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.
Delta II is an American space launch system developed by McDonnell Douglas, now part of the Delta rocket family operated by United Launch Alliance. With more than 150 missions and a nearly perfect track record, Delta II has established itself as one of the most successful orbital launch systems.
See DetailsUnited Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
INFO WIKISynthetic aperture radar Earth observation satellite for Japanese Earth imaging company iQPS.
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
NS-34 is the 14th crewed flight for the New Shepard program and the 34th in its history.
SpaceX Crew-11 is the eleventh crewed operational flight of a Crew Dragon spacecraft to the International Space Station as part of NASA's Commercial …
A batch of 19 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Chinese built Earth observation satellite for Pakistan’s SUPARCO (Space & Upper Atmosphere Research Commission).
The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will use advanced radar imaging to map the elevation of Earth's land and ice masses 4 to …
A batch of 9 Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group.…
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.