chaos

傅立叶变换能将满足一定条件的某个函数表示成三角函数（正弦和/或余弦函数）或者它们的积分的线性组合。(Fourier transform can meet certain conditions expressed as a function trigonometric (sine and/or cosine functions) or their integral linear combinations.)

Artificial neuarl network is one of the recent developed softcomputing technique work on the basis of human neural system. The traning and testing are the two important process in artificial neural network. ther are many techniques used for the training of artificial neural network, however backpropagation algorithm is the traditional method for training purpose. this document contain the mathematical formation of artificial neural network with backpropagation training.

matlab部分数据挖掘算法实现，现在数据挖掘已被人们熟知，matlab对算法有着重要的作用(matlab part of the data mining algorithms, data mining has now been known, matlab has an important role in the algorithm)

一个非常基础的求最大值的程序，适合初学者。(Maximum demand in a very basic program for beginners.)

kalman filter program(Kalman filter program)

基于EKF的机器人SLAM演示程序, 对于搞机器人定位及地图构建的朋友会有一定帮助, 这个版本用的人比较多(EKF-based SLAM demo of the robot, the robot carry out positioning and mapping will have a certain friend to help, this version used by many people)

Single phase inverter in simulink

code for calculating the Lorenz attractor

pi/4-dqpsk 调制解调 的 matlab 仿真，通过srrc滤波器实现16倍的上采样(pi/4-dqpsk modulation and demodulation matlab simulation, through srrc filter to achieve 16 times the sampling)

加权最小二乘法.用matlab实现加权最小二乘法，采用封装函数的形式编写，易于使用。(Weighted least squares method. Using matlab realize the weighted least squares method, in the form of wrapper function written, easy to use.)