GPS
GPS (Global Positioning System) is a satellite-based navigation system developed by the U.S. Department of Defense that provides precise location and time information anywhere on Earth.
Development of GPS began in the 1970s as a military navigation tool, using a network of orbiting satellites that transmit signals allowing receivers to calculate their exact location through a technique known as trilateration.
The system was made available for civilian use starting in the 1980s and became fully operational with a complete constellation of satellites by 1995, and full precision was made available to civilians in 2000.
GPS technology has since become deeply integrated into everyday life, powering smartphone navigation, ride-sharing apps, agriculture, aviation, and countless other applications requiring precise location data.