粒子滤波是基于序贯Monte Carlo 仿真方法的非线性滤波算法，对基本粒子滤波算法的原理实现步骤进行了详细的介绍，进行了仿真试验。-Particle filter is based on sequential Monte Carlo simulation method of nonlinear filtering algorithm, the principle of elementary particle filter algorithm to achieve a detailed introduction to the steps carried out simulation experiments.