matlab_vlfeat

不错的GM_EM代码。用于聚类分析等方面。( GM_EM- fit a Gaussian mixture model to N points located in n-dimensional space. Note: This function requires the Statistical Toolbox and, if you wish to plot (for k = 2), the function error_ellipse Elementary usage: GM_EM(X,k)- fit a GMM to X, where X is N x n and k is the number of clusters. Algorithm follows steps outlined in Bishop (2009) Pattern Recognition and Machine Learning , Chapter 9. Additional inputs: bn_noise- allow for uniform background noise term ( T or F , default T ). If T , relevant classification uses the (k+1)th cluster reps- number of repetitions with different initial conditions (default = 10). Note: only the best fit (in a likelihood sense) is returned. max_iters- maximum iteration number for EM algorithm (default = 100) tol- tolerance value (default = 0.01) Outputs idx- classification/labelling of data in X mu- GM centres)

二维的TM波打到一个方形的金属柱上，边界条件为PML(TM wave hit a two-dimensional square metal column, PML boundary conditions)

multi device antenna in matlab

PF 粒子滤波源代码 非常适合初学者的学习(Particle Filter code matlab)

在数字信号的基带传输过程中，信息传输速率在满足香农公式的条件下还极大地受到码间干扰的限制(It is also limited by intersymbol interference when transmission speed of code accord with Shannon expressions in the course of baseband transmission of digital signal.)

关于信号处理的新算法，可以用于谐波简谐波检测等(New signal processing algorithms can be used for harmonic simple harmonic detection)

可以把一段脑电信号分解成多个频段，然后各频段重构就可以提取脑电信号的各频段成份了(Period of EEG can be broken down into multiple bands, each band then refactoring can extract EEG bands ingredients)

用互相关法实现时延差估计，时延差是使用TDOA算法实现定位的关键步骤！！！(use cross correlation function to estimate the time delay，time difference is a very important parameter when using the TDOA algorithm to positioning！)

转速、磁链闭环控制的矢量控制交流调速。控制电路是由滞环脉冲发生器、电流变换与磁链观测的封装模块、比例放大器模块、函数模块、常数模块（用于额定转速和转子磁链信号的给定）、转速调节器ASR、转矩调节器ATR、磁链调节器APR、以及三二变换器模块。(Vector Control AC Speed Regulation with Closed Loop Control of Speed and Flux Link)

GVF snake用matlab实现，可用于图像边缘检测和分割(GVF snake with matlab realize, can be used for image edge detection and segmentation)