autocorrelation function造句

• The autocorrelation function is an even function .
  自相关函数是一个偶函数。
• Methods based on spatial frequencies evaluate the coefficients of the autocorrelation function of the texture
  基于空间频率的方法估计纹理的自相关函数。
• Maximum value method is fast but not accurate , autocorrelation function method is accurate and have a good effect form radar image according to their estimate methods
  在多普勒中心频率估计中,最大值法简单,但精度不高,自相关函数法有较高的估计精度。
• Then by using the inverse autocorrelation function we get another means of moments parameter estimates on the ma part of arma ( p , q ) , cleveland - parzen estimates
  从而通过逆自相关函数得到了arma ( p ， q )过程ma部分的参数的另一种矩估计方法， cleveland - parzen估计。
• 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关函数法实现快速识别随机音频信号，介绍一种用计算机实现随机音频信号处理与模式识别的硬件结构和程序设计。
• To model the elastic properties of rocks with distribution fractures , a new heterogeneous anisotropic constitutive model was presented . in this model , the autocorrelation function is used to describe the spatial distribution of crack number density
  提出一种新的非均匀各向异性本构模型来模拟具有分布裂缝的岩石，在这个模型中用自相关函数来描述裂纹数密度的空间分布。
• The core of the proposed new cdma system is the use of orthogonal complete complementary codes , whose autocorrelation function is zero for all even and odd shifts except the zero shift and , whose crosscorrelation function is zero for all possible shifts
  在本系统中，利用完全互补码处处为零的互相关特性和自相关的旁瓣为零的特性，可有效消除系统的多址干扰，提高系统的容量。
• We consider a causal , stationary , autoregressive , moving average [ arma ( p , q ) ] process with heavy tailed noise variables . we develop the definition of the inverse autocorrelation function , and obtain the g - spectral estimator of the inverse autocorrelation function
  本文基于噪声序列具有重尾分布的因果、平稳自回归滑动平均[ arma ( p ， q ) ]过程，给出了其逆自相关函数的定义，并且给出了逆自相关函数的g -谱估计。
• The correlation detection using the periodicity of the direct sequence autocorrelation function can estimate the symbol period at intermediate frequency or at baseband . simulation results indicate that the former is superior to the latter when the demodulated frequency is unequal to the carrier frequency
  时域相关检测方法利用扩频信号的周期自相关特性，能在中频和基带对扩频码周期进行估计，仿真结果表明中频检测时性能较好。
• 3 . the calculating table of the autocorrelation functions are constructed and their essence and abilities are revealed . furthermore , the new concept of general autocorrelations is presented for the calculation of the order of sac ( strict avalanche criteria ) and pc ( propagation criteria )
  3 、构造了自相关函数的计算表，分析其本质含义，解释其在分析密码性质方面的功能；进而提出了广义自相关函数的概念，有效地解决了严格雪崩准则和扩散准则阶数的确定问题。
• One is using the autocorrelation function to detect the speech terminal , the other is using the coefficients based on the one - sided autocorrelation sequence to replace the original speech signal and then extract the speech feature to recognize . isolated word recognition experiment based on dtw shows : it can reduce the disturbance of noise effectively and get the high recognition rate . it is of great advantage to apply when snr signal to noise rate is low
  对含噪语音在自相关域上进行处理，以其自相关函数值为参数进行端点检测，以基于单边自相关序列的lpc倒谱系数作为语音的特征参数进行语音识别，实验表明：这种方法较好地消除了噪声对语音信号的干扰，并获得了较高的识别率。
• 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
  通过研究提出了两种线性调频信号的检测方法?基于循环自相关函数包络的检测方法和基于循环自相关函数的相关函数包络的检测方法，两种方法均可实现信号的盲检测，有良好的检测性能，文中还分析了加性噪声及存在乘性和加性噪声情况下两种检测方法的性能，推导出了输出信噪比公式。
• The use of wave packet to analyze the dynamics of quantum mechanical systems is an increasingly important method to the study of the classical - quantum correspondence . using the quantum gaussian wave packet analysis method , we calculate the autocorrelation function of the rectangular billiard , the peak positions of the autocorrelation function match well with the periods of the classical periodic orbits , which show that the period of the classical orbits can be produced by the time - dependent quantum wave packet method . we also discuss wave packet revivals and fractional revivals in the rectangular billiard , the results show that there are exact revival for all wave packet at each revival time . we find additional cases of exact revivals with short revival times for zero - momentum wave packets initially located at special symmetry point inside the billiard
  利用波包分析量子力学体系的动力学行为在研究经典和量子的对应关系方面越来越成为一个非常重要的方法.利用高斯波包分析方法,我们计算了矩形弹子球体系的自关联函数,自关联函数的峰和经典周期轨道的周期符合的很好,这表明经典周期轨道的周期可以通过含时的量子波包方法产生.我们还讨论了矩形弹子球的波包回归和波包的部分回归,计算结果表明在每一个回归时间,波包出现精确的回归.对于动量为零的波包,初始位置在弹子球内部的特殊对称点处,出现一些时间比较短的附加的回归
• 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
  摘要笔者根据河南省1978年2005年的农民人均纯收入统计数据，将这些数据进行平稳化、零均值化处理，并利用时间序列的自相关函数，偏自相关函数的性质，确认数据所适合的模型。
• The effects of heterogeneous anisotropic random fractured rocks with different autocorrelation length and different autocorrelation function were discussed . the results show that : l ) the scattering effects become weaker when the autocorrelation length becomes larger . 2 ) the exponential ellipsoidal random fractured rock has different scattering effects on waves in different coordinates direction , and 3 ) . the gaussian random fractured rocks has the same
  通过模拟发现: 1 )随着自相关长度的增加，岩石的非均匀性对波的散射作用减弱; 2 )指数椭圆型随机裂缝岩石对弹性波在两个坐标方向上造成的散射不同; 3 ) gaussian型随机裂缝岩石对弹性波在两个坐标方向上有相同散射作用。
• 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
  首先用稳定性强、扩展性好的vc + +语言开发了通风机振动在线监测系统，并编写了自功率谱密度函数、互功率谱密度函数、自相关函数和互相关函数等频谱分析函数来进行简单的离线故障诊断。
• 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 . the results show that : 1 ) the random distribution characters could be different for different elastic constants under the same random distribution of crack number density . 2 ) the exponential ellipsoidal heterogeneous anisotropic random fractured model could be a suitable model for the multi - scaled and self - similar heterogeneous media
  模拟结果表明： 1 )弹性常数的分布特征与裂纹数密度的分布特征不相同，并且裂纹数密度对不同的弹性常数有不同程度的影响； 2 )指数椭圆型随机裂缝模型适用于模拟具有多尺度、自相似的特性非均匀裂缝岩石； 3 ) gaussian型随机裂缝模型适用于模拟单尺度、平滑的非均匀裂缝岩石。
• 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
  伪码引信是利用伪随机序列的自相关函数类似于白噪声相关函数的随机特性而工作的，这种引信距离截止特性好，抗干扰能力强，是一种性能优越的无线电引信。
• 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
  采用g - p关联维法计算关联维数； rosenstein法和kantz法计算最大lyapunov指数；重构相空间的延迟时间采用了自相关函数法和互信息量法；嵌入维数采用了饱和关联维法和伪邻近点法；初始领域半径的选取采用了基于g - p关联维法的噪声水平的初始估计方法。
• 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
  在多普勒参数估计中,采用了最大值法、能量法和自相关函数法进行多普勒中心频率估计;采用了图像偏移法、时频分析法、最小熵法和分数阶傅里叶变换法进行多普勒调频斜率估计。