GPS

Global Positioning System

Satellite-based navigation system for determining precise locations. The Global Positioning System (GPS) is a satellite-based navigation system that provides accurate positioning, navigation, and timing information to users worldwide.

• Constellation: GPS consists of a constellation of 31 satellites orbiting the Earth at an altitude of approximately 11,000 miles (about 17,700 kilometers). These satellites continuously broadcast navigation signals.
• Operation: The system is owned and operated by the U.S. Department of Defense and is accessible to both military and civilian users globally.
• Triangulation: GPS receivers determine their position by calculating the distance to at least four satellites. This process involves measuring the time it takes for signals to travel from the satellites to the receiver.
• Accuracy: Standard GPS equipment typically provides location accuracy within 100 meters, while specialized military equipment can achieve accuracy within one meter.