Global Positioning System (GPS)
Provide highly accurate positioning, navigation, and timing data (globally, 24 hours a day, and in any type of weather) to an unlimited number of civil users and authorized military users.
The Global Positioning System (GPS) is comprised of three segments: space segment, control segment, and user segment. The space segment consists of 24 or more satellites in six orbital planes, traveling in semi-synchronous (12-hour) orbits around the earth. The control segment, sometimes referred to as the ground segment, consists of a Master Control Station (MCS), a Back-Up MCS (BMCS), six dedicated monitor stations, five ground antennas (four dedicated and one shared), and eight National Geospatial-Intelligence Agency (NGA) monitor stations. The user segment includes the myriad of civil and military GPS receivers used for air, land, sea, and space applications. The GPS is commanded and controlled by Air Force Space Command, 2nd Space Operations Squadron at Schriever AFB, CO.
Global Broadcast Service (GBS)
Provide global broadcast of high-volume, high-speed information to deployed forces.
The Global Positioning System (GPS) is comprised of three segments: space segment, control segment, and user segment. The space segment consists of 24 or more satellites in six orbital planes, traveling in semi-synchronous (12-hour) orbits around the earth. The control segment, sometimes referred to as the ground segment, consists of a Master Control Station (MCS), a Back-Up MCS (BMCS), six dedicated monitor stations, five ground antennas (four dedicated and one shared), and eight National Geospatial-Intelligence Agency (NGA) monitor stations. The user segment includes the myriad of civil and military GPS receivers used for air, land, sea, and space applications. The GPS is commanded and controlled by Air Force Space Command, 2nd Space Operations Squadron at Schriever AFB, CO.
GPS SATELLITE
This NASA produced short film describes the Global Positioning System. It is a great summary and can be used to augment the Galaxy Explorers Mission Plan on GPS.
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