Ordinary radar marks a drone as just a dot. A new method turns radio echoes into a volumetric sculpture: the signal outlines shape, tilt, and motion. The principle resembles a spectroscope that splits light into a rainbow — only here, it's the reflected radio signal that gets decomposed, and a tiny delay due to the speed of light adds depth. The sculptor program shapes a complete model from the invisible 'clay' of reflections, and each new pulse is a brushstroke that refines the details. This sensitivity surpasses cameras: the radar sees through fog and darkness, recognizes models, and notices the slightest changes. Most unexpectedly: the digital sculpture deforms if the drone is carrying something. The method detects even a light package — the wave reflection subtly changes, revealing the cargo. The technology promises safer skies for cities.
A sculpture made of radio waves deforms if the drone picks up even a light bundle. That's how radar becomes a cargo detector.