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 WIKIThe ViaSat-3 is a series of three Ka-band satellites is expected to provide vastly superior capabilities in terms of service speed and flexibility fo…
Second flight of Blue Origin's New Glenn launch vehicle carrying the Escape and Plasma Acceleration and Dynamics Explorers (EscaPADE), a dual-spacecr…
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Earth Observation satellite for the Jilin-1 commercial constellation. Other payloads: * Jilin-1 Platform-02A-04 * Zhongbei University-1
A batch of Low Earth Orbit communication satellites for the Chinese state owned SatNet constellation operated by the China Satellite Network Group. …
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
2 satellites built by the China Aerospace Science and Industry Corporation (CASIC) for testing operations of Very Low Earth Orbit (VLEO) satellites f…
3 Chinese satellites reported to be for "orbital technological testing" purposes. Actual usage not known.
A batch of 28 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
A batch of 29 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.