查询词典 mutual correlation

The mutual coherence and angular correlation function of scattered wave from two dimensional non-Gaussian rough surfaces is deduced using the Gram-Charlie distribution, then the pulse scattering from two dimensional rough sea surface is calculated, and pulse broadeding is discussed.

基于Gram-Charlie分布函数并利用三阶统计特性推导出了非Gaussian二维粗糙面的双频互相关和角相关函数的计算公式，并以二维海面为例计算了其对几种典型波形脉冲的散射，讨论了脉冲展宽效应。

The samples of the study are the bond mutual funds in Taiwan ranging from September 2000 to May 2004. First, we use student's t test to compare the difference of the rate of return in different business cycle period. Then, Spearman's coefficient of rank correlation is involved to test the performance persistence.

本研究以民国89年9月至93年5月国内债券型基金为研究对象，先利用t检定比较不同景气循环期下之债券型基金报酬率是否有差异，接著利用Spearman等级相关系数分析在不同景气循环期下，债券型基金之基金绩效是否具有持续性，最后以多元回归模型检视各不同时期下，影响基金报酬之因素。

The obtained results suggest that for weakly correlated random variables such as two instances of a self-similar process with a long time lag, half the square of the correlation coefficients might be a reasonable approximation to the mutual information.

本研究的结果建议，对於弱相关的随机变数，如一个自我类化过程中具有长的时间差的不同二个时刻的值，相关系数的平方值的一半似可作为交互讯息的一个合理的近似。

In this paper, we study the relationship between average mutual communication and general correlation coefficient in information theory.

本文探讨了信息论中平均互信息和广义相关系数的关系。

It shows that the increase in average mutual communication does not mean the increase in general correlation coefficient.

研究表明平均互信息的增加不意味着广义相关系数也增加。

CCRGS method is the most robust; correlation ratio is more robust than mutual information.

除此之外，还对CCRGS方法和互信息方法、相关比率方法进行了比较。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

Then the correlation between translation teaching and the discipline construction is analyzed from two perspectives: one is to investigate the diachronic interactive relationship between the two—a relation of mutual influence and promotion; the other is to investigate the two by using the theory of systematology—a relation of inclusion: translation teaching is one of the subsystems of the discipline construction, and lies in the core position of the latter, the reasons for which the paper expounds and clarifies.

然后就翻译教学和翻译学学科建设的关系从两个方面进行解析，一是从二者的历时性互动关系看，二者是相互促进，相互影响的；二是从系统论角度考察，可以看出翻译教学是学科建设的一个子系统，并处于后者的一个核心位置，对此，论文进行了论证和说明。

The first and second significant wavelengths, analyzed by the information entropy index, are 650 nm and 690 nm, which are mutual different to the linear correlation analysis between nitrogen content and spectral data.

利用有效资讯熵指标分析植株氮含量之特徵波长后，其第一和第二特徵波长分别为650 nm和690 nm，与氮含量与光谱值相关性分析结果互异。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。