Linked from

The 98 pages that link to Global Positioning System, each with the reason it gives.

• Geographic information systemRelated: GPS observations can be collected and mapped within GIS.

• Special relativityBroader topic: Its clock calculations include special-relativistic corrections for satellite motion.

• GeodesyBroader topic: GPS turns geodetic satellite observations into widely used positions and timing.

• Celestial navigationCompared with: It automates positioning but depends on receiving satellite signals.

• Atomic clockRelated: Satellite timing relies on onboard atomic clocks to calculate signal travel times.

• Precision agricultureRelated: It assigns precise geographic coordinates to field measurements and machinery operations.

• Speed of lightRelated: Signal travel times become distance estimates using the propagation speed of light.

• Space RaceBroader topic: Military space research eventually produced a widely used civilian navigation service.

• TriangulationCompared with: GPS is often called triangulation, but it primarily determines position by trilateration.

• Earth’s rotationRelated: Precise positioning uses Earth-fixed coordinates whose orientation changes with Earth’s spin.

• Search and rescueRelated: It supports precise reporting of distress locations and navigation to search areas.

• VelocityRelated: Position fixes over time can be used to estimate velocity.

• Inertial navigation systemCompared with: GPS can correct inertial drift, but its signals may be blocked, jammed, or spoofed.

• LongitudeRelated: Receivers compute longitude from signals transmitted by orbiting satellites.

• SecondRelated: Position calculations depend on measuring signal travel times with extreme precision.

• SmartphoneRelated: Smartphones combine satellite signals with other sensors to estimate location.

• NavigationBroader topic: It supplies position estimates that can guide routes on land, at sea, and in the air.

• Geographic coordinate systemRelated: GPS receivers commonly report positions as latitude and longitude.

• Global Navigation Satellite SystemBroader topic: GPS is the best-known GNSS, but it is only one of several independent systems.

• Radio receiverRelated: GPS receivers derive location and time from signals sent by multiple satellites.

• SpacetimeRelated: Its clock corrections account for both special-relativistic motion and gravitational time dilation.

• Shortest path problemRelated: Road-navigation systems commonly apply shortest-path methods to map networks and travel costs.

• Radio spectrumRelated: GPS receivers use specific radio frequencies to obtain satellite measurements.

• Kalman filterRelated: Receivers use filtering to combine satellite measurements with motion and clock models.

• Proper timeRelated: Its satellite clocks require relativistic corrections to keep their proper-time rates synchronized with system time.

• Gravitational redshiftRelated: Satellite clock rates require gravitational corrections related to frequency shifts between orbital and ground potentials.

• Time zoneRelated: Its time signals support synchronization even though local civil time varies by zone.

• DisplacementRelated: Comparing successive position fixes yields an estimated displacement.

• Elastic-rebound theoryRelated: GPS records crustal strain accumulation and earthquake-related displacement.

• Gravitational time dilationBroader topic: GPS accounts for both gravitational and motion-related clock shifts to keep positions accurate.

• Marine navigationRelated: Satellite fixes give vessels precise positions without visual landmarks.

• Maritime navigationBroader topic: GPS made precise, continuous position fixes widely available, while creating dependence on signal integrity.

• PolarisCompared with: Satellite positioning replaces the star-based navigation for which Polaris was once a useful guide.

• IonosphereRelated: Ionospheric delay alters the travel time of its signals and introduces positioning errors.

• Radio waveRelated: Receivers determine location by comparing signals arriving from multiple satellites.

• Satellite constellationBroader topic: Its medium-Earth-orbit constellation supplies continuous navigation coverage through overlapping satellite signals.

• SextantCompared with: Satellite positioning replaces manual celestial fixes where signals and equipment are available.

• TrilaterationBroader topic: GPS receivers estimate their positions from ranges to satellites, usually with additional clock-bias correction.

• Coordinate reference systemRelated: GPS positions are commonly reported in a geodetic CRS based on WGS 84.

• Hydrogen maserRelated: Hydrogen masers have served as high-stability clocks on some GPS satellites.

• Inertial measurement unitCompared with: GPS can correct accumulated IMU position drift, but may fail indoors or under obstruction.

• Leap secondRelated: GPS time does not insert leap seconds, so its offset from UTC changes when UTC does.

• Precision bombingRelated: Satellite coordinates let guided bombs approach fixed targets without continuous visual tracking.

• Radio-frequency identificationCompared with: GPS estimates geographic location outdoors; RFID identifies objects within a reader's radio range.

• CompassCompared with: Satellite navigation can supply course information without a magnetic needle.

• Mobile phoneRelated: Phones use GPS for maps, location sharing, and location-aware services.

• PhysicsRelated: Its accuracy depends on relativistic corrections to satellite clocks.

• Satellite navigationBroader topic: GPS is the best-known operational example of satellite navigation.

• SynchronizationRelated: Precise timing among satellite signals enables receivers to calculate location.

• MeridianRelated: GPS positions are commonly expressed as latitude and longitude relative to geodetic meridians.