Through the Wall Respiration Rate Detection of Multiple Human Subjects Using Hilbert Vibrational Decomposition

Abstract

In this paper, through-the-wall detection of multiple human subjects is demonstrated using Doppler radar, with the help of Hilbert Vibrational Decomposition (HVD). The proposed Doppler radar can detect multiple human subjects behind a wall by respiration rate estimation. With different breathing conditions resembling real-life scenario, respiration signals of human subjects are extracted. The algorithm works in many real-life situations and detects the respiration rate of human subjects. It is expected to find use in the earthquakes, building collapses and security applications.