eryuan1

通过对基4快速傅里叶的介绍，使用matlab实现了基4快速傅里叶变化(Through the radix-4 Fast Fourier presentation, using matlab to achieve a base four fast Fourier transform)

最优控制理论中Ryan算法程序，，其他的就不多说了。。(Ryan optimal control theory algorithm)

合成孔径雷达的模糊与 PRF ；连续形式的回波模型 ； 抽样信号的频谱 ； 抽样形式的回波模型 ；方位模糊的仿真与抑制 (Fuzzy synthetic aperture radar and PRF continuous form of echo model sampling frequency spectrum sample form of echo model azimuth ambiguity suppression and Simulation)

实现对自适应波束形成SIM算法的仿真，在该程序中，我们先设置入射的信号，再进行互协方差矩阵和自协方差矩阵的求解来实现该算法(To achieve adaptive beamforming algorithm for the simulation of SIM, in the process, we first set up the incident signal and then cross-covariance matrix and covariance matrix from the solution to the realization of the algorithm)

说明：  ：针对MP3 编码方式和帧结构进行分析，利用帧中的比例因子提出了一种压缩域水印算法。算法通过引入帧变化分析步 骤，很好地实现了水印的自适应嵌入。对于不同的系统要求，还可以通过修改门限信噪比的值SNRlim按需进行水印嵌入，使算法 具有更大灵活性。同时在牺牲一定的嵌入空间前提下，实现了水印信息的自同步。实验表明，对于不同风格的音乐，该水印算法 具有很好的不可听性。(In this paper，the encoding method and the frame structure of MP3 are expounded in detail，a watermark algorithm is proposed based on the scale factor in MP3 frame.By introducing the step of frame altering analysis，the algorithm can realize that watermarks is embedded adaptively.By modifying threshold SNRlim（the ratio of signal to noise），the algorithm can meet different requirements of some system，that is what enable the algorithm to have a bigger flexibility.Based on expense of some embedding positions，the watermark can be embedded with self-synchronization.The experiment results show this algorithm can get a good audio effect with various types of audio.)

斯坦福ply格式文件读取显示程序，用matlab写的，测试可用(Stanford ply format file to read the display program, written with matlab, the test can be used)

工程测试信号 信号发生器 可产生多种波形并绘制，还可播放声音(Engineering test signal generator can produce a variety of signal waveforms and plot, but also play a sound)

This is the matlab code of improved LEACH. It describe the raffinement of LEACH protocol

Histogram of Orientated Gradients for gray-level images

这是利用MATLAB来模拟色子，一个非常实用在程序(This is the use of MATLAB to simulate the dice, one very useful in the program)