Global Positioning System satellites
E722101
Global Positioning System satellites are a constellation of Earth-orbiting spacecraft that provide precise positioning, navigation, and timing services worldwide.
All labels observed (3)
| Label | Occurrences |
|---|---|
| GPS III satellites | 1 |
| Global Positioning System satellites canonical | 1 |
| Navstar GPS satellites | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8264598 — 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: Global Positioning System satellites Context triple: [Delta II, notablePayload, Global Positioning System satellites]
-
A.
Global Navigation Satellite System Infrastructure
Global Navigation Satellite System Infrastructure is the worldwide network of satellites, ground stations, and control systems that enables precise positioning, navigation, and timing services for users across the globe.
-
B.
NavIC satellites
NavIC satellites are a constellation of Indian regional navigation spacecraft that provide accurate position, navigation, and timing services over India and surrounding areas.
-
C.
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.
-
D.
Iridium satellite system
The Iridium satellite system is a global network of low Earth orbit communication satellites that provides worldwide voice and data coverage, including for remote sensing platforms like Argo floats.
-
E.
Satellite-Based Augmentation Systems
Satellite-Based Augmentation Systems are regional or wide-area systems that enhance standard GPS signals to provide more accurate, reliable, and integrity-checked positioning for aviation and other safety-critical applications.
- 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: Global Positioning System satellites Target entity description: Global Positioning System satellites are a constellation of Earth-orbiting spacecraft that provide precise positioning, navigation, and timing services worldwide.
-
A.
Global Navigation Satellite System Infrastructure
Global Navigation Satellite System Infrastructure is the worldwide network of satellites, ground stations, and control systems that enables precise positioning, navigation, and timing services for users across the globe.
-
B.
NavIC satellites
NavIC satellites are a constellation of Indian regional navigation spacecraft that provide accurate position, navigation, and timing services over India and surrounding areas.
-
C.
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.
-
D.
Iridium satellite system
The Iridium satellite system is a global network of low Earth orbit communication satellites that provides worldwide voice and data coverage, including for remote sensing platforms like Argo floats.
-
E.
Satellite-Based Augmentation Systems
Satellite-Based Augmentation Systems are regional or wide-area systems that enhance standard GPS signals to provide more accurate, reliable, and integrity-checked positioning for aviation and other safety-critical applications.
- F. None of above. chosen
Statements (79)
| Predicate | Object |
|---|---|
| instanceOf |
artificial satellite system
ⓘ
navigation satellite constellation ⓘ |
| atomicClockType |
cesium atomic clock
NERFINISHED
ⓘ
rubidium atomic clock ⓘ |
| carryPayload | atomic clocks ⓘ |
| competesWith |
BeiDou
NERFINISHED
ⓘ
GLONASS NERFINISHED ⓘ Galileo NERFINISHED ⓘ |
| controlSegment | GPS Operational Control Segment NERFINISHED ⓘ |
| coordinateSystem | WGS 84 NERFINISHED ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| coverageArea | global ⓘ |
| designedLifetime |
15 years or more for GPS III
ⓘ
about 12 years for later blocks ⓘ about 7.5 years for early blocks ⓘ |
| enableTechnology |
GNSS receivers
ⓘ
satellite-based navigation receivers ⓘ smartphone GPS ⓘ |
| firstLaunchDate | 1978 ⓘ |
| frequencyBandUsed |
L1
ⓘ
L2 ⓘ L5 ⓘ |
| globalSystemType | Global Navigation Satellite System NERFINISHED ⓘ |
| groundControlLocation | Schriever Space Force Base NERFINISHED ⓘ |
| inclination | approximately 55 degrees ⓘ |
| initialBlock | Block I NERFINISHED ⓘ |
| launchVehicle |
Atlas V
NERFINISHED
ⓘ
Delta II NERFINISHED ⓘ Falcon 9 NERFINISHED ⓘ |
| maintainedBy | Space Delta 8 NERFINISHED ⓘ |
| minimumOperationalConstellationSize | 24 ⓘ |
| navigationMessageType |
almanac data
ⓘ
clock correction data ⓘ ephemeris data ⓘ |
| numberOfOrbitalPlanes | 6 ⓘ |
| operator |
Space Operations Command
NERFINISHED
ⓘ
United States Space Force NERFINISHED ⓘ |
| orbitalAltitude |
approximately 20200 kilometers
ⓘ
approximately 20200 km above Earth ⓘ |
| orbitalPeriod | approximately 12 hours ⓘ |
| orbitShape | nearly circular orbit ⓘ |
| orbitType | medium Earth orbit ⓘ |
| partOf | Global Positioning System NERFINISHED ⓘ |
| powerSource |
rechargeable batteries
ⓘ
solar panels ⓘ |
| primaryUse |
global navigation
ⓘ
navigation ⓘ positioning ⓘ timing ⓘ |
| provideAccuracy |
higher accuracy for authorized military users
ⓘ
meter-level accuracy for civilian users ⓘ |
| provideService |
PNT services
ⓘ
Positioning, Navigation, and Timing NERFINISHED ⓘ Precise Positioning Service NERFINISHED ⓘ Standard Positioning Service NERFINISHED ⓘ |
| provideTimeReference | Coordinated Universal Time NERFINISHED ⓘ |
| satelliteGeneration |
Block I
NERFINISHED
ⓘ
Block II NERFINISHED ⓘ Block IIA NERFINISHED ⓘ Block IIF NERFINISHED ⓘ Block IIR NERFINISHED ⓘ Block IIR-M NERFINISHED ⓘ GPS III NERFINISHED ⓘ |
| satellitesPerOrbitalPlane | at least 4 ⓘ |
| signalModulation | CDMA ⓘ |
| signalType | spread-spectrum radio signal ⓘ |
| timeStandard | GPS Time NERFINISHED ⓘ |
| typicalConstellationSize | around 31 active satellites ⓘ |
| usedFor |
aviation navigation
ⓘ
civilian navigation ⓘ financial transaction time-stamping ⓘ geodesy ⓘ land navigation ⓘ maritime navigation ⓘ military navigation ⓘ power grid synchronization ⓘ precision agriculture ⓘ surveying ⓘ telecommunications timing ⓘ |
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: Global Positioning System satellites Description of subject: Global Positioning System satellites are a constellation of Earth-orbiting spacecraft that provide precise positioning, navigation, and timing services worldwide.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Delta II
this entity surface form:
GPS III satellites
this entity surface form:
Navstar GPS satellites