Aeroelastics_Bifurcation

利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。(Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error.)

用于libsvm数据转换，使得特征矢量按规定的方式转换(Libsvm for data conversion, making feature vector in accordance with the provisions of the mode switch)

速度分析 用于地震勘探速度分析及动校正（NMO）(Velocity analysis for seismic velocity analysis and NMO (NMO))

这是一个可用的两电平，SVPWM仿真模型，大家可以看看(SVPWM simulik model)

说明：  主要运用gui的控件来进行调整数值，可以进行绘图功能(primarily use the controls to adjust values can be graphics)

小型矩量法解决天线散射问题，在matlab环境下运行。(Small antenna scattering method of moments to solve the problem, run the matlab environment.)

：滤波 fs=400 采样频率,必须大于两倍基带信号最高频率 ts=1/fs 采样时间间隔 T=5 时间窗大小 t=0:ts:T (hf1=zeros(1,N) hf1(f<=B1&f>=-B1)=1 y1=hf1.*fftshift(y) figure subplot(211) plot(f,abs(fftshift(y))/N,f,hf1, r-- ) axis([-fs/2,fs/2,0,1.2]) title( 原信号频谱 ) xlabel( f /Hz ) subplot(212) plot(f,abs(y1)/N) title( 低通滤波，截止频率90Hz ) xlabel( f /Hz ))

its about induction motor and how to control it

MATALAB BASEDSIMULATION IN DEC 2013

this script is used for watermarking a text using converting text to 0, 1 symbols. this program uses Huffman coding and decoding for increasing capacity . finally returns 0 or 1 for validity check.