决策滤波器在数据处理中的应用

Application of the decision-making filter in data processing

判别或消除偶然误差是仪器数据处理的第一步.为了消除突变性扰动或失码等尖脉冲干扰,介绍了一种基于L×MAD准则的非线性滤波法(决策滤波器),实现对奇异数据的实时判别,并用采集数据序列的中值代替奇异数据,实现对奇异数据的实时处理.这种决策数字滤波器具有极强的灵活性和实用性,目前已广泛应用于智能仪器的基本数据处理中.

The first step of data processing is to distinguish or eliminate accidental error.To avoid the interference caused by a sudden disturbance or missing codes,a nonlinear filtering method based on L×MAD principle is introduced.So the real-time distinguishing of singular data can be realized,and real-time processing of singular data can be realized through replacing the singular data with median.This kind of decision-making filter has been widely used in basic data processing of smart instruments due to its great flexibility and utility.