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.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| GPS III satellites | 1 |
| Navstar GPS satellites | 1 |
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 ⓘ |
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