Delta II | GPS IIR-15(M)

Launch Provider & Rocket

• Provider: United States Air Force (Government)
• Rocket: Delta II 7925-9.5 — Delta family

Mission

The GPS-IIR replenishment satellites are produced by General Electric Astrospace (later Martin Marietta and Lockheed Missiles & Space) under a contract issued in 1989, which included 21 satellites based on the commercial AS-4000 bus. These provided improved navigation accuracy and longer autonomous satellite operation than earlier model GPS satellites. The satellites were three-axis stabilized and operated at downlink frequencies of 1572.42 MHz and 1227.6 MHz (L-Band) and 2227.5 MHz (S-Band). Lockheed was responsible for launch and flight operations support of the GPS-IIR through 2006.

• Type: Navigation
• Orbit: Medium Earth Orbit (MEO)

Launch Site

• Pad: Space Launch Complex 17A
• Location: Cape Canaveral SFS, FL, USA
• View on map

Program

• Global Positioning System — The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radio navigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite systems (GNSS) that provide geolocation and time information to a GPS receiver anywhere on or near the Earth where there is an unobstructed line of sight to four or more GPS satellites. (Wikipedia)