基于RLS-ANC自适应滤波的FECG信号提取方法  

A Method for Extracting Fetal Electrocardiogram Based on Recursive Least Squares Adaptive Noise Cancellation Filtering

作　　者：刘世金[1] 徐文[1] 刘大利[1] 苏明[1] 

机构地区：[1]湖北国土资源职业学院信息工程系,湖北荆州434002

出　　处：《北京生物医学工程》2005年第6期414-417,共4页Beijing Biomedical Engineering

摘　　要：本文应用RLS-ANC(recursive least squares adaptive noise cancellation)自适应滤波方法提取胎儿心电(FECG)信号。该方法采用RLS-ANC自适应滤波消除母亲心电,提取胎儿心电信号。实验结果表明,本方法适应非平稳信号的能力强,收敛速度快,提取效果好于NLMS(normalizedleast mean squares)算法。A method based on recursive least squares adaptive noise cancellation filtering is used to extract FECG. The recursive least squares adaptive noise cancellation （RLS-ANC） filtering has been applied for eliminating maternal ECG to realize the extraction fetal ECG. The experiments demonstrate that the performance of the FECG extraction based on RLS-ANC is better than that based on normalized least mean squares （NLMS）, it can improve the convergence rate of NLMS algorithm and the adaptive tracking ability of non-stationary signal.

关 键 词：胎儿心电 自适应滤波 自适应噪声抵消 RLS算法 NLMS算法 

分 类 号：R318.04[医药卫生—生物医学工程]