GPS Corrections: SBAS and GBAS

What is SBAS and GBAS?

SBAS (Satellite Based Augmentation Systems) capability allows for accuracy to within three meters (or less) most of the time. StarFire even down to few centimeters all over the world. GBAS (Ground Based Augmentation Systems) are based on local correction broadcasts.

WAAS is available in North America, EGNOS in Europe, MSAS in Asia and GAGAN in India. StarFire works all over the world and is very accurate, typically 4.5 cm, but it requires more complex receivers.

All above mentioned SBAS systems use additional satellites to correct the GPS signal. Without corrective signals the GPS is less accurate. (Up to 150 meters.)

Additional Information:

• WAAS
• EGNOS
• SDCM
• BDSBAS
• MSAS/QZSS
• KASS
• AUS-NZ
• GAGAN
• NSAS
• ALCOMSAT
• StarFire (also C-Nav)

• dGPS
• LAAS

Related or Similar Systems:

• WAGE