pd-control

QPSK Transmitter and I/Q Correlator Receiver is based on the technique of queing the information in a bit stream and on the receving end using FFT and some additive filters, as the addition of noise is made to infuse the need of a filter. Necessarily a Baseband filter is used. Modulation acheived at the receiving end. (QPSK Transmitter and I/Q Correlator Recei ver is based on the technique of the infor queing mation in a bit stream and on the receving end usi ng FFT and some additive filters, as the addition of noise is made to infuse the nee d of a filter. Necessarily a Baseband filter is u sed. Modulation achieved at the receiving end.)

a function to calculate Curvature in 2D curve

本程序是EM算法，是参数估计（极大似然估计）方法的数值解法。(This procedure is the EM algorithm, is the parameter estimation (MLE) method of numerical solution.)

it s a matlab code for reduce gray level

网上下载的一个求取微分方程的程序，大家顶下(Download a program to strike a differential equation, we parietal)

这是huang的eemd程序，将白噪声加入到了经验模态分解当中，一定程度上抑制了模态混合。(This is huang s emd program, the white noise is added to the empirical mode decomposition which suppress modal mix to some extent.)

fdtd matlab 2d simulation

介绍了坐标变换在异步电机中的应用条件和原则，以便能够快速地在异步电机中选择合适的坐标，提高工作效率．并结合异步电机矢量控制存MT坐标系中变换后，可类似于直流电机的转矩电流分量和磁场电流分量(the vector control of asynchronous motor based on the right coordinate)

两种滤波方法在导航上的应用，并且进行比较(Filter in the navigation on the two applications, and to compare)

Windowing, FIR filters