Remote respiration and heart rate monitoring with millimeter-wave/terahertz radars

Abstract

The characteristics of continuous-wave millimeter-wave/terahertz radars make them candidates to remotely sense the physiological parameters of individuals, such as respiration and heart rates. The characteristics of these radars include transmission through the atmosphere and clothing, well-collimated beams, and sensitivity to small displacements. The directional Doppler velocity can be used to measure the movement of a subject's chest wall due to respiration and the more subtle motion of the body due to the cardiopulmonary system. We will present an overview of two systems that have been developed along with representative data from each.