v t e Satellite navigation systems
Operational	BeiDou DORIS Galileo GLONASS GPS / NavStar IRNSS / NAVIC
Historical	BDS / BeiDou-1 Transit Timation Tsiklon
GNSS augmentation	EGNOS GAGAN GPS·C (retired) JPALS LAAS MSAS NTRIP QZSS / Michibiki SouthPAN StarFire WAAS SDCM
Related topics	GNSS reflectometry Kalman filter United Kingdom Global Navigation Satellite System Wavelet

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