variable_load

carrier frequency offset CFO模擬(carrier frequency offset CFO simulation)

说明：  fdtd模拟点源在自由空间的传播，PML边界吸收(FDTD simulation of point sources of transmission in free space, PML absorbing boundary)

数值计算里经典的欧拉算法的源程序，采用matlab写的，对理解欧拉算法有很大的帮助作用。(Numerical calculation in the classical Euler algorithm source code, using matlab write, for understanding Euler algorithm has a great help.)

FactoryPattern example to illustrate abstract, concrete, and product patterns.

小波变换进行变速箱故障诊断 首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)

用matlab实现的能分类的神经网络源码(Using matlab implementation of the neural network can be classified source)

generation Galois filed and adding and multiplying

说明：  P码的匹配滤波+FFT的捕获程序。可以用于P码的直接捕获。(P code matched filter+ FFT of the capture program. P code can be used for direct capture.)

说明：  利用matlab对图像进行栅格提取，高频增强，中值过滤，线性过滤，自适应过滤等的程序代码(The image grid using matlab code extracted)

这是我学习时候，我的课本上的课后习题，我把他整理出来！希望大家能有所收益！(This is my study, my after-school textbook exercises, I took him out of order! Hope that we can get any benefit!)