“…Observing, measuring, and monitoring vital signs, such as heartbeat rate, pulse rate, or breathing rate, are very important for conducting medical triage, patient monitoring, and stationary human detection, as well as finding victims buried in earthquakes or building collapses. Micro‐Doppler returns can be modulated by vital signs including heartbeats moving the skin, breathing moving the thorax, and vibration in larynx while talking [99–107].…”