r-21

this performs a GUI based canny edge detection

说明：  用MATLAB编写的FFT演示程序，旁瓣可由窗函数来减弱(FFT using MATLAB prepared demo program, sidelobe window function may be to weaken)

用comsol软件和matlab计算光子晶体波导带隙，对于计算光子晶体非常好用哦(Using Comsol and matlab，it computed photonic crystal waveguide band gap, it is very useful)

this program simulates 2D electromagnetic Maxwell equations , by using finite difference time domain method FDTD..and it simulates the perfect matched layer to prevent the reflections that may occure at the boundaries of the problem space

matlab code for run the algorithm of Locality Preserving Projection

说明：  利用粒子滤波算法的对于非线性非高斯信号处理的优越性能，将之用于模态信号、振动信号去噪处理。(The particle filter algorithm for nonlinear non-Gaussian signal processing, superior performance, it is used for mode signal, vibration signal denoising.)

说明：  很好的扩张滤波算法 精度高 时间短 适合导航运算(The expansion of good short time filtering algorithm for high precision navigation operations)

采用常用的模糊规则完成水箱液位的模糊控制，使液位基本保持不变(Fuzzy Control for washer.rar)

this is the source code for pixel value difference

说明：  关于MATLAB应用于调制解调器的设计。其中有详细的关于信号的调制与解调的MATLAB的程序(MATLAB used on modem design. Including detailed information about the signal modulation and demodulation of the MATLAB program)