ssb

用回声隐藏方法实现数字水印的许多程序，欢迎共享(This is some water echo code,I spend a lot of time on it.)

another test for demodulation of data

matlab 数字图像处理基础实验教程，能够帮助你快速入门matlab在数字图像处理中的应用。(basic experiment digital image processing matlab tutorial to help you quick start matlab in Digital Image Processing.)

implementation of 1D dwt in matlab

这是在matlab环境下 开发的一个运用遗传算法进行的优化。(This is the Matlab environment developed by using a genetic algorithm optimization.)

test music program of piano

合成孔径雷达（sar）的距离多普勒成像算法（点目标） 成像算法 RD、RMA、CS 的 matlab程序 (Synthetic aperture radar (sar) in the Range Doppler algorithm (point target) imaging algorithm RD, RMA, CS' s matlab program)

Book of Essential.MATLAB.Engineers.Scientists

ＭＡＴＬＡＢ的ＳＳＢ－ＡＭ的解调程序，比较新颖的程序设计，非常简便和易懂(MATLAB-SSB-AM demodulation process, relatively new procedure for the design, very simple and easy-to-)

％radon transform clear all ％ N=800 n=1:N fs=200 t=n/fs x1=exp(j*2*pi*(5*t+0.5*5*t.^2)) x2=exp(j*2*pi*(5*t+0.5*15*t.^2)) x=x1+x2 ％N=length(x) ％ ambifunb(x ) ％*****************************************RAT naf=ambifunb(x) htl(abs(naf)) ％ [wh,rho,theta]=htl(abs(naf)) colormap([0,0,0]) ％ xlabel( 极半径 ) ％ ylabel( 角度 ) ％**************************************％找出峰值点的坐标,计算初始频率和调频斜率(正确) ％找出峰值点的坐标 b=max(max(wh)) [u,a]=find(wh>=0.8*b) ( Radon transformclear all N = 800 n = 1: N fs = 200 t = n/fs x1 = exp (j* 2* pi* (5* t+ 0.5* 5* t. ^ 2)) x2 = exp ( j* 2* pi* (5* t+ 0.5* 15* t. ^ 2)) x = x1+ x2 N = length (x) ambifunb (x)***************************************** RATnaf = ambifunb (x) htl (abs (naf)) [wh, rho, theta ] = htl (abs (naf)) colormap ([0,0,0]) xlabel (polar radius) ylabel (angle)************************************** to find the coordinates of the peak point, calculating the initial slope of the frequency and FM (right) find the peak point of the coordinates b = max (max ( wh)) [u, a] = find (wh)