tdm_figure

局部放电试验所采集的信号中往往混有白噪声、周期干扰信号去除。此处采用常用db系列小波中的db6小波进行9尺度的多分辨分解后，根据白噪声能量特性，估算各尺度的阈值大小，采用硬值进行处理，后进行重构。(Partial discharge test of the signal collected is often mixed with white noise, periodic interference signal removal. Here the use of commonly used wavelet db Series DB6 wavelet carried out in the 9-scale multiresolution decomposition, based on the energy characteristics of white noise to estimate the scale threshold size, the use of hard-value deal, after the remodeling.)

说明：  用MATLAB实现的不合格品率P控制图的绘制，只要将数据导入data.txt文件，然后在MATLAB中运行main.m文件即可打开绘图界面。（注意：路径要设置好）(the failure rate of P Commodities Control Map, as long as the data into data.txt documents, then in MATLAB run main.m document can be open graphics interface. (Note : To set a good path))

扩频通信，从电磁波利用来看，与一般现有的常规通信方式完全不同。扩频通信利用伪随机编码把信息数据（窄带信号）的频谱进行扩展，形成宽带的低功率谱密度信号发射，使用不同的伪随机序列编码，不同通信用户可在同一频段、同一时间工作，互不影响或干扰极小地进行通信。(Spectrum, from the electromagnetic waves used term, and the general existing conventional means of communication is entirely different. Spread spectrum communication using pseudo-random code to the information data (narrowband signal) to extend the spectrum, the formation of low-power spectral density broadband signal transmission, using different pseudo-random sequence of coding, different communication users at the same frequency band, at the same time work, mutual does not affect or interfere with a very small way to communicate.)

LOW PSNR STEGNOGRAPHIC TECHNIQUE 2011

说明：  多目标DE算法，子程序有拥挤距离计算，非支配解排序，模型等，多学习多目标算法很有帮助(multi-objective DE algorithm)

函数逼近【matlab例程】经典算法直接应用方便快捷(Convenient function approximation [] classical algorithm matlab routines direct application)

这是一个适于初学者使用的matlab入门材料,韩盖了一些软件设计的基本方法与范例(This is an appropriate use of matlab beginners entry materials, South Korea to build a number of software design methods and examples of the basic)

我自己写的关于二维混合高斯分布的EM算法(I wrote about the distribution of two-dimensional Gaussian mixture EM algorithm)

瑞利衰落信道仿真，需要的朋友可以参考一下的。(Rayleigh fading channel simulation, the needs of friends can refer to it.)

说明：  基于Matlab编写的手写字符特征提取代码(Matlab-based feature extraction handwritten character written in the code)