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说明：  用MATLAB语言编写的基2 DIT FFT子程序& 用简单的速度很低的方法计算DFT(using MATLAB prepared by the two-DIT FFT routines)

介绍一种改进传统遗传算法的新方法，通过调节交叉概率和变异概率(Introduction of a new genetic algorithm to improve the traditional method, by adjusting the crossover probability and mutation probability)

用于大地高程拟合，对于大量数据局有较好拟合效果(Elevation fitting)

采用FSK调制方式，用于仿真高斯噪声、单音干扰等多种干扰环境下跳频系统性能及误码率(FSK modulation, frequency hopping system performance and bit error rate for the simulation of Gaussian noise, single tone jamming and other interference environment)

这是一个典型的流形学习的算法，算法为目前比较经典的一个，可以参考学习流形学习相关的东西(This is a typical manifold learning algorithm, the algorithm can refer to a more classic, the learning manifold learning things)

matlab book for bigenners very useful

利用matlab模擬IS95AReverseTransmitter的狀況(using Matlab simulation of the situation IS95AReverseTransmitter)

DCT变换1、 提取彩色图像，将图像大小限制为512*512*3； 2、 提取彩色图像三个颜色分量的矩阵，每个矩阵单独处理； 3、 将矩阵分为8*8的块，做DCT变换； 4、 提取每个块的一部分DCT系数做IDCT变换，显示基本图像； 5、 再提取每个块的一部分DCT系数做DCT反变换，得到增强层1，与前一次得到的数据叠加，得到质量更好的图像。 (DCT transform)

This simulation demonsrtates the control of a dc motor using a speed control and current control loops.Typical dynamic responses od the dc motor are also shown. The motor is initially at standstill and at no load when a step command in speed is applied when steady-state conditions are reached, a reversal of speed is commanded followed by a step load application.

已知两个序列x[n]=cos(n*pi/2), y[n]=ej*pi*n/4x[n],绘制X(ejw)和Y(ejw)和幅度和相角,说明它们的频移关系(The known two sequence x [n] = cos (n* PI/2), y [n] = ej* PI* n/4 x [n], draw x (ejw) and y (ejw) and amplitude and phase Angle, suggesting their frequency shift relationship )