Development of a reconfigurable low cost multi-mode radar system for contactless vital signs detection

In this work, we propose a Multi-Mode Radar (MMR) with reconfigurable center frequency incorporating the functions of both CW and SFCW Doppler radars rather than using separate platforms for each radar type. This MMR is controlled by a micro-controller and it can be used in an indoor environment for tracking more than one subject, human gait analysis and for long-range vital signs detection. The radar was built and experimentally utilized for both close range and long range heart rates monitoring.