QPSKdigitalreceiver

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.)

kalman滤波 用于电池SOC上的算法(kalman filter algorithm for battery SOC on)

计算机图形学生成基本曲线、圆、直线方面的程序，仅供参考(jisuanji tuxingxue shengcheng jibenquxian fangmian de cheng xu jingong cankao)

几种基于小波变换的图像边缘提取程序，该程序中有对几种边缘提取程序进行比较，对于初学者或者小波变换编程刚入门的同学比较有帮助(Several wavelet-based image edge detection program that has several kinds of edge extraction procedures were compared, for beginners or transform just started programming more helpful to students)

MATLAB An Introduction with Applications, 4th Edition EBook helps to Know about MATLAB and its apllications.

this code about mashin learning

6节点、9节点、14节点、26节点、30节点、57节点系统潮流计算(ieee 6, 9, 14, 26, 30, 57 power flow anaysis)

This code is about plotseismic.

选择一种编码方式。在这里可以采用行编码和列编码，但经过大量的实验表明，这两种编码方式的抗干扰性能不佳(choose a coding. The trip here can be used coding and coding out, but after a lot of experiments showed that both the encoding anti-jamming performance poor)

说明：  有关图像去噪和调节对比度……………………………………………………(about graghic processin .basic ………………………………………………)