Human Breathing Rate Monitoring Using Modulated Scatterer-Based Radar Technology

Remote monitoring of human vital signs using Radar concepts has attracted considerable attention lately. However, the proposed methods thus far are susceptible to background clutter and random body motion which impact their utility. This paper demonstrates the application of the modulated scattering technique in remote monitoring of human breathing rate. A scatterer used as the breathing rate monitoring tag was built and modulated in order to have two different states. The states are then subtracted from each other to get an accurate measurement of the breathing rate by eliminating as much random body movement and clutter information as possible.