An FMCW radar for localization and vital signs measurement for different chest orientations
This work tests the ability of a frequency-modulated continuous wave (FMCW) radar to measure the respiratory rate and the eartbeat of a subject in challenging indoor scenarios. To simulate a realistic configuration for ambient assisted living (AAL) applications, in which the thorax orientation towards the antenna is typically unknown, four different scenarios were considered. Measurements were performed on five volunteers positioned with the chest, left, back, and right side facing the antenna, respectively.