matlab_plotting_examples

给出两个chirp信号相加后，由瞬时频率定义求出的瞬时频率曲线，说明瞬时频率的不确切性；(The sum of two chirp signals are given, after the definition of instantaneous frequency derived from the instantaneous frequency curve, indicating lack of precision in the instantaneous frequency )

QPSK的调制解调系统的实现，程序详细给出了调制解调各个部分的方法。自己在matlab上实现过，都出来了(QPSK modulation and demodulation system implementation, the program details the various parts of the modulation and demodulation method. Their implementation in matlab too, are out)

PSO算法的系统辨识，辨识一个锅炉蒸汽水位的传递函数。依据现有的数据，将传递函数辨识为2阶。(PSO algorithm to identify a boiler steam water level transfer function. Based on the existing data, the transfer function is identified as order 2.)

利用matlab来模拟线光栅，虽然代码看似简单，其实要模拟好这一过程并不容易，分享下本人的方案，效果还不错，有图说明(Using matlab to simulate the line grating, although the code looks simple, but good to simulate this process is not easy to share, under my program, the results were good, there are map shows)

可以实现直角坐标系下的牛顿拉夫逊算法，适合于潮流计算(Cartesian coordinate system can achieve the Newton Raphson method, suitable for power flow calculation)

用于qq聊天框汉字表情输入，第一个参数是汉字或字母数字，第二个参数是qq表情快捷键，第三个参数是空格数(QQ information)

本程序为EMD分解程序，包含子程序，可直接运行(EMD decomposition process)

双级矩阵变换器的MATLAB的仿真实现，完整的验证了双级矩阵变换器的基本原理。(Two-stage Matrix Converter Simulation of MATLAB-)

Specific color setting for Pie3 MatLab function

通过强大和安全的形象散列 非负矩阵因式分解，在信息取证与安全，376-390，2007年IEEE交易。NMF-NMF-SQ哈希( V. Monga, and M. K. Mihcak, Robust and secure image hashing via non-negative matrix factorizations, IEEE Transactions on Information Forensics and Security, 2(3), 376-390, 2007. NMF-NMF-SQ Hashing)