Two-dimensional noncontact vital sign detection using Doppler radar array approach

Summary form only given, as follows. A Doppler radar array is developed for two-dimensional noncontact vital sign detection. Using the radar array, cancellation of the noise from planar random walk of human body is achieved. The radar array also strengthens the detecting sensitivity on the respiration and heartbeat and its principle is discussed. A DC offset compensation algorithm is introduced to free the body movement cancellation from disturbance of unwanted DC offset. Experiments were performed with a human subject in the lab.