MUOS military communications satellites

E786507

MUOS satellite U.S. Navy satellite communications system military communications satellite system

MUOS military communications satellites are a U.S. Navy narrowband tactical satellite communications system designed to provide secure, smartphone-like voice and data connectivity to mobile military forces worldwide.

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All labels observed (7)

Label	Occurrences
MUOS-1	2
MUOS military communications satellites canonical	1
MUOS-2	1
MUOS-3	1
MUOS-4	1
MUOS-5	1
Overwatch satellite communications system	1

How this entity was disambiguated

This entity first appeared as the object of triple T9232050 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: MUOS military communications satellites
Context triple: [Lockheed Martin Space, notableProject, MUOS military communications satellites]

A. Molniya communications satellites
Molniya communications satellites are Soviet/Russian spacecraft placed in highly elliptical Molniya orbits to provide long-duration communications coverage over high-latitude regions such as northern Russia.
B. Hughes Syncom communications satellites
The Hughes Syncom communications satellites were pioneering early geosynchronous communications satellites developed by Hughes Aircraft Company that helped demonstrate and establish the feasibility of global satellite communications.
C. SBS-4 communications satellite
The SBS-4 communications satellite was a commercial telecommunications spacecraft operated by Satellite Business Systems to provide business-oriented communication services in North America.
D. ANIK C2 communications satellite
ANIK C2 is a Canadian commercial communications satellite used to provide telecommunications and broadcasting services.
E. Tracking and Data Relay Satellite-B
Tracking and Data Relay Satellite-B was a NASA communications satellite intended to relay data between spacecraft in low Earth orbit and ground stations as part of the Tracking and Data Relay Satellite System (TDRSS).
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: MUOS military communications satellites
Target entity description: MUOS military communications satellites are a U.S. Navy narrowband tactical satellite communications system designed to provide secure, smartphone-like voice and data connectivity to mobile military forces worldwide.

A. Molniya communications satellites
Molniya communications satellites are Soviet/Russian spacecraft placed in highly elliptical Molniya orbits to provide long-duration communications coverage over high-latitude regions such as northern Russia.
B. Hughes Syncom communications satellites
The Hughes Syncom communications satellites were pioneering early geosynchronous communications satellites developed by Hughes Aircraft Company that helped demonstrate and establish the feasibility of global satellite communications.
C. SBS-4 communications satellite
The SBS-4 communications satellite was a commercial telecommunications spacecraft operated by Satellite Business Systems to provide business-oriented communication services in North America.
D. ANIK C2 communications satellite
ANIK C2 is a Canadian commercial communications satellite used to provide telecommunications and broadcasting services.
E. Tracking and Data Relay Satellite-B
Tracking and Data Relay Satellite-B was a NASA communications satellite intended to relay data between spacecraft in low Earth orbit and ground stations as part of the Tracking and Data Relay Satellite System (TDRSS).
F. None of above. chosen

Statements (47)

Predicate	Object
instanceOf	MUOS satellite ⓘ MUOS satellite ⓘ MUOS satellite ⓘ MUOS satellite ⓘ MUOS satellite ⓘ U.S. Navy satellite communications system ⓘ military communications satellite system ⓘ
constellationSize	5 satellites ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
coverage	global ⓘ
designedFor	mobile military forces ⓘ
designedToOperateIn	austere environments ⓘ contested electromagnetic environments ⓘ
firstLaunchDate	2012-02-24 ⓘ
firstSatelliteName	MUOS-1 ⓘ linked to: MUOS military communications satellites
frequencyBand	UHF ⓘ
fullName	Mobile User Objective System ⓘ
groundControlLocation	Naval Computer and Telecommunications Area Master Station Atlantic ⓘ Naval Computer and Telecommunications Area Master Station Pacific ⓘ
launchVehicle	Atlas V 551 ⓘ
numberOfOnOrbitSpareSatellites	1 ⓘ
numberOfOperationalSatellites	4 ⓘ
operator	United States Navy ⓘ
orbitType	geosynchronous orbit ⓘ
primeContractor	Lockheed Martin ⓘ
programManager	Program Executive Office Space Systems, U.S. Navy ⓘ
providesCapabilitySimilarTo	smartphone-like connectivity ⓘ
providesServiceType	data ⓘ voice ⓘ
purpose	narrowband tactical satellite communications ⓘ secure data communications ⓘ secure voice communications ⓘ
replaces	UHF Follow-On system ⓘ
securityFeature	end-to-end encryption ⓘ
segment	ground segment ⓘ space segment ⓘ user segment ⓘ
spacecraftBus	Lockheed Martin A2100 bus ⓘ linked to: Lockheed Martin A2100-derived bus
successorTo	Legacy UHF SATCOM systems ⓘ
supportsService	beyond line-of-sight communications ⓘ on-the-move communications ⓘ
supportsUserCommunity	U.S. Department of Defense ⓘ linked to: Department of Defense allied military forces ⓘ
userTerminalType	airborne terminals ⓘ portable terminals ⓘ shipboard terminals ⓘ vehicular terminals ⓘ

How these facts were elicited