Cheap Port Radar Uses Existing Cell Towers

Researchers at the Fraunhofer Institute have developed a novel security system that repurposes existing cell towers as a low-cost radar system for ports. The system uses Passive Coherent Location (PCL) to detect ships, even small ones, up to 4 kilometers away. By analyzing reflections of cell tower signals, the system creates a dynamic map of port traffic. This eliminates the need for expensive radar installations, making it a budget-friendly solution for enhancing port security, especially in remote locations.