Boeing Defense, Space & Security2010-05-31 15:24:12

Boeing GPS IIF-1 Satellite Sends 1st Signals from Space

Boeing [NYSE: BA] has acquired the first on-orbit signals from the Global Positioning System (GPS) IIF-1 satellite, the inaugural spacecraft in a 12-satellite constellation that the company is building for the U.S. Air Force. The signals indicate that the spacecraft bus is functioning normally and ready to begin orbital maneuvers and operational testing.

A United Launch Alliance Delta IV rocket launched the GPS IIF-1 satellite at 11 p.m. Eastern time on May 27 from Cape Canaveral Air Force Station. At 2:33 a.m., the satellite separated from the rocket's upper stage, and a ground station on Diego Garcia in the Indian Ocean received the first signals from the newest member of the Air Force's GPS satellite constellation. The Air Force 19th Space Operations Squadron and Boeing's Mission Operations Support Center in El Segundo, Calif., confirmed that the satellite is healthy. GPS signals from the spacecraft payload will be turned on for test purposes in the coming weeks.

GPS is the U.S. Department of Defense's largest satellite constellation, with 30 spacecraft on orbit. The GPS IIF satellites will provide more precise and powerful signals, a longer design life, and many other benefits to nearly 1 billion civilian and military users worldwide.

"The inaugural launch of the GPS IIF-1 is a milestone in Boeing's 30 years of support to the Air Force that goes back to the first days of this program," said Craig Cooning, vice president and general manager, Boeing Space and Intelligence Systems. "The new GPS IIF satellites bring key improvements, including a more jam-resistant military signal, a new civil signal to enhance commercial aviation and search-and-rescue operations, and significantly improved signal accuracy as more of these new satellites go into operation."

The GPS IIF-1 satellite will undergo months of on-orbit tests, including functional testing of its payloads and end-to-end system testing to verify operability with older GPS satellites, ground receivers, and the ground control system.

Boeing has production of the next 11 GPS IIF satellites well under way as it implements an innovative pulse-line manufacturing approach that will help deliver the satellite fleet on schedule. Adapted from Boeing aircraft and helicopter assembly lines, the Boeing GPS IIF pulse line efficiently moves satellites under development from one work area to the next in a steady, pulse-like rhythm. The second GPS IIF satellite is scheduled for launch later this year.

Boeing's legacy with GPS includes development of the current GPS ground control infrastructure, the Operational Control Segment (OCS), which has supported an expanding set of GPS services and capabilities since 2007. Boeing also is a member of the Raytheon team that recently won a contract to build the next version of the ground segment, which will support current and future GPS satellites.

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