wavelet

its code to reduce papr

并网锁相：用积分法实现90滞后的单相光伏并网锁相环(Grid lock-in: 90 integral method to achieve lag phase photovoltaic grid-locked loop single)

基于Matlab的一维图像熵和二维图像熵的计算。(Based on Matlab is one dimensional image entropy and two-dimensional image entropy calculation)

说明：  本Matlab代码提供了地理坐标丰富的转换功能：涵盖了经纬度坐标转东北天坐标；经纬度坐标转地心直角坐标；地心直角坐标转东北天；地心直角坐标转经纬度的功能；(This Matlab code provides a rich conversion function of geographic coordinates: covering latitude and longitude coordinates to northeast celestial coordinates; latitude and longitude coordinates to geocentric orthogonal coordinates; geocentric rectangular coordinates to northeast heaven; geocentric rectangular coordinates to latitude and longitude;)

可对.txt文本进行霍夫曼编码，并计算其压缩率(Can. Txt text Huffman code, and calculate the compression ratio)

计算最小生成树，求解最短距离问题,matlab程序代码（注：不是只是两点之间最短路径，不是遍历问题）。(solve the problem of the shortest path.)

matlab伺服仿真 simulink 伺服模型山东省地方(Servo Servo matlab simulink simulation model of Shandong Province)

说明：  用于结构在动力荷载作用下的时程分析,地震荷载，随即荷载均可，采用newmark方法。(time-domain analysis of a linear strucutre under dynamnic loads。 Newmark method is used.)

基于铌酸锂光波导中飞秒光参量放大过程中的脉宽变化及各光波的传播三维图matlab源代码(Based on lithium niobate waveguide femtosecond optical parametric amplification process changes and the light pulse propagation three-dimensional map matlab source code)

The sourcecode of Universally-Convergent Squared-Operator Iteration Methods for fig3 using SOM