卡尔曼滤波器是一个“optimal recursive data processing algorithm（最优化自回归数据处理算法）-Kalman filtering, also known as linear quadratic estimation (LQE), is an algorithm that uses a series of measurements observed over time, containing noise (random variations) and other inaccuracies, and produces estimates of unknown variables that tend to be more precise than those based on a single measurement alone.