Field Dataset for Complementary Subsurface Sensing Using a Quantum Diamond Magnetometer and Multi-Frequency Ground-Penetrating Radar at a Full-Scale Test Site

This dataset contains quantum diamond magnetometer (QDM) and multi-frequency (250, 500, and 800 MHz) ground-penetrating radar (GPR) measurements collected at a full-scale bridge transition test site with documented buried targets. The dataset includes repeated stationary measurements, continuous field surveys, processed magnetic anomaly data, GPR radargrams, and supporting ground-truth information used in the accompanying MDPI Sensors publication. Our research team conducted experiments at Full-scale Crash Test Facility for Roadside Safety Hardware owned by the Korea Expressway Corporation Research Institute, located in Yesan-gun, Republic of Korea.