mySPWM

混沌优化算法计算测试函数的matlab程序，自己写的，可以直接用。(Chaos optimization)

说明：  用小波多尺度分析进行基于医学图像形状特征的检索.(wavelet multiscale analysis based medical image retrieval features of the shape.)

一个matlab绘图课件，比较详尽，希望对用matlab绘图的同学有帮助！(A matlab graphics courseware, more detailed, and they hope to use matlab graphics help students!)

说明：  扩展卡尔曼滤波与粒子滤波滤波性能比较的源程序(Extended Kalman filter and particle filter source)

As we know, the energy needed for sensors should be electrical. So the rst step before start to work is to convert environmental energy to electrical one. Inside the node there are dierent components for sensing the area, collecting data and processing the data. So the main dierent part of this kind of nodes, in compare of WSN nodes, is the power part. Once the stored energy reach to a certain amount, the power supply for micro controller and transceiver will start to work. They will continue to work until they have energy, as soon as the energy nish, they stops and energy storage device start to work to save energy again. The other fact should be consider about EH-WSN node is that the available energy can change in dierent nodes. So every node has its own harvesting rate.

两个频率的凹口滤波对消干扰噪声，效果很好。希望大家仿真实验。(Two frequency notch filter to eliminate interference noise, the effect is very good. I hope everyone simulation experiments.)

additif noise gaussien (awgn) model

This is the project is image compression based dwt algorithm

说明：  面波数值模拟，交错网格法高阶有限差分数值模拟算法(Surface wave numerical simulation)

removal of salt and pepper noise in image using median filter