doa_example

说明：  矩形波函数，计算其频谱，幅度谱和相位谱，与理论值比较。(Rectangular wave function to calculate the frequency spectrum, amplitude spectrum and phase spectrum, compared with the theoretical value.)

used to calculate energy efficiency in wireless sensor nodes

自编的非线性牛顿算法，经IEEE14、30、39节点系统验证，是正确的(Nonlinear Newton algorithm includes the IEEE14 node system verification, 30, 39, is correct)

聚类分析的案例，用maltab方法实现，修改可以使用(Cluster analysis of cases with maltab method, can be used to modify)

该程序实现了压缩感知理论中采用矩阵的优化。在压缩感知理论中，要求采样矩阵与稀疏矩阵的相关性越低越好。该代码采用一种交替投影的方法实现采用矩阵的优化，有效降低其相关性。(The program to achieve the optimization of the use of matrix theory compressed sensing. Requirements of the sample matrix and sparse matrix theory of compressed sensing, the lower the better. The code uses an alternating projection method to achieve the optimization of the use of matrix to effectively reduce the correlation.)

图像分割的matlab代码，运行效果很好的。(Image segmentation matlab code, run very good.)

说明：  一种采用LMS算法来求出滤波因子和输出函数函数。(A function which can calculate the filer impulse response and output signal base on LMS algorithm.)

calculate the clutter signal in radar application

计算信号的双谱，为机械故障诊断提供依据，还可以用于故障特征提取(Bispectrum for calculating signals)

IMPMET Standard impedance matrix (metal surface) Returns the complex impedance matrix [EdgesTotal x EdgesTotal] Uses 9 integration points for every triangle (barycentric subdivision) The impedance matrix is calculated as a sum of the contributions due to separate triangles (similar to the "face-pair" method).