Dispersed passive RF-sensing for 3D structural health monitoring

We propose a sensing system comprising large network of tiny, battery-less, Radio Frequency (RF)-powered sensors that use backscatter communication. The an entirely passive technique to 'sense' the parameters wireless channel between themselves. Since material properties influence RF channels, this fine-grain can uncover multiple both at scale and fine spatial resolution. In paper, we study feasibility proposed for monitoring in which are embedded. performed set experiments where sensor-to-sensor well-defined using physics-based modeling, compared theoretical experimentally obtained values. For some interest, like humidity or strain, relationship with observed have be modeled relying on data-driven approaches. initial show observable difference phase variation applied weights.