DIGITAL_MOD

说明：  cdma通信过程中信道瑞利衰落模型及m伪随机序列的仿真(cdma communication process for channel Rayleigh fading model and the simulation of pseudo-random sequence m)

matlab files, submitted as part of assignmrnt number 2 of ADCS

一二次雷达资料相关整理 一二次雷达资料相关整理 (A secondaryradar data related to sorting )

包括脚本文件和函数文件形式，分数阶傅里叶变换计算方面,FIR 底通和带通滤波器和IIR 底通和带通滤波器。( Including script files and function files in the form, Fractional Fourier transform computing, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter.)

提取信号的小波细节系数，对原始信号进行3层分解，分别提取每一层信号的细节系数。(To extract the signal wavelet detail coefficients of the original signal is 3 layers of decomposition, respectively to extract the signal the detail coefficients of each layer)

高信噪比实测数据线谱提取，使线谱提取的一种典型方法(high signal-to-noise ratio measured spectral line data extraction, spectral lines from a typical method)

M=512 原图像长度 N=64 K=8 I=zeros(M,M) J=zeros(N,N) BLOCK=zeros(K,K) 显示原图像 I=imread( f:ceshiyuanshitu.bmp ) figure imshow(I) xlabel( 原始图像 ) 显示水印图像 J=imread( f:ceshilogistic_nuaa64.bmp ) figure imshow(J) xlabel( 水印图像 ) 嵌入水印 tem=1 for p=1:N for q=1:N x=(p-1)*K+1 y=(q-1)*K+1 BLOCK=I(x:x+K-1,y:y+K-1) BLOCK=dct2(BLOCK) if J(p,q)==0 a=-1 else a=1 end BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01) BLOCK=idct2(BLOCK) I(x:x+K-1,y:y+K-1)=BLOCK end end 显示嵌入水印后的图像 figure imshow(I) xlabel( 嵌入水印后的图像 ) imwrite(I, f:ceshiembedded.bmp )

mathlab的各种命令程序实例，快速的运用matlab(mathlab)

利用Matlab模拟点电荷电场的分布,输入两个电荷的电量大小(Distribution Distribution Distribution use of Matlab simulation point charge electric field distribution using Matlab simulation point charge electric field simulation using Matlab point charge electric field distribution point charge electric field simulation using Matlab Matlab simulation of the electric field of a point charge)

The MATLAB Teaching Code consist , text files containing MATLAB commands for performing basic linear algebra computation