Positioning, Navigation, and Timing (PNT) Satellites

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…

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2015 – BeiDou – Snapshot

In 2014, China had paused in its BeiDou PNT satellite launch activities with its BeiDou satellites making up 20.5% of the global PNT satellite fleets. There were 16 BeiDou satellites…

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2015 – IRNSS – Snapshot

India’s share of the world’s operational PNT satellites hovered around 4% for 2014 and 2015.[efn_note]“List of Navigation Satellites.” ISRO. 2015. (accessed September 9, 2015)[/efn_note] Launching one Indian Regional Navigation…

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2015 – Galileo – Snapshot

[caption id="attachment_3704" align="alignleft" width="300"] Technicians fuel two of Europe's Galileo navigation satellites. Both satellites were launched in 2015. Credit: ESA/CNES/Arianespace-Service Optique CSG JW Guillon[/caption] The European Union’s space-based PNT efforts…

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2015 – GLONASS – Snapshot

As of December 2015, Russia’s Global Navigation Satellite System (GLONASS), comprised 24% of the operational global PNT constellations. Like the U.S. GPS milestone, 2015 marked the 20th anniversary of Russia’s…

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2015 – GPS – Snapshot

The U.S. Global Positioning System (GPS) satellite fleet made up 34% of the operational global positioning, navigation, and timing fleets orbiting the Earth in 2015. Originally developed for military use,…

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Infrastructure: Space Infrastructure – TSR 2012

Infrastructure: Space Infrastructure - TSR 2012 examines global human spaceflight operations to include the Chinese, and the US space stations, launch vehicles from all spacefaring nations, communications satellite constellations, PNT…

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