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Differential Evolution (matlab)(Differential Evolution (Matlab))

说明：  对于已定义的包含从0到15的整数的列向量xsym，就可以利用modem.qammod对象的modulate方法来调制它。其中M值为16，亦即为码字表的大小。 对已调制信号可采用awgn函数添加加性高斯噪声。其中比特能量与噪声功率谱密度的比值，Eb/N0，设置为10dB。 (The method comprising modulate integer from column vectors xsym 0 through 15, can use the defined object modem.qammod modulating it. Wherein M is 16, i.e., a codeword size of the table. Modulated signal can be used for awgn function to add the additive Gaussian noise. Wherein the ratio of bit energy to noise power spectral density, Eb/N0, is set to 10dB.)

目的：SAR雷达在斜视角etha下，雷达回波信号仿真 目标位置 X1(0.75PRT*C/2,Ta*V),X2(0.75PRT*C/2,2.3Ta*V) 修改时间：2013年9月21日 11:30

FDTD算法模拟二维TM波的传输问题，代码很简洁美观，试用于初学者(Transmission problems FDTD method simulation of 2D TM waves, the code is very simple and beautiful, the trial for beginners)

input file of ode 45

IEEE致力于电气、电子、计算机工程和与科学有关的领域的开发和研究，该程序为IEEE30节点潮流计算,电压初值计算，(IEEE is committed to electrical, electronics, computer engineering and science-related fields of development and research, the program flow calculation for the IEEE30 bus voltage initial calculations,)

matlab codes for solving ODEs, including euler method, RK methods etc, and some examples.

Designing a high pass filter using matlab.

说明：  线性调频信号的短时傅立叶变换，采用短时傅立叶变换得到线性调频信号的时频分析(linear FM signal short-time Fourier transform, using short-time Fourier transform linear FM signals in the time-frequency analysis)

数字信号调制动态演示系统，包含AM,PM,FM等多种演示，运行界面操作简单。(welcome to downloads this code !thank you!)