RF-MatID Frequency-domain Dataset

We introduce RF-MatID, a comprehensive dataset and benchmark designed to bridge the gap in robust material identification. RF-MatID is the largest and most diverse dataset of its kind, featuring: - 16 fine-grained categories derived from 5 superclasses (e.g., Plastic, Metal, Wood, etc.). - Wide frequency range from 4 GHz to 43.5 GHz, capturing unique electromagnetic signatures across 39.5 GHz of bandwidth. - 71k pairs of dual-domain samples, providing both raw frequency-domain measurements and processed time-domain representations. - Geometry diversity, with systematically controlled perturbations in incidence angles (0-10 deg)and stand-off distances (200-2000 mm).