Distance Measuring Equipment

Distance Measuring Equipment (DME) is a radio navigation system used by aircraft to determine their distance from a ground-based station. It works by the aircraft sending a radio signal to the station, which then promptly replies. The system measures the time it takes for the signal to travel to the station and back, allowing the aircraft to calculate its distance accurately. DME helps pilots with precise location information, especially during navigation in busy airspace or bad weather, enhancing safety and efficiency during flight.