The LDTK-SAR Displacement Monitoring Digital Array Radar is a fully solid-state, digital, portable highresolution imaging radar independently developed by LADARTeK. With its small size, light weight, high precision, and excellent reliability, the radar supports single-person carrying and rapid deployment. It is capable of acquiring high-resolution radar images around the clock and in all weather conditions. By employing interferometric measurement technology, it can achieve sub-millimeter-level deformation monitoring.