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粒子滤波算法在非线性系统中得到了广泛的应用，其精度取决于目标概率函数和重要性函数是否相近，并且样本退化问题也影响了算法的性能。针对粒子滤波算法中样本退化的问题，本文提出一种基于奇异值分解的粒子滤波算法。该算法通过使用奇异值分解方法得到的重要性概率密度函数更接近于目标概率分布，降低样本退化的影响，提高了滤波器的精度，然后在列车组合定位系统的数学模型中应用该算法进行仿真实验。 (Particle filter algorithm for nonlinear systems is widely used, its accuracy depends on whether the target probability function and importance of the functions are similar, and sample degradation also affects the performance of the algorithm. For particle filter algorithm sample degradation problem, this paper proposes a particle filter algorithm based on singular value decomposition. The algorithm by using singular value decomposition of the importance of the probability density function method to get closer to the target probability distribution, reduce sample degradation, improve the accuracy of the filter, and then apply the algorithm in combination mathematical model train positioning system simulation experiments. The simulation )

matlab在数学建模中的应用, matlab在数学建模中的应用, matlab在数学建模中的应用,(very important this file contains many contents.)

LLE算法是一种非线性数据降维方法，其特点是简单。(LLE algorithm is a kind of nonlinear data dimension reduction method. Its characteristic is simple )

变电站谐波状态估计程序，通过量测两个节点的电压和电流，计算得到另一个节点的电压电流相量，两个量测节点相角不同步，以一个节点相角为基准。(Substation harmonic state estimation procedure, by measuring the voltage and current of two nodes, one node is calculated voltage and current phasor, two phase angle measurement nodes are not synchronized with a phase angle of the reference node.)

Calculating the acceleration due to gravity using linear regression method

说明：  33节点符合分布式电源电力系统配电网的潮流计算(Matlab language, power flow calculation of power system distribution network)

说明：  利用MATLAB产生正弦信号，加入高斯白噪声后利用小波变换技术去噪声(The sine signal is generated by MATLAB, and the noise is removed by wavelet transform after Gaussian white noise is added)

MATLAB命令大全 挺管用的，具体看看吧，有实体书来着

EASY IMPLEMENTATION OF KALMAN FILTER

复杂网络中的matlab复杂网络中的matlab复杂网络中的matlab(Complex networks matlab)