自相关函数

Spatial variability ; autocorrelation coefficient ; semivariance function ; cross correlation coefficient ; soil salinity and sodicity

空间变异性；自相关系数；半方差函数；互相关系数；土壤盐碱度

If the recorded data have the same or similar course as played signal then the autocorrelation function returns maximum.

如果记录的数据与演奏信号同样或相似，自相关作用的函数会返回最大值。

In this paper we use the nonparametric MLE of the marginal distributions of Xt and Yt to construct estimates of the mean, autocovariance and autocorrelation functions of the original signal process {Xt}.

本文在左截断数据模型下估计平稳信号过程的{Xt}均值，自协方差函数，和自相关系数。

A uniform auto-correlation and cross-correlation probability distribution functions of digital correlator is derived from the probability and statistics theory.

从概率论与数理统计出发，推导了一种统一的数字相关器的自相关峰和互相关峰的概率分布函数。

Furthermore, a Maple program is designed to verify the validity of the autocorrelation.(2). Based on Whiteman\'s generalized cyclotomy, new binary generalized cyclotomic sequences of order 2~k and length pq are constructed.

构造了一类平衡的新的六次剩余序列，分别利用多项式分解理论和迹函数表示确定了该类序列的线性复杂度和极小多项式，给出了序列的自相关函数值并编制Maple程序验证该结果的正确性，讨论了序列的稳定性。

The first is a probabilistic model; its output process has the same one-dimensional distribution as input process and has correlation structure as normal AR and MA model; its speed is quite high; its hardware implementation is quite simple.

法一是一个概率模型；其输入输出序列的一维概率分布相同，输出序列的相关函数类似通常的自回归和滑动平均过程，输出功率谱形状较为单一；其随机数输出速度较高；其硬件实现简单。

Then according to the characteristic of LFMCW fuze signal,the characteristic parameter is extracted based on periodic ambiguity function.

该方法首先对侦察接收到的信号作二维自相关变换，分析LFMCW引信信号的周期模糊函数特征，然后结合LFMCW引信信号本身的特性，在相关域提取LFMCW引信信号的特征参数。

Through the similar comparison operation conducted by standard self-correlation function formed with sinusoidal current the short circuit current and the inrush current can be distinguished by the magnitude of similarity coefficient.

这里，我们把启动电流还是短路电流看作随机信号，对数字信号相关函数原理的取样数据进行了分析以及对取样数据的自修正功能进行了计算。

To apply ARIMA models the time series needs to be stationary. A stationary time series is one whose statistical properties such as mean, variance and autocorrelation are constant over time. If the initial time series is not stationary it may be that some function of the time series, e.g. taking the differences between successive values, is stationary.

运用ARIMA模型时时间序列必须是固定的，一组固定的时间序列是它的统计特性诸如平均值＼差异和自相关等随着时间的推移而始终不变，如果最初的时间序列不固定这是由它的某些函数引起的，以序列值之间的差额为例，它们是固定的

The results showed that soil electrical conductivity had obviously spatial variability,and semi-variance and Moran's I coefficient analysis accordantly illuminated that the spatial correlation range was large and the relativity was strong on 30 April,29 June and 16 November;while the spatial correlation range was small and the relativity was weak on 20 April,14 July and 16 August.

结果表明：土壤电导率具有明显的空间变异性，半方差函数和Moran's Ⅰ系数分析说明了4月30日、6月29日和11月16日的空间自相关范围较大，相关性较强；4月20日、7月14日和8月16日的变程偏小，空间相关性较弱。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了