1) source coherency structure
信源相干结构
1.
An effective method to estimate the source coherency structure for uniform circular array is presented in this paper.
提出了一种估计均匀圆阵信源相干结构的方法，该方法首先利用空间预处理技术将阵元空间内的均匀圆阵变换成模式空间内的均匀线阵，然后在模式空间内对该均匀线阵进行平滑处理，形成平滑子阵序列，获得平滑秩图。
2) coherent sources
相干信源
1.
Unsymmetrical weighted spatial smoothing difference algorithm for DOA estimation of coherent sources;
相干信源DOA估计的非对称加权空间平滑差分算法
2.
A new algorithm is proposed for direction of arrival(DOA) estimation of coherent sources in the presence of colored noise,which is called spatial smoothing difference method.
针对色噪声背景下的相干信源波达方向估计问题,提出了一种空间平滑差分算法。
3.
A new algorithm is proposed for direction of arrival (DOA) estimation of coherent sources in the presence of colored noise fields,which is called “Spatial Difference Smoothing (SDS)” method.
文中提出了一种色噪声背景下相干信源波达方向(DOA)估计的新算法-空间差分平滑(SDS)算法。
3) Coherent signals
相干信源
1.
DOA estimation algorithm for coherent signals based on diagonal loading in presence of correlated noises
相关噪声下基于对角加载的相干信源DOA估计算法
2.
In real array antenna systems,mutual coupling between elements and the existence of coherent signals can significantly degrade the performance of most of the high resolution algorithms.
在实际的阵列中,阵元间的互耦和相干信源的存在都会使得大多数高分辨的DOA估计算法的性能严重下降,甚至完全失效。
3.
The DOA(Direction-Of-Arrival) estimation of coherent signals is a research hot spot of array signal processing, which is widely used in radar, communication and sonar etc.
相干信源DOA估计是阵列信号处理的一个研究热点,在雷达、通信、声呐等领域有着广泛的应用前景。
4) coherent source
相干信源
1.
New method of 2-D direction-of-arrival estimation in coherent source environment with special array;
基于特殊阵列的相干信源二维测向新方法
2.
Study on new method of 2-D direction-of-arrival estimation of coherent source;
二维相干信源测向新方法研究
5) coherent structure
相干结构
1.
Formation of initial stage NO_x in the coherent structure vortex;
相干结构涡中NO_x的初生形态
2.
Wall model in LES based on coherent structures;
基于相干结构的大涡模拟壁面模型
3.
Experimental study on coherent structures in wall turbulence interacting with a circular cylinder wake;
圆柱绕流尾迹对壁湍流相干结构影响的实验研究
6) Coherent structures
相干结构
1.
The problem of how the coherent structures in the wall region of a turbulent boundary layer could be excited by the disturbances from the outer region was investigated by using direct numerical simulation (DNS) method.
应用直接数值模拟的方法,研究了湍流边界层近壁区由于外区扰动的作用而导致相干结构产生的问题· 结果表明:在湍流边界层近壁区的上边界存在的速度扰动,可以在近壁区内激发出相干结构,从而完善了单个相干结构的理论模型·
2.
Based on the wavelet packet method, a dual decomposition algorithm for extracting coherent structures from turbulent wake flows after blunt bodies is presented.
根据湍流相干结构和非相干结构不相关的特性,提出了一种钝体尾流双重小波包分解的新算法,将湍流的运动分解成相干分量和非相干分量。
3.
The evolution of coherent structures in the wall region of a turbulent boundary layer under adverse pressure gradients was studied by using DNS method.
采用Fourier谱展开和紧致有限差分格式 ,选用两组共振三波为相干结构的初值 ,计算了其在零压和逆压梯度作用下的演化。
补充资料：相干散射和非相干散射
再辐射的光量子频率和被吸收的光量子频率准确相等的散射过程称为相干散射。在相干散射的情况下，源函数准确地等于平均辐射强度。再辐射的光量子频率和被吸收的光量子频率不相等的散射过程称为非相干散射。在天体物理中，存在一系列因素使散射过程成为非相干散射。主要的因素是：原子的能级有一定的宽度、原子的热运动和湍动以及压力效应等。对于非相干散射，源函数是相当复杂的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条