1.GPS—(NA VSTAR)GlobalPositioningSystemistheUSownedconstellationofsatellitesthat
becamefullyoperationalin1995.GPSisthemostwidelyusedGNSSconstellationandtheterm
GPShasbecomesynonymouswithGNSS.
2.Galileo—EUownedsatelliteconstellationthatbecamefullyoperationalin2019.
3.BeiDou—ChineseRegionalNavigationSatelliteSystem,currentlyinitsthirdgeneration,became
fullyoperationalin2020.
4.GLONASS—(GLO GLO
GLO
balnayaNA NA
NA
avigatsionnayaS S
S
putnikovayaS S
S
istema"or“GlobalNavigation
SatelliteSystem”)istheRussianownedconstellationofsatellitesthathasofferedglobal
coveragesince2010.
Satellitebasedaugmentationsystems(SBAS)
Satellitebasedaugmentationsystems(SBAS)aresystemsthatareusedtocomplimentexisting
GNSSbyprovidingdifferentialcorrectionsthatimproveaGNSS’sattributessuchasaccuracy,
availabilityandreliability.
TheimagebelowshowsapproximatecoverageoftheSBASsavailableontheMFD:
1.AL COMSAT(Algeria)
2.AUS-NZ(Australia/NewZealand)
3.BDSBAS(China)
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