Following successful completion of on-orbit testing, the U.S. Navy accepted the third Lockheed Martin-built Mobile User Objective System (MUOS) satellite.
Launched January 20, MUOS-3 is the latest addition to a network of orbiting satellites and relay ground stations that is revolutionizing secure communications for mobile military forces. Users with operational MUOS terminals can seamlessly connect around the globe, beyond line-of-sight, with new smartphone-like capabilities, including simultaneous and crystal-clear voice, video and mission data, on a high-speed Internet Protocol-based system.
«MUOS is a game-changer in communications for every branch of our military, which all have mobile users who will benefit from these new capabilities», said Iris Bombelyn, Lockheed Martin’s vice president for narrowband communications. «This latest satellite will expand the MUOS network’s coverage over more than three-quarters of the globe, including significantly more coverage north and south than the current legacy voice-only system».
With on-orbit testing complete, MUOS-3 is being relocated to its on-orbit operational slot in preparation for operational acceptance.
The MUOS network is expected to provide near global coverage before year-end. MUOS-1 and MUOS-2, launched respectively in 2012 and 2013, are already operational and providing high-quality voice communications. Lockheed Martin handed over the last of four required ground stations to the Navy in February. MUOS-4 is expected to launch later this year.
Communication Service Types
Voice: Conversational and recognition voice
Data: Low data rate telemetry, short digital messaging, imagery transfer, file transfer, electronic mail, remote computer access, remote sensor reception, sporadic messaging for distributed applications, video, video teleconferencing
Mixed Voice and Data Services: Mixed transport of voice and data
4 GEO satellites and an on-orbit spare. 16 WCDMA beams per satellite. Satellite carries MUOS WCDMA and legacy UHF SATCOM payloads
Access Type: WCDMA
Data Rates: Up to 384 kbps on the move
Bandwidth: Four 5-MHz carriers
Transport Network: IPv4 and IPv6 dual stack network
DoD Teleport: Portal to Defense Information Systems Network: DSN, SIPRNET, NIPRNET
Access Type: Legacy UHF SATCOM
Bandwidth: 17 25-kHz and 21 5-kHz channels