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Mobile User Objective System
The Mobile User Objective System is a narrowband military communications satellite system that supports a worldwide, multi-Service population of users in the ultra high frequency band. The system provides increased communications capabilities to newer, smaller terminals while still supporting interoperability with legacy terminals. MUOS is designed to support users that require greater mobility, higher bit rates and improved operational availability.
==Overview==
The Mobile User Objective System (MUOS) is an Ultra High Frequency (UHF) (300 MHz to 3 GHz frequency range) SATCOM system, primarily serving the United States Department of Defense (DoD). International allies use is under consideration. The MUOS will replace the legacy UHF Follow-On (UFO) system before that system reaches its end of life to provide users with new capabilities and enhanced mobility, access, capacity, and quality of service. Intended primarily for mobile users (e.g. aerial and maritime platforms, ground vehicles, and dismounted soldiers), MUOS will extend users' voice, data, and video communications beyond their lines-of-sight.〔(Military Communications Satellite System Multiplies UHF Channel Capacity for Mobile Users ), a Mobile User Objective System (MUOS) design study.〕
MUOS is an array of geosynchronous〔(Geosynchronous Satellites for MUOS ) Samuel J. MacMullan, Christopher J. Karpinsky, Reuben E. Eaves, Andre R. Dion; M.I.T. Lincoln Laboratory, 1999.〕 satellites that will provide global satellite communications (SATCOM) narrowband connectivity for communications use by the United States at data rates up to 384kbit/s. The program will deliver five satellites, four ground stations, and a terrestrial transport network at a cost of $7,345.9M.
The Navy's Communications Satellite Program Office (PMW 146)〔(Fact Sheet, Navy Communications Satellite Programs ).〕 of the Program Executive Office (PEO) for Space Systems in San Diego is lead developer for the MUOS Program. Lockheed Martin is the Prime System Contractor and satellite designer for MUOS under U.S Navy Contract N00039-04-C-2009,〔(SPAWAR N0003904C2009 Contract Award Announcement ).〕〔(DoD Contract Awards for September 24, 2004 ).〕 which was announced September 24, 2004. Key subcontractors include General Dynamics (Ground Transport architecture), Boeing (Legacy UFO and portions of the WCDMA payload) and Harris (deployable mesh reflectors). Full on-orbit capability is expected by 2015.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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