in this paper. a variety of frequency - modulated signals are analyzed in time - frequency domain and the spectrograms are presented. this method can detect instantaneous frequency effectively and get frequency - modulated information, can be widely applied to dynamic testing and software radio

    文摘:提出了基於小波包的調頻波解調方法，通過對各種調頻信號進行時頻分析，給出了信號的時間?頻率譜圖，能有效地檢測到瞬時頻率和獲取調頻信息，該方法可廣泛應用於動態測試和軟體無線電等領域。
  15. For both variables, the default is 5 seconds

    對于這兩個變量，默認的時間頻率都是5秒。
  16. An improved joint timing and frequency synchronization method for ofdm

    聯合時間頻率同步演算法
  17. The second part of this paper introduces the study of frequency and time measurement techniques

    本文在第二部分詳細介紹了在時間頻率測量領域內的研究。
  18. Overview of the different kinds of time and frequency standards and measurement services that are available, through nist, other nmis, and the private sector

    概述目前可用的美國nist 、各國國家計量院和私有的各種時間頻率標準、測量設備。
  19. The time shift marked the time in history when the planet entered a new sequencing of energy that after a magnetic pole shift in 2000, will be complete in december, 2012

    時間替換標志著2000年磁極轉換後行星進入新的時間頻率里，會在2012年12月完成。
  20. Wavelet transformation is a time - scale and time - frequency signal analysis. it has many desirable properties, and has been widely applied in many fields

    小波分析是一種信號的時間? ?尺度分析和時間? ?頻率分析方法，它具有很多優良的特性，在實際工程中得到了廣泛的應用。
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