Mobile User Objective Sys (MUOS)
Abstract
Mobile User Objective System (MUOS) provides a worldwide, multi-service population of mobile and fixed-site terminal users with Ultra High Frequency (UHF) Narrowband, beyond line of sight satellite communications (SATCOM). MUOS significantly increases performance and capacity in support of critical Combatant Command SATCOM priorities. MUOS is the replacement system for the UHF Follow-on (UFO) system, which is currently beyond its design life. MUOS consists of Space, Ground, and User Entry Segments. The Space Segment consists of 5 geosynchronous satellites, one which is an on-orbit spare, and provides both a legacy UHF payload, which is backward compatible with UFO, and a Wideband Code Division Multiple Access (WCDMA) payload, which provides 3G cellular-like capability. The Ground Segment consists of four world-wide Radio Access Facilities (RAFs) and two satellite control facilities. Each RAF includes three 60 ft. antennas, and numerous racks of equipment. The RAF in Hawaii includes a Network Management Facility (NMF). The RAFs in Hawaii and Virginia each include a Switching Facility (SF). The User Entry Segment consists of the MUOS waveform that is ultimately integrated into MUOS-capable terminals. The MUOS legacy capability has been in operational use since 2012, and the WCDMA capability transitioned to Early Combatant Command Use in July 2016. In addition to providing UHF SATCOM for the Department of Defense, the Navy has the overall responsibility to deliver the End-to-End MUOS capability to the warfighter. This responsibility involves systems engineering, integration, and test management of all MUOS system of system activities. The FY20 program funds system optimization and modernization to address the dynamic, worldwide electromagnetic and cybersecurity environment in which MUOS operates. Efforts include technical analyses and engineering efforts for rapid technology insertion, and necessary changes requested by the warfighter and radio program offices to align end-to-end MUOS capabilities with warfighter missions. These changes include: software improvements for faster radio start-up and connection to the MUOS system; and software changes to allow end users to move radio profile information from one radio to another. Funds also support integration of the MUOS waveform into MUOS-capable terminals and the subsequent terminal certification testing. Funds are required for completion of Multi-Service Operational Test and Evaluation-2B (MOT&E-2B) activities in order to achieve Full Operational Capability (FOC) and deliver the End-to-End MUOS capability to the warfighter.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2020
- Source ID
- 2472_1203109N_7_1319_PB_2020
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