nihezhoutiao

该为matlab详尽学习资料，第七章“矩阵分析”(The details for the matlab learning materials, Chapter 7, " Matrix Analysis" )

matlab编程实现OQPSK调制解调波形及频谱、功率谱的绘图( 您是不是要找： matlab编程实现QPSK调制解调形及频谱、功率谱的绘图 matlab programming OQPSK modulation and demodulation waveform and spectrum, power spectrum drawing)

Useful for feature extraction in image processing

瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真(Rayleigh fading Rayleigh fading simulation simulation Simulation of Rayleigh fading Rayleigh fading simulation)

克里金法假定采样点之间的距离或方向可以反映可用于说明表面变化的空间相关性。克里金法工 具可将数学函数与指定数量的点或指定半径内的所有点进行拟合以确定每个位置的输出值。克里金法是一个多步过程；它包括数据的探索性统计分析、变异函数建模 和创建表面，还包括研究方差表面。当您了解数据中存在空间相关距离或方向偏差后，便会认为克里金法是最适合的方法。该方法通常用在土壤科学和地质中。(This function completes what I have started with the functions variogram and variogramfit. It is not intended to be a highly optimized code for performing kriging but may have educational value. Note that for using kriging, you should download the latest version of variogramfit. kriging uses ordinary kriging to interpolate a variable z measured at locations with the coordinates x and y at unsampled locations xi, yi. The function requires the variable vstruct that contains all necessary information on the variogram. vstruct is the forth output argument of the function variogramfit. This is a rudimentary, but easy to use function to perform an ordinary kriging interpolation. I call it rudimentary since it always includes ALL observations to estimate values at unsampled locations. This may not be necessary when sample locations are not within the autocorrelation range but would require something like a k nearest neighbor search algorithm or something similar. Thus, the alg)

Kohonen and CPANN toolbox是开发的一个MATLAB工具箱，用来对数据结构进行研究和分类。(The Kohonen and CPANN toolbox is a collection of MATLAB modules for developing Kohonen Maps and Counterpropagation Artificial Neural networs (CPANNs). These are well known neural networks aimed to the study of data structure (Kohonen Maps) and to the data classification (CPANNs). )

关于空间谱估计算法的一些性能比较，大家可以参考一下，看一看(On the spatial spectrum estimation performance comparison of the coding )

entering data nu=input( give poisson ratio: ) e=input( give mudule of elasticity: ) ro=input( give denstity of material,ro: ) beta=input( give Damping Factor Beta: )

说明：  电机控制仿真例子，用于永磁同步电机的spwm控制对初学者友好，欢迎下载参考，学习交流使用(Motor control simulation example, SPWM control for permanent magnet synchronous motor is friendly to beginners, welcome to download reference, learn to use AC)

矩形孔菲涅尔衍射图像得计算程序，读者可以修改相关参数，以观察不同形式得菲涅尔衍射图像。(Rectangular aperture Fresnel diffraction image obtained calculation program, readers can modify the relevant parameters to observe the different forms have Fresnel diffraction image.)