Engineering_Matlab_Programming

说明：  伪随机码或称PN码，是扩频通信中不可缺少的一种序列。扩频通信，简单的说来就是通过一组相关性很强的伪随机序列，使原有的信号按照伪随机序列的特性出现。从波形上看，原有信号完全淹没于随机的噪声中，达到隐藏信号和抗干扰的目的。接受方只要有相同的伪随机序列，就可以通过伪随机序列很强的相关性将信号还原出来。而m序列，是扩频系统中最长用的伪随机序列。下面的代码就是基于matlab的生成m序列的代码，通过改变初始多项式的值，就可以生成不同阶数的m序列。(Pseudo-random code or PN code, spread spectrum communication is indispensable to a sequence. Spread spectrum communication, a simple to say that the adoption of a group of highly related to pseudo-random sequence, so that the original signal in accordance with the characteristics of pseudo-random sequence there. From the wave point of view, the original signal completely submerged in the random noise to hide the purpose of signal and interference. As long as the recipient has the same pseudo-random sequence, the pseudo-random sequence can be a strong correlation to restore the signal out. And m sequence spread spectrum system is the longest of the pseudo-random sequence used. The following code is generated based on m sequences of matlab code, by changing the value of the initial polynomial, we can generate a different order of the m sequence.)

说明：  数理统计中各种参数估计与假设检验源代码，文件中有例程(A variety of mathematical statistics, parameter estimation and hypothesis testing of the source code)

很好的小波应用实例文档，介总结内容有小波用于去噪、图像压缩、边界扭曲、图像融合、小波包的分解和重构等等，附详细的MAMTLAB代码(Application of wavelet good document, refer to summarize the contents of wavelet denoising, image compression, border distortions, image fusion, wavelet packet decomposition and reconstruction, etc., with detailed MAMTLAB code)

this matlab code describes FFT calculation

自相关函数和互相关函数的matlab计算和作图(The autocorrelation function and one of the matlab calculation and mapping function)

MWC sub nyquist sampling Compressive sensing

是国外著名专家mahafza的书的代码，主要用于雷达设计和优化(Is a famous expert mahafza book code, mainly for radar design and optimization)

用不同的函数求得阈值进行消噪，希望对大家有用(The threshold denoising obtained with the different functions the hope that useful)

Matlab录音程序，可以供学习参考用，欢迎改进。(Matlab recording program, you can reference for the study, welcomed the improvement.)

求解输入矩阵的阶梯形式，仅供大家学习交流(Input matrix form for solving the ladder, only for them to learn from the exchange)