WAAS
E141896
WAAS (Wide Area Augmentation System) is a satellite-based augmentation system developed by the FAA to improve the accuracy, integrity, and availability of GPS signals for aviation and other precision navigation applications in North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| WAAS canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1248869 — 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: WAAS Context triple: [GPS, canBeAugmentedBy, WAAS]
-
A.
WAS
WAS is the standard three-letter abbreviation used for the Washington Commanders NFL franchise.
-
B.
WAS
WAS is the station code for Washington, D.C.’s main intercity and commuter rail hub, Union Station.
-
C.
WAS
WAS is the standard three-letter abbreviation used for the NBA team Washington Wizards.
-
D.
AWOS-3
AWOS-3 is an Automated Weather Observing System configuration that provides continuous, real-time aviation weather data including altimeter setting, visibility, cloud height, temperature, dew point, and precipitation type.
-
E.
NWS
NWS is the stock ticker symbol for News Corporation, a global media and publishing company.
- 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: WAAS Target entity description: WAAS (Wide Area Augmentation System) is a satellite-based augmentation system developed by the FAA to improve the accuracy, integrity, and availability of GPS signals for aviation and other precision navigation applications in North America.
-
A.
WAS
WAS is the standard three-letter abbreviation used for the Washington Commanders NFL franchise.
-
B.
WAS
WAS is the station code for Washington, D.C.’s main intercity and commuter rail hub, Union Station.
-
C.
WAS
WAS is the standard three-letter abbreviation used for the NBA team Washington Wizards.
-
D.
AWOS-3
AWOS-3 is an Automated Weather Observing System configuration that provides continuous, real-time aviation weather data including altimeter setting, visibility, cloud height, temperature, dew point, and precipitation type.
-
E.
NWS
NWS is the stock ticker symbol for News Corporation, a global media and publishing company.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
navigation augmentation system
ⓘ
satellite-based augmentation system ⓘ |
| abbreviationFor |
Satellite-Based Augmentation Systems
ⓘ
surface form:
Wide Area Augmentation System
|
| accuracyLevel |
on the order of 1–2 meters horizontally
ⓘ
on the order of 2–3 meters vertically ⓘ |
| applicationDomain |
civil aviation
ⓘ
general aviation ⓘ land surveying ⓘ marine navigation ⓘ precision agriculture ⓘ |
| basedOn |
GPS
ⓘ
surface form:
Global Positioning System
|
| belongsToCategory |
Global Navigation Satellite System augmentation
ⓘ
Safety-of-life navigation system ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| developer | Federal Aviation Administration ⓘ |
| fullName |
Differential GPS
ⓘ
surface form:
Wide Area Augmentation System
|
| governingBody | United States Department of Transportation ⓘ |
| improves |
GPS accuracy
ⓘ
GPS availability ⓘ GPS integrity ⓘ |
| operator | Federal Aviation Administration ⓘ |
| primaryUse |
aviation navigation
ⓘ
en route navigation ⓘ precision approach guidance ⓘ |
| provides |
corrections for ionospheric delay
ⓘ
corrections for satellite clock errors ⓘ corrections for satellite orbit errors ⓘ integrity information ⓘ |
| purpose |
enable instrument flight procedures with vertical guidance
ⓘ
support safety-of-life aviation operations ⓘ |
| regionServed |
Canada
ⓘ
Mexico ⓘ North America ⓘ United States of America ⓘ
surface form:
United States
|
| signalType |
L1 frequency augmentation
ⓘ
L5 frequency augmentation ⓘ |
| similarTo |
EGNOS
ⓘ
GAGAN ⓘ MSAS ⓘ |
| standardizedBy | International Civil Aviation Organization ⓘ |
| supports |
approach with vertical guidance
ⓘ
en route navigation ⓘ localizer performance with vertical guidance ⓘ terminal area navigation ⓘ |
| uses |
geostationary satellites
ⓘ
ground reference stations ⓘ master stations ⓘ uplink stations ⓘ |
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: WAAS Description of subject: WAAS (Wide Area Augmentation System) is a satellite-based augmentation system developed by the FAA to improve the accuracy, integrity, and availability of GPS signals for aviation and other precision navigation applications in North America.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.