exam8_2

是一种用于含有隐变量（hidden variable）的概率参数模型的最大似然估计或极大后验概率估计的matlab算法。 (EM MATLAB)

电力系统暂态稳定程序，可以进行暂态稳定计算,是学习PCA特征提取的很好的学习资料，pwm整流器的建模仿真。( Power System Transient Stability Program, can be transient stability, Is a good learning materials to learn PCA feature extraction, Modeling and simulation pwm rectifie.)

matlab中fft数字通信源程序的实现(fft in matlab source code implementation of digital communication)

二维波动有限差分octave程序，并画成动画显示。(Two-dimensional wave finite-difference octave program, and drawn animation.)

QPSK modulation system with recover loops(This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.)

用多重网格法解非线性偏微分方程，假定N=4时为第0层l为输入的层数 r为MGM在在J-1层调用的次数(With multi-grid method for solving nonlinear partial differential equations, assuming N = 4 when the input layer 0 l layers r for MGM in the number of J-1 layer calls)

给出了平方率检波下，求检测门限值的程序。(Gives the square of the rate of detection, the detection threshold seeking procedure.)

Code matlad for root equation by some methods

Robust Eye Detection

for edge detection(linear detection as road) in radar images we can use the morphology technique. here i am coding fo morphology process to detect the linear feature of an image.