MSAS
E586561
MSAS (MTSAT Satellite-based Augmentation System) is Japan’s satellite-based augmentation system that enhances GPS accuracy and reliability for aviation and other navigation applications in the Asia-Pacific region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| MSAS canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T6327565 — 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: MSAS Context triple: [WAAS, similarTo, MSAS]
-
A.
MSA
MSA is the standardized, literary form of Arabic used in formal writing, media, education, and official communication across the Arab world.
-
B.
MSA
MSA is the common abbreviation for the Master Settlement Agreement, a landmark 1998 legal settlement between major U.S. tobacco companies and state attorneys general that reshaped tobacco advertising and funded public health initiatives.
-
C.
MSA
MSA is the commonly used abbreviation for the Magnuson–Stevens Fishery Conservation and Management Act, the primary law governing marine fisheries management in U.S. federal waters.
-
D.
MSA
MSA is a common abbreviation for a metropolitan statistical area, a region defined by the U.S. Office of Management and Budget for statistical and demographic analysis.
-
E.
MSA
MSA is the abbreviation commonly used for a Microsoft account, the unified login system for accessing Microsoft's online services and products.
- 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: MSAS Target entity description: MSAS (MTSAT Satellite-based Augmentation System) is Japan’s satellite-based augmentation system that enhances GPS accuracy and reliability for aviation and other navigation applications in the Asia-Pacific region.
-
A.
MSA
MSA is the standardized, literary form of Arabic used in formal writing, media, education, and official communication across the Arab world.
-
B.
MSA
MSA is the common abbreviation for the Master Settlement Agreement, a landmark 1998 legal settlement between major U.S. tobacco companies and state attorneys general that reshaped tobacco advertising and funded public health initiatives.
-
C.
MSA
MSA is a common abbreviation for a metropolitan statistical area, a region defined by the U.S. Office of Management and Budget for statistical and demographic analysis.
-
D.
MSA
MSA is the abbreviation commonly used for a Microsoft account, the unified login system for accessing Microsoft's online services and products.
-
E.
MSA
MSA is the commonly used abbreviation for the Magnuson–Stevens Fishery Conservation and Management Act, the primary law governing marine fisheries management in U.S. federal waters.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
SBAS
ⓘ
satellite-based augmentation system ⓘ |
| abbreviation | MSAS ⓘ |
| applicationDomain |
civil aviation
ⓘ
land navigation ⓘ maritime navigation ⓘ |
| basedOnSatelliteSystem | MTSAT ⓘ |
| country | Japan ⓘ |
| developedBy | Japan Civil Aviation Bureau ⓘ |
| frequencyBand | L1 ⓘ |
| fullName |
MTSAT Satellite-based Augmentation System
ⓘ
linked to:
Satellite-Based Augmentation Systems
|
| groundSegment |
master control stations
ⓘ
monitoring stations ⓘ uplink stations ⓘ |
| improves |
GPS accuracy
ⓘ
GPS integrity ⓘ GPS reliability ⓘ |
| operator |
Japan Civil Aviation Bureau
ⓘ
Ministry of Land, Infrastructure, Transport and Tourism of Japan ⓘ |
| primaryUse |
air traffic management
ⓘ
aviation navigation ⓘ safety-of-life navigation services ⓘ |
| providesServiceType |
augmentation of GPS signals
ⓘ
differential corrections ⓘ integrity monitoring ⓘ ionospheric delay corrections ⓘ |
| purpose |
to enhance safety and efficiency of air navigation in the region
ⓘ
to support en-route, terminal, and approach navigation ⓘ |
| regionServed |
Asia-Pacific
ⓘ
East Asia ⓘ |
| serviceArea |
Japanese airspace
ⓘ
Western Pacific Ocean region ⓘ
linked to:
western Pacific Ocean
parts of East Asia ⓘ |
| serviceStatus | operational ⓘ |
| serviceType | wide-area differential GPS ⓘ |
| signalType | GPS L1 C/A compatible augmentation signal ⓘ |
| similarTo |
EGNOS
ⓘ
GAGAN ⓘ SDCM ⓘ WAAS ⓘ |
| spaceSegment | geostationary satellites ⓘ |
| standardCompliance |
ICAO SARPs for SBAS
ⓘ
linked to:
Satellite-Based Augmentation Systems
|
| supportsSystem |
Global Positioning System
ⓘ
linked to:
GPS
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: MSAS Description of subject: MSAS (MTSAT Satellite-based Augmentation System) is Japan’s satellite-based augmentation system that enhances GPS accuracy and reliability for aviation and other navigation applications in the Asia-Pacific region.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.