自相關函數 的英文怎麼說

中文拼音 [zìxiāngguānhánshǔ]
自相關函數 英文
acf
  • 自 : Ⅰ代詞（自己） self; oneself; one s own Ⅱ副詞（自然;當然） certainly; of course; naturally; willin...
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 關 : Ⅰ動詞1 （使開著的物體合攏） close; shut 2 （圈起來） shut in; lock up 3 （倒閉; 歇業） close down...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 相關 : be interrelated; be related to; be bound up with; correlation; dependence; relevance; mutuality
  • 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 autocorrelation function is an even function.

    自相關函數是一個偶函數。
  2. ( 2 ) it explains the basic concept of time series, some kinds of the common time series models and the development characteristics of time series in detail. it analyses how to judge the model from the self - related function and the deviation related function. determining a better standard to set up models from the comparison of some kinds of fixed step time series standards, then predicts utilizing the counter function

    （ 2 ）詳細闡明了時間序列的基本思想、幾種常見的時間序列模型以及時間序列的動態特徵，分析了如何利用自相關函數和偏相關函數來對模型進行判定，通過對時間序列的幾種定階準則的比較，確定一種好的定階準則來建立模型，從而可以利用逆函數法進行預報。
  3. This paper proposes an algorithm for fetal electrocardiogram ( fecg ) extraction, which is based on joint maximization of kurtosis and autocorrelation

    摘要針對胎兒心電圖提取問題，提出了一種基於峭度和自相關函數聯合最大化的演算法。
  4. For phase space reconstruction of ship - radiated noise, using auto correlation function and mutual information to select the delay - time, and using false nearest neighbors method to select the embedding dimension

    從自相關函數及互信息嫡兩個方面討論了相空間重構中延遲時間的選擇。
  5. This method uses two spatially separated receiving equipment. cross correlation of the two outputs will therefore yield the auto correlation function ( acf ) of the signal, plus noise which is spread uniformly over the whole width

    該演算法採用空間上分離的兩路接收設備，通過對包含同一個信號的2個輸出信號互相關，得到信號窄自相關函數（ acf ）和在整個帶寬里均勻分佈噪聲成分。
  6. Two detection methods of chirp signals are presented in the dissertation : the cyclic autocorrelation detection method and the correlation detection method of cyclic autocorrelation function. it is shown that the two methods both have an excellent performance of blind detection. the performance analyses of the two detection methods are both carried out for additive noise or multiplicative noise, and the output signal - to - noise ratio ( snr ) expressions of the two methods are also derived

    通過研究提出了兩種線性調頻信號的檢測方法?基於循環自相關函數包絡的檢測方法和基於循環自相關函數的相關函數包絡的檢測方法，兩種方法均可實現信號的盲檢測，有良好的檢測性能，文中還分析了加性噪聲及存在乘性和加性噪聲情況下兩種檢測方法的性能，推導出了輸出信噪比公式。
  7. We develop some methods for evaluating the security of lsb steganography using randomness test and two - dimension self - correlation function. 4 ) evaluation of the statistical visibility of information hiding algorithms

    提出了基於二維自相關函數徑向譜和隨機性檢驗（包括順序檢驗、遊程檢驗和一維自相關檢驗）的lsb信息隱藏安全性評估方法。
  8. At the doppler centroid aspect, this paper make use of maximum value method ; energy method and autocorrelation function method to estimate doppler centroid. at the doppler frequency aspect, this paper make use of image offset method ; time - frequency method ; minimum entropy and fractional fourier transformation method to estimate doppler frequency rate

    在多普勒參數估計中，採用了最大值法、能量法和自相關函數法進行多普勒中心頻率估計;採用了圖像偏移法、時頻分析法、最小熵法和分數階傅里葉變換法進行多普勒調頻斜率估計。
  9. A new algorithm improving watermarking robustness based on a self - reference concept and exploits special autocorrelation features ( acf ) of a spatial template is proposed in this paper

    摘要提出一種改進的基於自參考概念和空間模板的自相關函數特性的數字水印演算法。
  10. In the first session the fans vibration on - line monitoring system is realized with vc language, also compile auto power spectrum density function, cross power spectrum density function, autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis

    首先用穩定性強、擴展性好的vc + +語言開發了通風機振動在線監測系統，並編寫了自功率譜密度函數、互功率譜密度函數、自相關函數和互相關函數等頻譜分析函數來進行簡單的離線故障診斷。
  11. Time delay was chosen by using autocorrelation function method and mutual information method, while reconstruct dimension was obtained by g - p saturation correlation dimension method and false nearest neighbor percentage method. furthermore, initial neighborhood radius was computed by the estimated noise level based on the g - p saturation correlation dimension method. secondly, a noise reduction of the inflow time series was carried out by chaotic nonlinear local projection noise reduction method, and the effects on noise to chaotic characteristics and state reconstruction parameters were discussed

    採用g - p關聯維法計算關聯維數； rosenstein法和kantz法計算最大lyapunov指數；重構相空間的延遲時間採用了自相關函數法和互信息量法；嵌入維數採用了飽和關聯維法和偽鄰近點法；初始領域半徑的選取採用了基於g - p關聯維法的噪聲水平的初始估計方法。
  12. A scheme to identify the stochastic signal and its modes by computer is introduced and using the method of the autocorrelation functions for recognizing the stochastic audio signal fleet has been applied

    摘要分析了利用自相關函數法實現快速識別隨機音頻信號，介紹一種用計算機實現隨機音頻信號處理與模式識別的硬體結構和程序設計。
  13. The work of this dissertation is focused on research of some key technics in signal design and processing of mcpc signal. the main content of the dissertation is summarized as follows : it gives a detailed description of the form of the mcpc waveform and its mathematical model, and analyses the formation and properties of phase coded sequence. it discusses the effect of signal parameters on autocorrelation, power spectra and ambiguity function in forms of single pulse and pulse train and compares different kinds of single pulse signals and pulse train signals

    本文圍繞著多載波相位編碼信號在信號設計與信號處理的若干關鍵問題進行了研究，主要做了以下工作:描述了多載波相位編碼信號（ multicarrierphasecoded ，簡稱mcpc ）的信號形式，給出了其數學模型，對其中相位編碼序列的構成方式與特性進行了分析;從單脈沖和脈沖串兩種信號形式入手，對多載頻相位編碼信號的參數在自相關函數、功率譜密度和模糊方程上的影響作了詳細地討論，對不同調制方式的單脈沖和脈沖串信號進行了比較。
  14. The autocorrelation function of the pn code is similar to that of the white noise, which has the randomicity. the pn code phase modulation fuze just works on the basis of this characteristic. the fuse, having excellent cut - off performance of the distance and strong anti - jamming capability, is one of the radio fuze of the predominant performance

    偽碼引信是利用偽隨機序列的自相關函數類似於白噪聲相關函數的隨機特性而工作的，這種引信距離截止特性好，抗干擾能力強，是一種性能優越的無線電引信。
  15. The author makes a stabilized and zero mean treatment of the statistic data on the per capita annual net income of henan farmers between 1978 and 2005, and using the property of the autocorrelation function and partial autocorrelation function of time sequence, establishes the model appropriate for the data

    摘要筆者根據河南省1978年2005年的農民人均純收入統計數據，將這些數據進行平穩化、零均值化處理，並利用時間序列的自相關函數，偏自相關函數的性質，確認數據所適合的模型。
  16. The time - domain filter can then be used to select the narrow central portion of the cross correlation function ( ccf ), capturing virtually all of the signal but rejecting most of the noise

    對相關函數進行時域濾波，挑選出互相關函數中窄信號自相關函數部分，去掉剩餘的大部分噪聲能量，得到加窗互相關函數（ ccf ） 。
  17. Then the resonance demodulation technique is used in analyzing the vibration signal of the gear and ball bearing. to some extent the results depend on the selected frequency band

    這一方法的實現步驟是首先對測得的振動信號進行自相關分析，再對自相關函數進行時延，然後對時延後的自相關函數進行hilbert變換解調。
  18. Self correlation function

    自相關函數
  19. Based on the characteristics, an auto - correlation function method is obtained to estimate fractal dimension

    研究離散高斯噪聲的自相關函數的性質。
  20. Methods based on spatial frequencies evaluate the coefficients of the autocorrelation function of the texture

    基於空間頻率的方法估計紋理的自相關函數。
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