Positioning, Navigation, and Timing (PNT) Satellites
PNT Ground Networks
2018 – Galileo Ground Networks – Snapshot
Responsibility for the operation of the Galileo constellation’s ground system moved in 2018 from the European Space Agency (ESA) to the European Global Navigation Satellite System (EGNSS) Agency (GSA). The…
2018 – GPS Ground Networks – Snapshot
In 2018, the USAF continued GPS operations with ground equipment that is decades old. The number of command and control antennas (which the USAF uses to send GPS satellite commands…
2017 – PNT Ground Networks – Snapshot
During 2017, the United States Air Force still conducted operations with decades-old ground equipment. The ground network consisted of 11 command and control antennas and a total of 16 monitoring…
2016 – PNT Ground Networks – Snapshot
In 2016, the U.S. Air Force (USAF) continued to operate and maintain a large, combined-services ground network for its positioning, navigation, and timing (PNT) fleet, the Global Positioning System (GPS).…
PNT Ground Networks
Global navigation satellite systems (GNSS) provide positioning, navigation, and timing information. These satellite systems are augmented by ground stations which can be used as reference points to increase the accuracy…
2015 – PNT Ground Networks – Snapshot
The current U.S. Global Positioning System (GPS) ground control segment consists of a variety of ground antennas, monitor stations, and Air Force Satellite Control Network (AFSCN) Remote Tracking Stations. The…