自相关函数

The mechanical mathematics model of system was built, and the computer numerical value simulation was carried out. Taking the rotation speed and damping as the furcation parameters and combining with Poincare sectional view, oscillogram, phase plane plot, locus of axle center, power spectrum graph and self correlative functional diagram, the kinetic status of system was analyzed.

建立了系统力学数学模型，进行计算机数值模拟，以转速和阻尼为分叉参数，结合Poincare截面图、波形图、相平面图、轴心轨迹图、功率谱图和自相关函数图，分析了系统的运动状态。

In order to detect the strong influence points in attribute sequence, this paper introduces the perturbation theory of autocorrelation function in the mean time having several minute perturbations.

为了探测时间序列中的强影响点，介绍了同时对几个点作微小扰动时自相关函数的扰动理论。

S for a random signal, self-correlated function can always be the integrate token of its statistic average value.

bstract 对于一个随机信号，自相关函数往往最能完整地表征它的统计平均值。

The identified two orders models under three different load conditions are validated by step disturbance method and self-relation function method.

对所得三种不同负荷水平下的二阶离散型水轮机模型，应用阶跃扰动法和自相关函数法进行检验。

The method connects the exponentially attenuating dividable auto-correlation function which is often used in the study of the lubricating behaviors of rough surfaces, to the theoretical model for studying the contact behaviors of rough surfaces and it will be a foundation for studying the lubrication and failure problems of sliding frictional pairs with anisotropic surfaces.

第三章对Onions-Archard的理论接触模型进行扩展，给出了计算各向异性粗糙表面接触性能的简便方法，并将粗糙表面润滑效应研究中常用的表征粗糙表面的指数衰减可分自相关函数和粗糙表面接触性能研究的理论模型联系了起来，为研究混合润滑工况下各向异性粗糙表面摩擦副的润滑和失效问题提供了基础。

Using the autocorrelation function, the principal of homodyne method is explored. The relationship between delay time induced by delay fiber and characteristics of additive frequency-domain fluctuation affixed on homodyne beat noise photoelectric-current spectrum are intensively analyzed.

一、利用自相关函数研究了零拍法测量激光线宽的原理，重点考察了零拍光电流谱线上所附加的频域周期性波动，确定了该波动的频域周期与光纤延时线所产生的时延成反比。

This method can be presented as a theory tool for time sires modeling based on high order cimilant in fault diagnosis.

由于该方法是基于高阶累计量的，没有用自相关函数，该方法可以对非高斯信号建模，抑制高斯有色观测噪声，为基于高阶累计量时序建模的机械故障诊断提供了新的的理论工具。

Golay sequences have lots of applications, e.g. as codewords for OFDM signals to limit the PAPR to 2. It's also a very interesting subject to find how many Golay sequences exist and their structure.

中文摘要由於格雷互补对的非周期性自相关函数和为脉冲的特性，因此格雷序列有很多的应用，像是应用在OFDM编码时可将PAPR限制在2之内。

By employing normal probability plot,R/S analysisand autocorrelation function analysis,we find,with the high frequency data,the return of domestic financial market described by Shanghai index andShenzhen composite index presents the stylized facts,such as fat-tailed distribution,clustering and dependence,which infer that our market can not be regarded as efficientmarket.

利用正态概率作图、R/S分析和自相关函数分析等方法，我们发现在高频数据下（时间长度为15分钟），以上证指数和深成指数为代表的我国金融市场呈现出收益率的&肥尾&、&集聚&和相关性等格式化特征，这说明我国金融市场不能被看成是有效市场。

With the help of these conditions, computer efficiently searches out many quasi-perfect and double quasi-perfect punctured binary array pairs. The relationships among perfect punctured binary array pair, quasi-perfect and double quasi-perfect punctured binary array pair is presented. Specially, when first and second dimension period of the punctured binary ar

定义了非周期屏蔽二元序列偶的自相关函数、屏蔽二元互补序列偶和最佳屏蔽二元互补序列偶，给出并证明了屏蔽二元互补序列偶的变换性质；和它存在的组合允许条件，用计算机搜索出若干最佳屏蔽二元互补序列偶；给出了屏蔽二元互补序列构造出新的屏蔽二元互补序列偶的四种构造方法；并且，给出了利用不同长度的二元互补序列和屏蔽二元互补序列偶构造出新的屏蔽二元互补序列偶的四种构造方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。