自相关函数

The concept of statistical property transformation is discussed according to the situation in which channel input is stationary and non-identically independent distribution with a priori known autocorrelation function.

在此基础上针对输入信号为平稳非独立同分布且有已知自相关函数的情况，引入统计特性变换，导出了变换阵的闭式解。

Then the effect of different target extraction algorithms on grating lobes was discussed in detail, a modified method based on 'abnegation method' was developed, which can achieve the optimal result in case of high sampling , simulation results prove that it is feasible.

对舍弃法进行了改进，改进后的舍弃法对自相关函数栅瓣较小的线性调频步进信号在采样率足够高的情况下，可以达到最优的处理结果，仿真结果证明了理论分析的正确性。

However, the FFT-based methods are not fit for signals with short data record; in addition, the frequency resolution of these methods is limited by FFT size.

时-频分布表达式中信号的局部自相关函数是时-频分布得以用FFT快速实现的基础。

This paper obtained a new method for proving the autocorrelation function of ARFIMA model in time domain.

本文的主要工作是 1、给出了ARFIMA模型自相关函数的一种新的时域推证方法。

Because of the multimodality of its autocorrelation function, it makes acquisition and tracking more challenging.

由于其自相关函数的多峰性，将增加这种信号的捕获难度和误跟踪的可能性。

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。

We set a relatively long integral time in the calculation of heat current autocorrelation function, and got convergent results.

计算了较长时间的热流自相关函数，并得到了导热系数的收敛结果。

The autocorrelation function is an even function .

自相关函数是一个偶函数。

The model can be used to deal with the problems that are beyond the autocorrelation function and to mine the cryptic and deep information.

采用该模型可以解决利用自相关函数判断序列周期性所不能解决的问题，可进一步挖掘数据隐含的、深层次信息。

Based on the characteristic of multi-resolution analysis of wavelet transform, pitch detection algorithm with the combination of wavelet transform and weighted autocorrelation function is proposed here.

3基于小波变换的多分辨率分析特性，提出了小波变换与加权自相关函数相结合的基音检测算法。

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。