51CT

说明：  平面波展开法 2D Phononic Cystals eigvalue 正方格子(Plane wave expansion method 2D Phononic Cystals eigvalue)

两阶段DEA模型的matlab程序源码，可以用来计算效率，完全傻瓜式操作。(Two-stage DEA model matlab program source code, can be used to calculate the efficiency, completely fool-type operation.)

针对基本无线传感器网络DV-Hop定位算法中，计算平均跳距时产生偏小误差的原因，提出了基于平均跳距修正的DV-Hop算法。改进算法中，引入信标节点个数比例、所有信标节点平均跳距的最大值以及所有信标节点平均跳距的平均值三个因子，并采用它们对平均跳距进行修正。通过Matlab软件对算法进行仿真验证，结果表明，改进后的 DV-Hop 算法有效降低了未知节点的定位误差，是一种可行的无线传感器网络节点定位解决方案。(DV-Hop localization algorithm for wireless sensor networks, we calculate the average hop distance small error of reasons, raised the DV-Hop algorithm based on the average hop distance correction. Improved algorithm, the proportion of the number of nodes, the introduction of beacons, the beacon node average maximum jump distance as well as all the beacon nodes average jump from the average of three factors, and their average hop distance correction. Matlab software simulation results show that the improved DV-Hop algorithm effectively reduce the unknown node positioning error, the solution is a viable wireless sensor network node positioning algorithm.)

Estimating VAR(p) processes_Matlab code

盲自适应多用户检测---LMS算法、RLS算法；其中产生m序列、gold序列(Blind Adaptive Multiuser Detection--- LMS algorithm, RLS algorithm which generates m sequences, gold sequences)

利用神经网络进行语言特征的识别，很有用的代码，希望对大家有用(Neural network is used to identify the characteristics of language, is very useful code, hope useful for everyone)

专家PID控制的matlab例程，主要包括开环，PI控制等方式(Expert matlab control of the PID routines, including open loop, PI control, etc.)

说明：  利用低通滤波器进行横条纹滤除，效果可以，最好进行一下后期处理，效果会更好。(Use of horizontal stripes of low pass filter filter, the effect can be desirable to look at post-processing, the effect will be better.)

对图像进行预处理，然后进行经典的阈值分割，形态学分割以及种子区域生长。(Preprocess the image, and then the classic threshold segmentation, morphological segmentation as well as seed region growing.)

小波包分解Welch平均法在焊接电弧声功率谱估计中的应用(Application of wavelet packet Welch method in the welding arc sound power spectrum estimation)