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독립요소분석을 이용한 태아심전도 추출을 위한 시변 칼만 평활기의 개발-예비연구

Other Titles
 Development of Time Varying Kalman Smoother for Extracting Fetal ECG using Independent Component Analysis : Preliminary Study 
 이충근  ;  김봉수  ;  권자영  ;  최영득  ;  송광섭  ;  남기창 
 Journal of the Institute of Electronics and Information Engineers of Korea (전자공학회논문지), Vol.49(10) : 202-208, 2012 
Journal Title
Journal of the Institute of Electronics and Information Engineers of Korea(전자공학회논문지)
Issue Date
Fetal ECG ; Fetal heart rate ; Time varying ; White Gaussian noise ; Kalman smoother
Fetal heart rate monitoring is important information to assess fetal well-being. Non-invasive fetal ECG (electrocardiography) can be derived from maternal abdominal signal. And various promising signal processing methods have been introduced to extract fetal ECG from mother’s composite abdominal signal. However, non-invasive fetal ECG monitoring still has not been widely used in clinical practice due to insufficient reliable measurement and difficulty of signal processing. In application of signal processing method to extract fetal ECG, it might be lower signal to noise ratio due to time varying white Gaussian noise. In this paper, time varying Kalman smoother is proposed to remove white noise in fetal ECG and its feasibility is confirmed. Wiener process was set as Kalman system model and covariance matrix was modified according to white Gaussian noise level. Modified error covariance matrix changed Kalman gain and degree of smoothness. Optimal covariance matrix according to various amplitude in Gaussian white noise was extracted by 5 channel fetal ECG model, and feasibility of proposed method could be confirmed.
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Appears in Collections:
1. College of Medicine (의과대학) > BioMedical Science Institute (의생명과학부) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Obstetrics and Gynecology (산부인과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Urology (비뇨의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kwon, Ja Young(권자영) ORCID logo https://orcid.org/0000-0003-3009-6325
Kim, Bong Soo(김봉수)
Nam, Ki Chang(남기창)
Lee, Chung Keun(이충근)
Choi, Young Deuk(최영득) ORCID logo https://orcid.org/0000-0002-8545-5797
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