PLL

MATLAB三种卡尔曼滤波对比，分别是扩展卡尔曼滤波EKF，不敏卡尔曼滤波UKF，粒子滤波PF。有跟踪效果和估计值误差。(MATLAB the three Kalman filtering contrast, extended Kalman filter EKF, Unscented Kalman Filter UKF, particle filter PF. Tracking effect and the estimated value of the error.)

内含巴特沃思滤波器（Butterworth）MATLAB代码，分高通与低通两种情况，并用mesh显示滤波器的三维图(Containing Butterworth filter (Butterworth) MATLAB code, sub-high-pass and low pass both cases, with mesh filter of three-dimensional map display)

说明：  采用四元数法的标准圆锥运动的姿态角仿真程序，。(Quaternion method using the standard cone movement attitude angle simulation procedures.)

1. 608组样本，第一列数字是标号，第二列数字是出现损坏的时间，第三列表示数据有效性，为0有效 2. 损坏时间是对数正态分布的，需要拟合 3. 求均值80%置信区间 4. 成本为m，价格为s，保证盈利20%，选取保修期 5. 比较保修期和拟合数据的均值 6. 若保修期就是拟合损坏时间的均值，求出利润率 loadd.m：加载样本数据，并选取有效数据 period.m：加载成本、价格数据，计算利润和保修期的关系(1.608 groups of samples, the first number is the label, the second column number is the time to appear damage, the third list shows the validity of the data, which is 0 effective. 2. damage times are logarithmic normal distribution and need to be fitted 3. mean in 80% confidence interval 4. the cost is m, the price is s, the profit is 20%, the warranty period is selected. 5. compare the mean value of the warranty period and the fitting data 6. if the warranty period is to fit the mean damage time, the profit rate is calculated. Loadd.m: load the sample data and select the valid data Period.m: loading cost, price data, and calculating the relationship between profit and warranty period)

MATLAB SVM KM TOOLBox de 的例子(MATLAB SVM KM TOOLBox de examples)

Generating bunch of rays parellel to the given axial ray

说明：  simulink风力发电机组的PQ计算模块，用于风电领域的集成模块(P&Q control)

计算气动力边界条件，非守恒无激波跨声速情况下使用(Calculation of the aerodynamic boundary conditions, non-conservation of transonic shock-free use)

基于传输矩阵法的线性啁啾光纤光栅反射谱的仿真研究( linearly chirped fiber grating reflection spectrum of the simulation based on Transfer matrix method )

ipv4过渡到ipv6的一些技术分析，希望对大家有用(ipv4 transition to ipv6 some of the technical analysis, hope for all of us)