Signal power variation for bio-radar applications

Abstract

Micro-Doppler radars have been widely used for the remote vital signs acquisition. In those cases, the signals quality is directly related with the received power provided by the reflecting chest-wall. In order to determine which is the optimal radar configuration, it is important to study the signal behavior in the near-field region considering the Radar Cross Section (RCS) of the human chest. In this work, simulations are performed to characterize the received signal power variation, considering the subject distance in relation to the radar.