维纳滤波（wiener filtering) 一种基于最小均方误差准则、对平稳过程的最优估计器。这种滤波器的输出与期望输出之间的均方误差为最小，因此，它是一个最佳滤波系统。它可用于提取被平稳噪声所污染的信号。(Wiener filtering is an optimal estimator based on the minimum mean square error criterion for the stationary process. The mean square error between the output of the filter and the desired output is minimal, so it is an optimal filter system. It can be used to extract signals contaminated by stationary noise.)