GLOBAL POSITIONING SYSTEM
Mission
The Global Positioning System (GPS) is a constellation of orbiting satellites that provides position, navigation, and timing data to military and civilian users globally. The system is operated and controlled by Space Delta 8, located at Schriever Air Force Base, Colo.
Features
GPS satellites orbit the earth every 12 hours, emitting continuous navigation signals.With the proper equipment, users can receive at least four satellite signals to calculate time, location and velocity. The signals are so accurate, time can be figured to within a millionth of a second, velocity within a fraction of a mile per hour and location to within 100 feet.Receivers have been developed for use in spacecraft, aircraft, ships, land vehicles, and precision-guided munitions, as well as for hand carrying.
GPS provides 24/7/365 navigation services including:
· Extremely accurate,three-dimensional location information(latitude, longitude and altitude), velocity (speed and direction), and precise time
· A worldwide common grid that is easily converted to any local grid system
· Passive all-weather operations
· Continuousreal-timeinformation
· Support to an unlimited number of users and areas
https://www.spaceforce.mil/About-Us/Fact-Sheets/Fact-Sheet-Display/Article/2197765/global-positioning-system/