GPS.gov: Space Segment
Jun 28, 2022 · As of July 3, 2023, there were a total of 31 operational satellites in the GPS constellation, not including the decommissioned, on-orbit spares. For more up-to-date constellation status information, visit the NAVCEN website.
GPS.gov: GPS Overview - GPS: The Global Positioning System
Feb 22, 2021 · The space segment consists of a nominal constellation of 24 operating satellites that transmit one-way signals that give the current GPS satellite position and time. Learn more. Control Segment.
Other Global Navigation Satellite Systems (GNSS) - GPS: The …
Oct 19, 2021 · Global navigation satellite system (GNSS) is a general term describing any satellite constellation that provides positioning, navigation, and timing (PNT) services on a global or regional basis.
GPS.gov: Control Segment - GPS: The Global Positioning System
Aug 9, 2021 · The GPS control segment consists of a global network of ground facilities that track the GPS satellites, monitor their transmissions, perform analyses, and send commands and data to the constellation. The current Operational Control Segment (OCS) includes a master control station, an alternate master control station, 11 command and control ...
GPS.gov: New Civil Signals
Jul 3, 2023 · A major focus of the GPS modernization program is the addition of new navigation signals to the satellite constellation. The government is in the process of fielding three new signals designed for civilian use: L2C, L5, and L1C.
GPS.gov: Image Library - GPS: The Global Positioning System
Jul 27, 2021 · Learn about the various generations of GPS satellites -- Blocks II/IIA, IIR, IIR(M), IIF, III, and IIIF -- on the Space Segment page. Go there Control Segment
GPS.gov: GPS Modernization - GPS: The Global Positioning System
Nov 3, 2017 · GPS modernization involves a series of consecutive satellite acquisitions, including GPS Block IIR-M, GPS Block IIF, GPS III, and GPS III Follow-On. It also involves parallel improvements to the GPS control segment, including the GPS III Contingency Operations (COps), M-Code Early Use (MCEU), and Next Generation Operational Control System (OCX ...
GPS.gov: GPS Service Outages & Status Reports - GPS: The Global ...
Jun 17, 2022 · GPS Service Outages & Status Reports. For help with wrong/missing addresses, bad directions, and other mapping errors in GPS devices, please visit our page on Address, Route, & Map Problems. Go there. Experiencing GPS satellite service disruptions, degradation, or position/time anomalies?
GPS.gov: GPS Accuracy - GPS: The Global Positioning System
Mar 3, 2022 · GPS satellites broadcast their signals in space with a certain accuracy, but what you receive depends on additional factors, including satellite geometry, signal blockage, atmospheric conditions, and receiver design features/quality.
GPS.gov: Space Applications
Oct 21, 2021 · The Global Positioning System (GPS) is revolutionizing and revitalizing the way nations operate in space, from guidance systems for crewed vehicles to the management, tracking, and control of communication satellite constellations, to monitoring the Earth from space.