Home // SENSORDEVICES 2022, The Thirteenth International Conference on Sensor Device Technologies and Applications // View article
Authors:
Shahzad Ahmed
Junbyung Park
Chanwoo Choi
Sung Ho Cho
Keywords: FMCW radar; beamforming; human vital sign extraction.
Abstract:
Radar sensor provides a continuous and non-contact solution for human vital sign extraction. Radar sensor records the human chest vibrations and the received radar returns are processed to extract breathing rate (BR) and heart rate (HR). For directional radars, with an increase in angle of arrival (AOA), the strength of the signal reflected from target decreases. Since beamforming can increase the signal strength by steering the beam towards human target, this paper evaluates the performance of vital sign extraction with and without beamforming cases. Experiments were performed with human subject located at different AOA and vital signs were extracted in three different scenarios, which are (1) without beamforming, (2) with transmitter beamforming, and (3) with receiver beamforming. Preliminary comparison shows that focusing the radar signal towards the AOA decreases the mean absolute error (MAE) between the radar and the gold standard reference.
Pages: 38 to 40
Copyright: Copyright (c) IARIA, 2022
Publication date: October 16, 2022
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-68558-006-3
Location: Lisbon, Portugal
Dates: from October 16, 2022 to October 20, 2022