mmWave Imaging Enabled Multi-Site Respiratory Monitoring

This study presents an advanced high-resolution mmWave radar imaging system for multi-site respiratory monitoring, utilizing MIMO (Multi-Input Multi-Output) radar technology to enhance spatial resolution in monitoring respiration. The imaging system incorporates multi-element uniform linear transmit and receive antenna arrays, producing detailed 3-D radar backscatter grids to capture subtle respiratory motions across multiple body sites. Through MIMO beamforming and spatial coherence mapping, the system identifies respiration intensity and motion patterns at the chest and abdomen, validating the radar's performance against standard BIOPAC respiratory data. Results indicate significant potential for non-contact, multi-site respiratory assessment, enhancing traditional radar applications with improved resolution and sensitivity.