頻譜分佈函數 的英文怎麼說

中文拼音 [bīnfēnhánshǔ]
頻譜分佈函數 英文
spectrum distribution function
  • : 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...
  • : Ⅰ名詞[書面語]1 (按類別或系統編成的書或冊子等) table; chart; register 2 (指導練習的格式或圖形)...
  • : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
  • : 名詞1. [書面語] (匣; 封套) case; envelope 2. (信件) letter 3. (姓氏) a surname
  • : 數副詞(屢次) frequently; repeatedly
  • 頻譜 : frequency spectrum; frequency content; spectrum; power density spectrum; power spectrum; [系統] s...
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. The signal process function of the software include these function : digital filter, windowing, auto - correlation function and cross - correlation function, mean and variance, probability density function and probability distribution function statistic ; auto - power spectrum, cross - power spectrum, frequency response function, coherence function, cepstrum analysis based on fft ( fast fourier transfer ) ; joint time - frequency analysis based on stft ( short - time fourier transfer )

    軟體的處理功能包括:字濾波、時域加窗、自相關與互相關處理、均值和方差計算、概率密度和概率計算;在快速傅立葉變換( fft )基礎上計算自功率、互功率率響應、相干、倒析;基於短時傅立葉變換( stft )的聯合時析等。
  2. Based on the propagation law of the cross - spectral density function in the space - frequency domain, the properties of polychromatic vector gsm beams through a paraxial optical abcd system are studied. the analytical propagation expressions for the cross - spectral density matrix of vector gsm beams passing through a paraxial optical abcd system are derived, which permits us to study the propagation properties of vector gsm beams, including the propagation - induced polarization changes, effect of the spectrum bandwidth and irradiance distributions in a unique way. there are some applications of the theoretical results

    基於空間一率域中交叉密度的傳輸理論,研究了多色矢量gsm光束通過abcd光學系統傳輸時偏振特性的變化規律,首次推出了矢量高斯一謝爾模刑fgsm )光束通過近軸abcd光學系統交叉密度矩陣的傳輸公式,並對矢量gsm光束傳輸中偏振的變化、寬的影響和強度的等進行了統一研究。
  3. Using the theories of probability, algebra and number theory comprehensively, we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions, which are constructed from any two bent functions, are studied, followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values. some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions, whose cryptographic properties are explored by the matrix method, which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher, communications and block ciphers is discussed, which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions, including the complete construction by using the characteristic matrices of boolean functions, and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp, where p is a prime, and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered

    本文首先綜合運用概率論、代學、論等基礎學科的理論知識,並以理論作為主要研究工具,對一類相對均勻的? ?廣半bent、 k階擬bent和p值k階擬廣義bent進行了系統、深入的研究,給出了廣半bent定義,並探討了廣半bent的密碼學性質;給出了k階擬bent和p值k階擬廣義bent的定義及等價判別條件;討論了k階擬bent和p值k階擬廣義bent與部bent和p值廣義部bent的關系,探討了它們的密碼學性質;給出了k階擬bent和p值k階擬廣義bent的典型構造方法,並將對k階擬bent的密碼性質的研究轉化到對一類特殊的矩陣的研究上;利用布爾的特徵矩陣原則上給出了k階擬bent的一種完全構造方法,還給出了從已有的p值k階擬廣義bent出發,遞歸構造變元個更多的p值k階擬廣義bent的方法;初步探討了k階擬bent在序列密碼、組密碼以及通信中的應用;給出了一類布爾walsh解式,並利用這類布爾的walsh解式給出了一類近似穩定的布爾的構造,特殊情形下為k階擬bent;利用代論的知識考察了p值k階擬廣義bent特徵,並給出了k階擬廣義bent與所有仿射的符合率特徵等等。
  4. It ’ s known from the transportation function that the dispersion can only influence the phase of optical pulse ’ s spectrum, which can be easily described by a frequency transfer function

    該方程表明:色散效應只會影響的相位,而對的強度沒有影響,而且色散效應可以簡單的由傳遞表示出來。
  5. Frequency code is not uniformity distribution and keeps to a probability distribution function defined by the spectral characteristics of the target of interest. the phase code is equally duality pseudo - random sequence and used to reduced the sidelobes of the signal correlation function. and the mismatch - phase sequence is corresponding with the frequency sequence one by one

    率編碼為不均勻,由所觀測目標的信息提取出概率密度決定率編碼序列的;相位編碼為二元的偽隨機序列,採取均勻的二相編碼,消減同脈沖帶來的過高的相關的旁瓣;而失配相位為與率編碼相一一對應于各子脈沖中。
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