LORAN (Long Range Navigation) is a radio navigation system that uses low-frequency radio signals to determine the position of a receiver. It was developed during World War II and has been used primarily for maritime and aviation navigation. LORAN works by measuring the time it takes for signals from multiple ground-based transmitters to reach the receiver, allowing it to calculate its location. The system has evolved over the years, with LORAN-C being the most widely used version before its decommissioning in the United States in 2010. Despite its decline, LORAN technology laid the groundwork for modern navigation systems, including GPS (Global Positioning System).