greymodel11

it has different programs they are useful

与滤波器设计有关的matlab工具箱函数：bispeci.m(And filter design-related functions matlab toolbox: bispeci.m)

这是一个关于双向介质瑞雷面波的正演模拟，效率非常的高，程序中用了衰减吸收边界条件，效果非常的好(This is a two-way medium Rayleigh wave forward modeling, its efficiency is very high, the program using the decay of the absorbing boundary conditions, the effect is very good)

说明：  matlab图像处理代码,很有帮助的参考程序代码(matlab image processing code, and useful reference code)

说明：  MATLAB深入详解的随书光盘，内有电子教案和源文件(MATLAB depth Xiangjie the CD with the book, there are electronic lesson plans and source files)

有关有限脉冲响应滤波器的设计方法的介绍。(For finite impulse response filter design methods introduced.)

支持向量机对文本进行分类，参数选择进行优化(Support vector machine SVM text classification)

说明：  多通道和单通道接收到的北斗信号数据，利用接收到的北斗数据（.dat .txt文件），进行解析，得到初始伪距，平滑伪距，载波相位，并计算其标准差，并画图。(The Beidou signal data received by multi-channel and single channel are analyzed by using the Beidou data (. Dat. TXT file). The initial pseudo range, smooth pseudo range and carrier phase are obtained, and the standard deviation is calculated and plotted.)

利用Contourlet、ICA、混沌粒子群分离去噪(Using Contourlet, ICA, separation of chaotic particle swarm denoising)

由设计要求可知，wp<=0.2π，允许误差幅度小于1dB，ws>=0.3π内衰减应大于15dB。为了验证数字滤波器的实际滤波功能，设计程序时，把输入序列定为验证函数x（t）=4sin（100πt）以及x（t）=4sin（200πt）和x（t）=4sin（400πt）。又因为Ts=1.25ms，T=80ms，故采样点为64，即N=64，所以当M=6，可以同时调试并验证程序的滤波功能。(Seen by the design requirements, wp < = 0.2π, allow a margin of error of less than 1dB, ws> = 0.3π within attenuation greater than 15dB. In order to verify the actual filtering function of the digital filter design program, the input sequence as validation function x (t) = 4sin (100πt) and x (t) = 4sin (200πt) and x (t) = 4sin (400πt) . And because Ts = 1.25ms, T = 80ms, so the sampling points is 64, that is N = 64, so when M = 6, can debug and validate filtering program.)