Backpack-Genetic-Algorithm-Beta-Version

This mfile illustrates a simple two path Rayleigh multipath fading channel This mfile inputs an unmodulated sinewave through a simple Rayleigh two path fading channel and shows the output with phase, gain, and attenuation characteristics via animation (This illustrates a simple two path Ra yleigh multipath fading channel proficient This mfile uts an unmodulated sinewave through a simple Ra yleigh two path fading channel and shows the out put with phase, gain, and attenuation characteristics via animatio n)

实现地震叠前三参数反演（纵波速度、横波速度、密度）(prestack seismic inversion (compressional wave velocity, shear wave velocity, density))

荷兰乌德勒支大学Yuri A. Kuznetsov教授团队开发的基于matlab的非线性动力学系统滑动分岔现象延拓程序(sliding bifurcations by Yuri A. Kuznetsov)

RS码编译码程序,已经调试过的，可以直接使用，啦啦啦啦啦啦啦啦啦啦啦(decode of RS)

1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。 a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化， 而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使 得阻带衰减减小，但能够减小过渡带。 b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽 度变化、主瓣副瓣比值变化情况。 2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI, 阻带衰减不小于 40dB,通带衰减不大于 3dB. a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否 满足要求，二者有什么不同。 b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型 (hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变 化。 3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。 4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率 ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter. For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter. In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter Transition bandwidth.)

通过小波包分析带有随机噪声的信号，分析其障碍信号的功率谱(Use wavelet packet analysize signal with random noise, analyzes the obstacle signal power spectrum)

基于Matlab的MIT-BIH数据读取(Matlab based on the MIT-BIH data read)

说明：  三维坐标系统旋转,实现以法向量向目标轴XYZ旋转。原理说明和测试结果。(Three-dimensional coordinate system rotation vector to the target to achieve a XYZ axis rotation. Principles of instructions and test results.)

CACC discretization 是一种连续属性离散化方法，基于无监督的一种离散matlab程序(CACC discretization)

数字预失真中matlab中LMS和RLS算法(LMS and RLS algorithms for MATLAB in digital predistortion)