NDG

说明：  拉格朗日多项式插值计算，可以用语内插卫星精密星历的卫星坐标(Lagrange polynomial interpolation can be inserted within the terms of precision satellite coordinates of the satellite ephemeris)

将波束空间求根MUSIC算法应用于电力系统谐波检测(Roots of the beam space MUSIC algorithm is applied to the power system harmonic detection)

基本的拉格朗日乘子法(又称为拉格朗日乘数法)，就是求函数f(x1,x2,...)在g(x1,x2,...)=0的约束条件下的极值的方法。其主要思想是引入一个新的参数λ（即拉格朗日乘子），将约束条件函数与原函数联系到一起，使能配成与变量数量相等的等式方程，从而求出得到原函数极值的各个变量的解。 (Basic Lagrange multipliers (also known as Lagrange multiplier method), is of a function f (x1, x2 ,...) in g (x1, x2 ,...)= 0 constraints under the conditions of extreme value methods. The main idea is to introduce a new parameter λ (the Lagrange multiplier), the constraint function is linked together with the original function, so variables can be paired with an equal number of equations equation, thus obtained by the original function extreme solution of the various variables.)

经典的疾病传播模型，包括SI、SIS、SIR模型等等(The classic model of disease transmission, including SI, SIR models, etc.)

DV-Hop定位算法改进，大大提高了结果的精度(DV-Hop localization algorithm improvements, greatly improving the accuracy of the results)

在进行原始数据拟合时，在时域中进行matlab分析(timedomain prony analysis)

说明：  Matlab基础知识学习，如数值计算，绘图，程序设计，文件操作，数学运算等。(Matlab basics of learning, such as numerical computation, graphics, programming, file operations, math and so on.)

基本混沌系统的同步程序，用matlab编写，并且在其他系统中也是通用的。(chaos system is made by matlab language,which is suitable for other system.)

％ PURPOSE : Demonstrate the differences between the following filters on the same problem: ％ ％ 1) Extended Kalman Filter (EKF) ％ 2) Unscented Kalman Filter (UKF) ％ 3) Particle Filter (PF) ％ 4) PF with EKF proposal (PFEKF) ％ 5) PF with UKF proposal (PFUKF)( PURPOSE: Demonstrate the differences between the following filters on the same problem: 1) Extended Kalman Filter (EKF) 2) Unscented Kalman Filter (UKF) 3) Particle Filter (PF) 4) PF with EKF proposal ( PFEKF) 5) PF with UKF proposal (PFUKF))

异步电机abc仿真模型,基于matlab的simulink仿真，源文件(Abc model of induction motor simulation, simulink of matlab-based simulation, the source file)