Brief History of GPS | The Aerospace Corporation
Lockheed Martin powers up its first GPS III satellite, stays on track for 2014 | Engadget
Lockheed Martin GPS satellite first of new generation
First GPS IIF satellite on station > Air Force > Article Display
First GPS III satellite successfully launched > Air Force > Article Display
First Generation GPS Satellite | the only GPS satellite on d… | Flickr
GPS Next-Generation Operational Control System | Raytheon Intelligence & Space
Feb. 14, 1989: GPS Enters Orbit | WIRED
Australia's First GPS Infrastructure Officially in Space - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
The Failed Attempt to Destroy GPS - The Atlantic
NASA History Office on Twitter: "#OTD 1978 the first generation Global Positioning System (GPS) satellite, Navstar 1, launched from Vandenberg Air Force Base, California. https://t.co/jmigNngbpz" / Twitter
Most Advanced GPS Satellite Comes Together: First Lockheed Martin-Built GPS III Ready for System-Level Testing
Brief History of GPS | The Aerospace Corporation
GPS Block III - Wikipedia
US Airforce declares that the first GPS III is "available for launch" - Geospatial World
GPS (Navstar) - Gunter's Space Page
History of GPS satellites and commercial GPS tracking | Geotab
Air Force's First GPS III Satellite Receives Commands from OCX Ground Control Segment - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
First GPS III satellite encapsulated for launch
The evolution of GPS satellites and their use today - GPS World
Newest GPS satellite goes into service – Spaceflight Now
Satellite Blocks | GEOG 862: GPS and GNSS for Geospatial Professionals
What Causes GPS Signal Loss on Satellites like Swarm? - Eos
