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http://dx.doi.org/10.5515/JKIEES.2010.10.4.250

Detection of Human Vital Signs and Estimation of Direction of Arrival Using Multiple Doppler Radars  

An, Yong-Jun (Department of Electrical and Electronic Engineering, Yonsei University)
Jang, Byung-Jun (Department of Electronics Engineering, Kookmin University)
Yook, Jong-Gwan (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of electromagnetic engineering and science / v.10, no.4, 2010 , pp. 250-255 More about this Journal
Abstract
This paper presents a non-contact measurement method of vital signal by the use of multiple-input multiple-output (MIMO) bio-radar system, configured with two antennas that are separated by a certain distance. The direction of arrival (DOA) estimation algorithm for coherent sources was applied to detect vital signals coming from different spatial angles. The proposed MIMO bio-radar system was composed of two identical transceivers sharing single VCO with a PLL. In order to verify the performance of the system, the DOA estimation experiment was completed with respect to the human target at angles varying between $-50^{\circ}$ and $50^{\circ}$ where the bio-radar system was placed at distances (corresponding to 50 cm and 95 cm) in front of a human target. The proposed MIMO bio-radar system can successfully find the direction of a human target.
Keywords
Bio Radar; Doppler Radar; DOA; Heartbeat; MIMO; Respiration;
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Times Cited By KSCI : 3  (Citation Analysis)
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