UCM AviationAviation Satellite Based Augmentation Systems

SBASSatellite Based Augmentation System (SBAS):– Augmentation of navigation satellite systems (GNSS).

Operational SBAS or Systems being built (beyond study):– WAAS (United States) (Operational)– EGNOS (Europe) (Operational)– MSAS (Japan) (Operational)– SDCM (Russia) (Non-operational)– GAGAN (India) (Non-operational)

SBAS Locations

WAASWide Area Augmentation System (WAAS)– United States– Augmentation of the global navigation satellite system

(GNSS).– Operational in 2003.

WAAS

EGNOSEuropean Geostationary Navigation Overlay Service– Official operations began in 2009.

Initial work is being conducted to extend EGNOS to South Africa.

EGNOS is interoperable with WAAS and MSAS.

EGNOS

MSASMulti-functional Satellite Augmentation System

– Japanese– Commissioned for aviation use in 2007.

QZSS – Quasi Zenith Satellite SystemDesigned for mobile devices within Japan.

MTSAT - Multifunctional Transport Satellites Weather and aviation control satellites used by Japan and Australia.

SDCMSystem of Differential Correction and Monitoring

– Russian– Currently launching satellites and building ground stations.

GAGANGPS aided geo augmented navigation (GAGAN):– Indian– Proposed/planned implementation, not currently

operational.– Operational in 2014 (planned).

The system will be compatible with other SBAS systems such as WAAS, EGNOS and MSAS providing seamless air navigation across regional boundaries.

GAGAN

GIA63W Notes:When checking SBAS on the G1000 you may have seen:

EGNOS MSAS WAAS

The G1000 is capable of receiving signals from all three SBAS systems.

G1000 Notes:WAAS Approaches:

– In order to fly a WAAS approach (LPV) you must verify/activate WAAS PRIOR TO LOADING the approach.

– Checking SBAS for WAAS selection after loading the approach will not enable a WAAS approach.

– The system cannot upgrade from LNAV to LPV after the approach has been loaded.