Accurate Measurement of Human Vital Signs With Linear FMCW Radars Under Proximity Stationary Clutters

• Published in: IEEE transactions on biomedical circuits and systems Vol. 15; no. 6; pp. 1393 - 1404
• Main Authors: Liu, Jingtao, Li, Yuchen, Li, Changzhi, Gu, Changzhan, Mao, Jun-Fa
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.12.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Clutter; Continuous radiation; Direct current; FMCW radar; Frequency dependence; Heart Rate; Humans; Millimeter waves; Motion detection; motion sensing; Offsets; phase demodulation; Phase modulation; Proximity; quadrature I/Q; Quadratures; Radar; Radar clutter; Radar detection; Radar tracking; short-range; Signal Processing, Computer-Assisted; Synthesis; Theoretical analysis; vital sign; Vital Signs

Vital sign detection using linear frequency-modulated continuous-wave (LFMCW) radar may be subject to the proximity stationary clutters. This paper presents a novel technique to synthesize the slow-time I / Q signals, which are equivalent to those in a single tone quadrature CW radar, from a single-...