soumekh

杨晓菲信号与系统习题解答 重邮用的黄色封面那本(signal and system)

该源码为matlab6.5图形图像处理书籍的配套资料。(The source code for the graphic image processing books matlab6.5 supporting information.)

详细讲解了小波变换原理，运用。matlab的小波工具箱等。对初学者有较大的帮助。(Elaborate on the principles of wavelet transform, apply. matlab wavelet toolbox and so on. For beginners, a greater help.)

用matlab画出α=0,0.5,1的余弦滚降系统的频谱，并画出各自对应的时域波形。以α=1的余弦滚降系统为例，进行二进制双极性数字基带信号传输，试画出接收端的基带信号波形及眼图。(Matlab draw α = 0,0.5, 1 cosine roll-offs system of spectrum, and draw their corresponding time domain waveform. To α = 1 cosine roll-offs system as an example, the binary dual polarity digital baseband signal transmission, try drawing the receiving end baseband signal waveform and eye chart.)

本程序可以用于自然最近邻的搜索,这里以500个点威力(This procedure can be used to naturally nearest neighbor search)

同步MIMO-OFDM系统,分为SNR=10和SNR=20两种参数进行仿真。MATLAB程序。(Synchronous MIMO-OFDM system, into SNR = 10 SNR = 20 and two kinds of parameters for simulation. MATLAB.)

数学方法是部分子空间法，虚拟力的无线传感网络覆盖，做视觉测量的上位机代码。( Mathematics is part of the subspace, Virtual power wireless sensor network coverage, Do Vision Measurement PC code.)

讲述UKF无迹滤波的原理得子程序，值得一看(About the principles of UKF was no trace filter subroutine, worth a visit)

说明：  】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的 低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。(The logistic- map sequences to encrypt the watermark are used. The original audio signal in DWT (Discrete Wavelet Transform) domain is seperated into some pieces determined by the ratio between the length of the low frequency parts and the length of the encrypted watermark. Every bit of the watermark is added into the relevant pieces of the low frequency parts in the DWT domain. Experimental results show that the algorithm is robust against some StirMark attacks.)

图片中时钟时间识别的matlab GUI程序，程序不通用，个别图片可以。(A gui program of recognizing time is realized by Matlab in a picture.)