Differential GPS
E141898
Differential GPS is an enhanced positioning system that improves the accuracy of standard GPS signals by using ground-based reference stations to correct signal errors.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Differential GPS canonical | 1 |
| Wide Area Augmentation System | 1 |
| differential GNSS | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1248871 — 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: Differential GPS Context triple: [GPS, canBeAugmentedBy, Differential GPS]
-
A.
GPS
GPS (Global Positioning System) is a satellite-based navigation system that provides precise location and timing information to military and civilian users worldwide.
-
B.
Galileo satellite navigation system
The Galileo satellite navigation system is the European Union’s global navigation satellite system designed to provide highly accurate positioning and timing services worldwide as an independent alternative to GPS and other GNSS constellations.
-
C.
Continuously Operating Reference Stations network
The Continuously Operating Reference Stations (CORS) network is a nationwide system of permanent GPS/GNSS stations that provides precise positioning data for surveying, mapping, and geospatial applications.
-
D.
Positioning, Navigation, and Timing
Positioning, Navigation, and Timing is a U.S. Space Force mission area focused on providing precise location, navigation, and time-reference services—most notably through systems like GPS—to military and civilian users worldwide.
-
E.
Gee navigation system
The Gee navigation system was an early British radio navigation aid used during World War II to help Allied aircraft determine their position and improve bombing accuracy.
- 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: Differential GPS Target entity description: Differential GPS is an enhanced positioning system that improves the accuracy of standard GPS signals by using ground-based reference stations to correct signal errors.
-
A.
GPS
GPS (Global Positioning System) is a satellite-based navigation system that provides precise location and timing information to military and civilian users worldwide.
-
B.
Galileo satellite navigation system
The Galileo satellite navigation system is the European Union’s global navigation satellite system designed to provide highly accurate positioning and timing services worldwide as an independent alternative to GPS and other GNSS constellations.
-
C.
Continuously Operating Reference Stations network
The Continuously Operating Reference Stations (CORS) network is a nationwide system of permanent GPS/GNSS stations that provides precise positioning data for surveying, mapping, and geospatial applications.
-
D.
Positioning, Navigation, and Timing
Positioning, Navigation, and Timing is a U.S. Space Force mission area focused on providing precise location, navigation, and time-reference services—most notably through systems like GPS—to military and civilian users worldwide.
-
E.
Gee navigation system
The Gee navigation system was an early British radio navigation aid used during World War II to help Allied aircraft determine their position and improve bombing accuracy.
- F. None of above. chosen
Statements (54)
| Predicate | Object |
|---|---|
| instanceOf |
navigation technology
ⓘ
positioning system ⓘ satellite-based augmentation system ⓘ |
| aimsTo |
improve positioning accuracy
ⓘ
reduce GPS signal errors ⓘ |
| basedOn |
differential corrections
ⓘ
pseudorange corrections ⓘ |
| canAchieveAccuracy | decimeter level under good conditions ⓘ |
| canOperateAs | post-processed differential correction system ⓘ |
| correctionBroadcastMethods |
VHF or UHF radio
ⓘ
internet-based services ⓘ radio beacons ⓘ satellite links ⓘ |
| corrects |
ionospheric delay errors
ⓘ
multipath errors to some extent ⓘ orbital errors ⓘ receiver clock errors ⓘ satellite clock errors ⓘ tropospheric delay errors ⓘ |
| dependsOn | distance between rover and reference station ⓘ |
| developedFor | safety-critical navigation applications ⓘ |
| errorGrowthWithDistance | increases with baseline length ⓘ |
| hasComponent |
communication link
ⓘ
reference station ⓘ rover receiver ⓘ |
| improves |
horizontal position accuracy
ⓘ
vertical position accuracy ⓘ |
| operatesIn | real time ⓘ |
| referenceStationFunction |
broadcast correction data
ⓘ
compute GPS measurement errors ⓘ |
| referenceStationLocation | precisely surveyed position ⓘ |
| relatedTo |
EGNOS
ⓘ
surface form:
European Geostationary Navigation Overlay Service
Real-time Kinematic Positioning ⓘ
surface form:
Real-Time Kinematic positioning
Satellite-Based Augmentation Systems ⓘ Satellite-Based Augmentation Systems ⓘ
surface form:
Wide Area Augmentation System
|
| requires |
line-of-sight to GPS satellites
ⓘ
reliable communication channel for corrections ⓘ |
| roverFunction |
apply corrections to GPS measurements
ⓘ
receive correction data ⓘ |
| supports | integrity monitoring of GPS signals ⓘ |
| typicalAccuracy |
about 1 to 3 meters horizontally for standard DGPS
ⓘ
sub-meter level ⓘ |
| usedIn |
autonomous vehicle navigation
ⓘ
aviation navigation ⓘ construction machine guidance ⓘ harbor approach and docking ⓘ hydrographic surveying ⓘ land surveying ⓘ mapping and GIS data collection ⓘ marine navigation ⓘ precision agriculture ⓘ |
| uses |
GPS
ⓘ
surface form:
Global Positioning System
correction signals ⓘ ground-based reference 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: Differential GPS Description of subject: Differential GPS is an enhanced positioning system that improves the accuracy of standard GPS signals by using ground-based reference stations to correct signal errors.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
differential GNSS