GPS space segment
E528516
The GPS space segment is the constellation of orbiting satellites that continuously transmit precise timing and positioning signals to users on and near Earth.
Observed surface forms (3)
| Surface form | Occurrences |
|---|---|
| GPS Block IIF satellites | 1 |
| GPS Block III satellites | 1 |
| GPS Block IIR-M satellites | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
component of Global Positioning System
ⓘ
satellite constellation ⓘ |
| alsoKnownAs | GPS satellite constellation NERFINISHED ⓘ |
| broadcasts |
almanac data
ⓘ
navigation message ⓘ satellite clock data ⓘ satellite ephemeris data ⓘ |
| consistsOf | GPS satellites ⓘ |
| controlledFrom | GPS control segment NERFINISHED ⓘ |
| covers |
global Earth surface
ⓘ
near-Earth space ⓘ |
| designedFor | continuous global coverage ⓘ |
| developedBy | United States Department of Defense NERFINISHED ⓘ |
| ensures | at least four satellites in view from most points on Earth ⓘ |
| hasComponent |
operational GPS satellites
ⓘ
spare GPS satellites ⓘ |
| hasNominalSize | 24 satellites ⓘ |
| hasOrbitalAltitude | about 20,200 kilometers ⓘ |
| hasOrbitalInclination | about 55 degrees ⓘ |
| hasOrbitalPeriod | about 12 hours sidereal ⓘ |
| hasOrbitalPlaneCount | 6 orbital planes ⓘ |
| hasOrbitType | medium Earth orbit ⓘ |
| hasTypicalSize | 24 to 32 satellites ⓘ |
| includesGeneration |
Block IIF satellites
ⓘ
Block IIR satellites ⓘ Block IIR-M satellites NERFINISHED ⓘ GPS III satellites NERFINISHED ⓘ |
| initialDeploymentStart | late 1970s ⓘ |
| operatedBy | United States Space Force NERFINISHED ⓘ |
| operatedFor | United States Space Force Space Operations Command NERFINISHED ⓘ |
| partOf | Global Positioning System NERFINISHED ⓘ |
| primaryFunction | provide precise positioning, navigation, and timing to users ⓘ |
| provides |
navigation signals
ⓘ
positioning signals ⓘ timing signals ⓘ |
| reachedFullOperationalCapability | 1995 ⓘ |
| servesUsers |
aviation navigation users
ⓘ
civilian users worldwide ⓘ land navigation users ⓘ maritime navigation users ⓘ military users worldwide ⓘ |
| supportsService |
Precise Positioning Service
NERFINISHED
ⓘ
Standard Positioning Service NERFINISHED ⓘ civil GPS service ⓘ military GPS service ⓘ |
| transmitsOn |
L1 frequency
ⓘ
L2 frequency ⓘ L5 frequency ⓘ |
| usesReferenceFrame | WGS 84 NERFINISHED ⓘ |
| usesTimeStandard | GPS Time NERFINISHED ⓘ |
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
GPS Block IIR-M satellites
this entity surface form:
GPS Block IIF satellites
this entity surface form:
GPS Block III satellites