Parameter Method: such as Wiener filter, Comb filter, Kalman filter and so on.

非参数方法：如谱减法，自我调节过滤器等。

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Kalman has already replaced the classic Wiener filter theory for it can not meet the development of modern target tracking system.

目前卡尔曼滤波理论基本上取代了维纳滤波理论，经典的维纳滤波方法基本上不适应现代目标跟踪系统的需求。

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