FountainCode

完成M=4的正交信号的数字通信系统的蒙特卡罗仿真。分析其在加性高斯白噪声下误码率与信噪比之间的关系，绘出误码率-信噪比曲线图，并和物理曲线进行比较。(The completion of M = 4 orthogonal signals in Monte Carlo simulation of digital communication systems. Analysis of the additive white Gaussian noise bit error rate and signal to noise ratio under the relationship between the mapped BER- signal to noise ratio curve, and and physical curves for comparison.)

is esprit for signal processing

edge detection for plate recognition

matlab gui example for you

脉冲多普勒雷达是利用运动的物体对发射信号的产生的多普勒效应来测速和测距的，利用回波的延时可以测距，求出多普勒频率可以求出物体的速度(Pulse Doppler radar is to use the Doppler effect on the motion of an object generated by the transmission signal to the speed and distance, the distance can use the echo delay, the Doppler frequency can be calculated the speed of the object is obtained)

实现图片的sift特征的提取，并能够进行聚类，生成词典。并且附带详细的注释及说明。我们现在的图片有关sift的，都是使用此代码。绝对可用。对初学者和开发者都有很大的帮助。(Achieve the picture sift feature extraction and clustering can generate dictionary. And with detailed notes and instructions. We are now about sift pictures, are using this code. Absolutely available. For beginners and developers are of great help.)

Koch and Zhao algorithme type of watermarking of image

digital signal processing homwork

使用matlab实现多学科设计优化中目标层解分析法，比较形象的描述了问题的求解。(Matlab realize the use of multidisciplinary design optimization of the target layer solution analysis, comparing the image of a description of the problem solving.)

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.)