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用振幅为0.8的方波进行傅里叶分析，并求当K不同值时的合成信号。(By amplitude of 0.8 square wave to Fourier analysis, and pray for different value when K synthetic signal. )

说明：  三歩搜索法，是运动估计中块匹配方法的一种简便搜索方式 (Three-step search method, block matching motion estimation is a convenient way to search method)

A program for computing the fast forier transformation (FFT).

Implement the following as inlines.

this is a matlab program modulate to a wireless or wire line chanel

Shell sort is a very interesting modification of the sorting algorithm simple inserts.

计算并绘制金属材料热模拟实验加工图及失稳区域(Calculated and plotted metal thermal simulation processing maps and regional instabil)

说明：  蚁群算法的另一种实现形式，通过全局的搜索，避免陷入局部解的改进程序(Another ant colony algorithm to achieve the form of global search through, to avoid falling into local solutions to improve procedures)

QPSK信号在加入白高斯噪声（AWGN）后，用matlab进行仿真，并绘制了误码率图形。( The QPSK signal after joining the white gaussian noise (AWGN), carries on the simulation with matlab, and has drawn up the error rate graph. )

一种利用光流法检测运动物体的程序，供初学者参考。(Optical flow method by means of a moving object detection procedures for advanced users.)