List of GPS satellites - Wikipedia
Army ponders satellite partners for 'Lonestar' GPS interference warning system - Breaking Defense
How Does GPS Work? | NASA Space Place – NASA Science for Kids
What Is GPS? The Complete Guide to the Uses of GPS | Geotab
GPS Next-Generation Operational Control System | Raytheon Intelligence & Space
GPS | Definition, Types, Uses, & Facts | Britannica
GPS Satellites | Lockheed Martin
GPS Satellites | Lockheed Martin
Satellite Navigation - Global Positioning System (GPS) | Federal Aviation Administration
Scientists create their own GPS by spying on internet satellites | Science | AAAS
Global Positioning System Satellite Achieves 20 Years On-Orbit > Los Angeles Air Force Base > Article Display
Brief History of GPS | The Aerospace Corporation
GPS Block III: a new generation of GPS satellites now included in the EGNOS solution | EGNOS User Support
GPS III Launch Will Provide Global M-Code - Breaking Defense
Global Positioning System Payloads | L3Harris® Fast. Forward.
What is GPS? | NASA
First GPS III satellite successfully launched > Air Force > Article Display
The Failed Attempt to Destroy GPS - The Atlantic
New Air Force Satellites Launched To Improve GPS | TechCrunch
GPS error caused '12 hours of problems' for companies - BBC News
GPS Block IIF - Wikipedia
Feb. 14, 1989: GPS Enters Orbit | WIRED
DARPA to re-invent GPS navigation without the use of satellites - ExtremeTech
