DCT2D

说明：  利用matlab仿真软件 对PWM进行仿真 有波形(Matlab simulation software used to simulate a PWM waveform)

说明：  可以实现一幅图像中彩色边缘的提取，实在matlab的条件下，有多种算子(Can achieve a color image edge extraction, it is matlab conditions, a variety of operator)

It is much easier to spot patterns in your data when you can associate an image with each datapoint. thumbnailScatter.m overlays an image thumbnail over each datapoint to help with visualization. For example, if you perform a principal components analysis and would like to plot PC1 vs PC2, use thumbnailScatter.m to see what properties each PC controls. Run demo_scatterThumbnail.m to see how it works. Test data are provided for the demo.

ICA独立成分分析对信号进行特征提取，盲源分析保留有用信号通道(ICA independent component analysis for signal feature extraction and blind source analysis to preserve the desired signal channel)

BPSK调制，1/2码率卷积码实现软解调(BPSK modulation, 1/2 rate Convolutional Codes soft demodulation)

计算序列的DFT，并画出其幅度和频谱曲线(Computing the DFT of the sequence, and draw the magnitude and spectrum curve)

LMS算法的MATLAB实现函数, 输入参数: xn 输入的信号序列 (列向量) dn 所期望的响应序列 (列向量) M 滤波器的阶数 (标量) mu 收敛因子(步长) (标量) 要求大于0,小于xn的相关矩阵最大特征值的倒数 itr 迭代次数 (标量)(LMS algorithm MATLAB realization function)

简单的萤火虫算法，算法收敛性较强，搜索全局最优能力强。(Simple firefly algorithm)

NOAA网站AVHRR卫星数据绘图（SST）。数据选用原因:它本身是已经被处理过的27年（1982-2008）全球月平均数据，而且数据精度非常高，对于研究全球SST的气候态特征有较好的说服性；另外，选择2月与8月的数据，对描述海洋水温的平面分布更具有代表性。 (NOAA AVHRR satellite data mapping site (SST). Data Selection reasons: it is itself already been treated for 27 years (1982-2008) global average monthly data, and the data accuracy is very high, for the study of global climate SST state characteristics have better persuasive addition, February with the data in August, and the description of ocean water temperature plane distribution more representative.)

修改版的matlab画K线的程序，实现了涨为红色，跌为绿色(Modified version of the matlab draw K-line procedures, the rose is red, or green )