GPS IIF (Global Positioning System) or Navstar-2F (Navigation System using Timing And Ranging) satellites are the fourth evolution stage of the second generation of the GPS satellites. Improvements included an extended design life of 12 years, faster processors with more memory, and a new civil signal on a third frequency.

Mission type: Navigation · Orbit: Medium Earth Orbit

Rocket: Delta IV M+(4,2) · Provider: United Launch Alliance