transient-stability-

Many algorithms for PQRST feature extraction have been reported in the literature, especially algorithms for finding the QRS complex [Pahlm and Sornmo, 1984] [Hamilton and Tompkins, 1986]. In this section, only the feature extraction algorithm used in this work is described.

用Viterbi algorithm筛选经过含白噪声的信息。equalizer为采用Viterbi algorithm，有效减少ISI(码间串扰)，detector为简单的检验器。对比两者的误码率。信息数量为10001bit(using Viterbi algorithm method selecting the data. compared with simple detector. data length are 10001bits. Viterbi algorithm can reduce the affect of ISI （intersymbol interference）)

COATAS 信号的三次相位函数的matlab程序，写小论文的时候自己编的(cubic phase function of COATAS)

this code is help you to draw Fourier Series . with this code you can change some variable and explain what change for education.

说明：  通过坐标轴，随即显示坐标轴上的值域及坐标的位置（x,y轴的位置）。(rand number show)

在信噪比不断变化，给出虚警概率的前提下，当给定一信噪比值后，检测概率的变化情况。(Signal-to-noise ratio changing, given the premise of the probability of false alarm, when given a signal-to-noise ratio values, the probability of detection of changes.)

软解调程序，可用于各个通信系统的软解调，(softdemodulation)

渐变风模型，用MATLAB 仿真了渐变风的运行状态(The gradient wind model, MATLAB simulation of the gradient wind running state)

共振解调的过程如下：首先对采集到的信号进行傅里叶变换，然后利用传感器自身的谐振频率进行分析，对滤波后的信号进行包络，包络以后去除了高频部分，得到包络信号，再对改进的包络信号进一步进行低通滤波，最后对最终得到的信号进行傅立叶变换求其频谱图。共振解调的原理及其过程可以用图2 来进行表述。(The process of resonance demodulation is as follows: First, Fourier transform is performed on the collected signal, and then the resonance frequency of the sensor is used for analysis. The filtered signal is enveloped, and the high frequency part is removed after enveloping to obtain an envelope. The signal is further subjected to low-pass filtering on the improved envelope signal. Finally, the spectrum of the resulting signal is Fourier-transformed. The principle of resonant demodulation and its process can be expressed in Figure 2.)

巴特沃思滤波器matlab程序处理，包含高通、低通等等(butteword filter)