自相关函数

基于小波变换和自相关函数的基音频率检测算法

Algorithm for Fundamental Frequency Detection Based on Wavelet Transform and ACF

利用Al2O3粉末研磨的全息干版玻璃作为散射屏，根据理论分析和实验研究，对散斑光强的自相关函数进行了测量。

Using Holographic Plates abraded by Al 2O 3 powers as scattering screens , the autocorrelation function of speckle 's intensity is analyzed by theory and experiment .

伪码对N倍钟码数字调制后的自相关函数与功率谱

Autocorrelation functions and power spectrums of PN code-digitally-modulated n-times clock codes

基于MATLAB的自相关函数基音检测的优化

The Autocorrelation Function based on MATLAB Optimization of Pitch Detection

q元m序列非周期自相关函数的估计与M序列的分段线性化

Estimates of aperiodic correlation functions of q-ELEMENTS m-sequences and piecewise linearization for m-sequences

基于自相关函数建模的小波域SAR图像去斑方法

Speckle Reduction of SAR Image Based on Modeling of Autocorrelation Function of Wavelet Coefficients

关于谱及平稳随机过程的n阶导数通过线性动力学系统输出的自相关函数的谱表示

Spectrum and Spectrum Indication of Output Correlation Function of the n-th Derivative of Stationary Stochastic Processes Passing Through Linear Dynamics System

广义部分Bent函数及其自相关函数特征和谱特征

Generalized Partially Bent Functions and Characteristics of the Auto correlation Functions and Spectrum

在理想情况下，CDMA通信系统中使用的扩频序列集中：每个扩频序列的自相关函数应该是一个冲激函数，即除零时延外，其值应处处为零；

Ideal spreading codes used for CDMA system should have impulsive-like auto-correlation functions and zero cross-correlation functions .

布尔复合函数的Walsh循环谱和自相关函数

Walsh Spectrum and Auto-correction Function of Boolean " Composition Function "

多输出函数的自相关函数特征及Walsh谱特征

Auto-correlation function characteristics and Walsh spectral characteristics of multi-output functions

逆自相关函数及其在ARMA模型识别中的作用

Improve the Effectiveness of Identifying ARMA Models with the Application of the Inverse Autocorrelations

该算法与FFT和基于自相关函数的MUSIC算法相比，能更有效地抑制高斯色噪声的影响采用相关高斯色噪声进行数值仿真，结果表明该方法的有效性。

Compared with FFT and algorithms based on correlation like the MUSIC , the new method can effectively reduce the influence of Gaussian color noise .

在已有的单载波系统多普勒估计算法的基础上，结合OFDM符号已有的循环前缀，通过计算循环前缀的归一化自相关函数，得到最大多普勒频移。

By calculating the auto-correlation function of cycle preamble of OFDM symbol , the maximum value of Doppler frequency excursion is obtained .

多tau光子相关器中自相关函数的归一化方法

Normalization of Autocorrelation Function for Multiple-tau Photon Correlator

目的：测试X线照片斑点的自相关函数（auto－corelationfunction，ACF）。

Purpose : To test ACF ( auto correlation function ) of granules on radiograph .

本文采用样本自相关函数法、传统的R／S分析法和修正的R／S分析法来检验我国沪深两股市收益和波动的长记忆特征。

Using sample autocorrelation function , classical R / S analysis and modified R / S method , we detect long memory of return series and volatility series of Shanghai and Shenzhen .

结合FPGA特点，讨论简化短时自相关函数法实现基音周期的估值，并介绍单bit方法应用于语音信号频域分析。

Based on the characters of FPGA , give simplify method of short-time Autocorrelation function for the pitch estimation , and discuss one bit quantify apply in the speech signal frequency analyze .

目的介绍逆自相关函数的意义，说明其在ARMA模型识别中的作用。

Objective The concept of the inverse autocorrelations was given , and its applications in indentifying ARMA models were displayed .

本文介绍了地学统计学（geostatistics）中关于自相关函数、方差图的基本概念。

Ome concepts of geostatistics , Such as variogram and range , were introduced in this pa-per .

采用完整的Zernike矩自相关函数集合提取彩色纹理的空间结构信息。

A complete set of Zernike moment correlation functions is used to capture spatial structure of a color texture .

通过对含Langevin项噪声源的多模速率方程的分析，利用状态空间法得到光强噪声及其自相关函数的分析解；

Analytical solution to rate equation with Langevin noise is described by a state-space method .

基于自相关函数和峭度的FECG提取算法研究

Study on FECG Extraction Algorithm Based on Autocorrelation and Kurtosis

模拟了裂纹数密度的自相关函数为二维指数椭圆型、Gaussian型函数的非均匀各向异性随机裂缝岩石模型（分别记为指数椭圆型及Gaussian型非均匀随机裂缝岩石）。

As examples , heterogeneous anisotropic fractured rocks of which the autocorrelation functions of crack number density can be described as 2-dimensional exponential ellipsoidal or Gaussian function were simulated especially .

给出了多输出函数线性结构的广义自相关函数特征和广义Walsh谱特征。

It discusses the linear construction of multi-output functions and obtains the generalized autocorrelation function and generalized Walsh spectrum of the linear construction .

然后对自相关函数适当延迟以尽量避开噪声影响，再进行Hilbert变换，以求得解调结果。

Then the autocorrelation functions are delayed for some time lags , which will reduce the noise further . The delayed autocorrelation is then demodulated by Hilbert Transform .

本文用背散射光时间自相关函数研究了随机介质中隐一生物组织时的成象，由相关时间τc确定出隐含物体的位置。

In this paper , the imaging of an bio-tissue hidden in multiple scattering random media was studied with the temporal auto-correlation function of back-scattering light . The location of the bio-tissue hidden in turbid media was restored with the correlation time τ c.

基于mod（p）域的所有p值m序列（p≥2，p为素数）的异相自相关函数是常数，其常数值为1/2，并证明了其移位特性。

P-value m-sequence ( p ≥ 2 , p is prime number ) with self-correlative function based on mod ( p ) area in different phase is a constant , the value is 1 / 2.It proves its shift characteristic .

其自相关函数的Yule-Walker方程与ARMA（n，m）模型具有相同的结构。

The Yule-Walker 's equation of the function of autocovariance of the model is the same as that of an ARMA ( n , m ) model .

并利用混沌序列的伪随机特性，通过计算映射的自相关函数、互相关函数等随机数值特性，结合Lyapunov指数，分析了混沌序列的保密性能。

By means of pseudo-random features of the chaotic sequence , the security of chaotic sequence is analyzed through the calculation of auto-correlation function and cross-correlation function combing with the Lyapunov exponent .