원문정보
초록
영어
Maternal electrocardiogram (MECG) suppression is a critical procedure to estimate fetal heart rate (FHR). The impulse noises in maternal abdomen signals (ADS) include electromyographic interference (EMGI) and fetal R waves, which deteriorate FHR estimation in MECG suppression. In this paper, we introduce the M-estimation methods, a more robust methodology, to extract pure MECG in impulse noises. In order to evaluate the performance of M-estimation methods, two innovative quantitative performance metrics, namely loss degree of fetal R wave and sensitivity of initial value, are proposed. Numerical results show that: (1) FHR estimation using M-estimation methods is more accurate than least square method (LSM) in impulse noises; (2) the robust performance of Fair is better than that of Cauchy in low SNR; (3) the robust performance of Cauchy is superior to that of Fair in high SNR.
목차
1. Introduction
2. Methods
2.1. M-estimation Theory
2.2. Modeling and Initial Value Determination
2.3. Performance Metrics for Evaluation
3. Results and Discussion
3.1. Quantitative Analysis for Synthetic ADS
3.2. Detection for Real ECG
4. Conclusion
Acknowledgements
References