GPS-2 (Navstar-2) - Gunter's Space Page
GPS: What is it and how does it work? | Space
KSP History Part 168 - USA-35 (The first operational GPS Satellite) : r/KerbalSpaceProgram
GPS.gov: Space Segment
A short history of GPS development > Schriever Space Force Base (Archived) > Article Display
Spaceflight Now | Delta Launch Report | Shepherding a new era of GPS satellites to orbit
GPS III/IIIF | Lockheed Martin
GPS - Telecompedia
Brief History of GPS | The Aerospace Corporation
Global Positioning System - Wikipedia
Satellite Navigation - GPS - Space Segment | Federal Aviation Administration
Abstract of the GPS System and Meinberg GPS Time Signal Receivers
USA: NOAA satellites help us prepare for severe weather | PreventionWeb
Feb. 14, 1989: GPS Enters Orbit | WIRED
USA-213 - Wikipedia
GPS registers most accurate signal yet > Air Force > Article Display
GPS | Definition, Types, Uses, & Facts | Britannica
USA-203 - Wikipedia
USA-309 - Wikipedia
Satellite Navigation - Global Positioning System (GPS) | Federal Aviation Administration
US Military GPS - Army Technology
ULA Atlas V succesfully deploys new GPS satellite - NASASpaceFlight.com
Global Positioning System | NASA
Global Positioning System > United States Space Force > Fact Sheets
USAF's Next-Gen GPS Satellites Will Be a Huge Upgrade...Eventually
NavIC, India's Satellite-Based Navigation System, As Good As GPS Of United States: Govt
List of GPS satellites - Wikipedia
America advances GPS with new satellites | ShareAmerica
