Radar Cardiogram Extraction and Respiratory Harmonic Suppression Based on Optimized Feedback Notch Filters

• Published in: IEEE access Vol. 12; pp. 32298 - 32307
• Main Authors: Wang, Yaru, Qiao, Jiahao, Yan, Keding, Shi, Ding, Zhu, Yidan, Wang, Xinyu, Xue, Huijun, Liang, Fulai, Yu, Xiao, Jiao, Teng, Lv, Hao, Wang, Jianqi, Lu, Wenzong, Zhang, Yang
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Biomedical monitoring; Cardiograms; Cardiology; Correlation; Correlation analysis; Feedback; feedback notch filter; genetic algorithm; Genetic algorithms; Harmonic analysis; Harmonics; Heart beat; Location awareness; Notch filters; Power harmonic filters; Radar; radar cardiogram; Radar imaging; respiratory harmonic suppression; Respiratory system; Ultrawideband radar

Radar is a valuable tool for noncontact vital-sign detection. Interference from respiratory harmonics presents a major challenge in radar cardiogram (RCG) extraction-mainly when the frequency of respiratory harmonics is close to or equal to that of the cardiac sub-signals. To address this problem, a...