The second satellite in the U.S. Navy's Mobile User Objective System (MUOS) program now has a new communications system module from Lockheed Martin.
Supporting ultra-high frequency (UHF) satellite communications (SATCOM), MUOS will provide assured communications, including simultaneous voice, video, and data, for mobile warfighters.
Designed and built by Lockheed Martin in Newtown, Pa., and delivered to the company's facilities in Sunnyvale, Calif., the module features a wideband code division multiple access payload that incorporates advanced technology to provide a 10-fold increase over legacy UHF SATCOM in the number and capacity of satellite links, Lockheed Martin officials say. These technologies will support new mobile satellite terminals that are under development for the Joint Tactical Radio System (JTRS).
The module also includes a legacy UHF payload provided by Boeing Defense, Space and Security in El Segundo, Calif., that is compatible with more than 10,000 deployed UHF SATCOM terminals that will transition to MUOS as existing UHF Follow-on (UFO) satellites reach the end of their on-orbit life.
Over the next few months, Lockheed Martin will complete the final test verification phase on the system module, integrate it with the spacecraft propulsion core module and other space vehicle components, and begin environmental and acceptance testing of the fully integrated space vehicle.
The first MUOS satellite has completed Passive Intermodulation testing and is currently undergoing electromagnetic interference/electromagnetic compatibility testing in support of the spacecraft Level Baseline Integrated System Test (BIST). BIST testing will characterize the overall performance of the fully integrated MUOS
spacecraft and establish a performance baseline prior to entering the environmental test phase, which includes acoustic and thermal vacuum testing.
The first MUOS satellite, along with the associated ground systemprovided by General Dynamics C4 Systems, Scottsdale, Ariz., is scheduled for on-orbit hand-over to the Navy in 2011.
The Navy Advanced Narrowband System (ANS)/Mobile User Objective System (MUOS) is being developed as a replacement to the UFO constellatio. It will provide global SATCOM narrowband (64kpbs and below) connectivity for voice, video and data for U.S. and Allied services.
The Mobile User Objective System (MUOS) will be a network of DOD-controlled satellites and associated ground facilities providing narrowband BLOS communication services for a worldwide population of mobile and fixed site terminal users. The ground control segment will feature a distributed, government-controlled, precedence and priority based resource management system that will be responsive to the communications requirements of commanders with apportioned resources.
Lockheed Martin Space Systems in Sunnyvale, Calif., is the MUOS prime contractor and system integrator. The Navy's Program Executive Office for Space Systems in Chantilly, Va., and its Communications Satellite Program Office in San Diego are responsible for the MUOS program.
