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MILITARY COMMUNICATIONS
Lockheed Martin Completes Work on US Navy's Second MUOS Satellite
by Staff Writers
Sunnyvale CA (SPX) Jan 17, 2013


Prior to entering storage, the U.S. Navy's second Mobile User Objective System (MUOS) was paced through a serious of rigorous tests to ensure is performance and health throughout its on orbit life. Here, MUOS SV-2 completes testing in a Lockheed Martin anechoic test chamber to ensure the spacecraft's signals and interfaces work properly.

Lockheed Martin has completed required system testing on the second satellite in the U.S. Navy's Mobile User Objective System (MUOS), designated MUOS-2. The satellite has been placed in storage to await its scheduled launch date in July 2013.

The MUOS constellation will provide significantly improved and secure communications for mobile warfighters, including simultaneous voice, video and data services - similar to the capabilities experienced today with smart phones. The first MUOS satellite, launched February 24, and the associated ground system are currently providing legacy on orbit capability, followed by the launch of MUOS-2 in 2013. The five-satellite, global constellation is expected to achieve full operational capability in 2015.

"The joint U.S. Navy and Lockheed Martin MUOS team completed an efficient integration and test campaign of MUOS-2 and we look forward to delivering this critical satellite for launch," said Iris Bombelyn, vice president for the Lockheed Martin's Narrowband Communications mission area.

"As we continue to produce MUOS satellites, we expect to drive even greater efficiency and affordability into our operations."

In the spring of 2013, Lockheed Martin will remove the satellite from storage, perform final spacecraft component installations and conduct a final factory confidence test in Sunnyvale, Calif., prior to shipping MUOS-2 to Cape Canaveral Air Force Station, Fla., for its launch aboard an Atlas V rocket.

MUOS satellites are equipped with a Wideband Code Division Multiple Access (WCDMA) payload that provides a 16-fold increase in transmission throughput over the current Ultra High Frequency (UHF) satellite system. Lockheed Martin announced completion and delivery of the waveform last week.

Each MUOS satellite also includes a legacy UHF payload that is fully compatible with the current UHF Follow-on system and legacy terminals. This dual-payload design ensures a smooth transition to the cutting-edge WCDMA technology while the UFO system is phased out.

Lockheed Martin Space Systems, Sunnyvale, Calif., is the MUOS prime contractor and system integrator. The Navy's Program Executive Office for Space Systems, Chantilly, Va., and its Communications Satellite Program Office, San Diego, Calif., are responsible for the MUOS program.

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