方阵列

The Von Mises angular function is used to describe the angular correlation for the distributed source and derive a novel distributed source model from the quantitative angular correlation.

利用阵列接收信号协方差阵的特征值分析了源内角度相关程度对有效信号子空间的影响。

In this paper, by using the special structure of the covariance matrix, a fast high resolution method based on QR decomposition is presented.

利用阵列输出协方差矩阵的特殊结构，本文提出一种基于QR分解的高分辨谱估计方法及其改进形式。

The proposed beamformer represents a modification of the popular minimum variance distortionless response beamformer. It minimizes the array output power while maintaining the distortionless response in the direction of the desired signal and a sidelobe level that is strictly guaranteed to be lower than some given threshold value.

它是通常的最小方差无畸变波束形成算法的改进形式，使阵列输出信号功率最小的同时，保持目标信号方向的无失真响应，并且严格保证旁瓣低于某一给定值，抑制干扰。

A semi-blind MVDR (minimum variance distortionless response) beams forming method belongs to the array signal processing field of a beam former receiving wireless signals.

半盲的最小方差无失真响应波束形成方法属接收无线传播信号的波束器阵列信号处理范畴。

By using hexagonal mesostructured template, metal Cu nanowires with diameter of 7 nm were derived and by using body-centered mesostructured template, Cu nanoparticles with dumbbell-like morphology were obtained.

以六方孔道结构的介孔氧化硅模板获得了直径为 7nm的金属铜纳米线阵列；以笼状体心立方孔道结构的模板获得了具有哑铃状形貌的铜单质纳米颗粒。

By using hexagonal mesostructured template, metal Cu nanowires with diameter of 7nm were derived and by using body-centered mesostructured template, Cu nanoparticles with dumbbell-like morphology were obtained.

以六方孔道结构的介孔氧化硅模板获得了直径为7nm的金属铜纳米线阵列；以笼状体心立方孔道结构的范本获得了具有哑铃状形貌的铜单质纳米颗粒。

The linearly constrained minimum variance algorithm based on the power inversion array and its iterative formula are deduced in the paper, which avoids the complexities of matrix inversion.

详细推导了基于功率倒置阵列的线性约束最小方差算法及其递推公式，避免了矩阵求逆的复杂运算。

Adopting the system of HPLC-DAD, the analysis method of Prunella vulgaris was formed and th...e favourable proof result was obtained.

采用高效液相色谱-二极管阵列检测系统，发展了一种夏枯草的HPLC-DAD分析方法，并得到了良好的方法学论证结果。

Nevertheless, in many practical applications such as in low sample support or when the signal statistics are rapidly time-varying, we may not have enough sample to form the sample covariance matrix.

然而，常规的子空间估计方法由于涉及到阵列协方差矩阵的估计及其特征值分解，从而需要较高的计算复杂度。

In the case where the sample covariance matrix is given, we perform the spatially smoothed Lanczos algorithm to fast compute the basis vectors for the signal subspace and the noise subspace.

如果阵列协方差矩阵是已知的，我们采用空间平滑的Lanczos算法快速估计信号子空间和噪声子空间。

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。