Aviation

Aviation

Aviation

Aviation is the main driver for the Satellite-Based Augmentation System (SBAS) Ground service. SBAS ensures the accuracy, integrity, continuity of service and availability required to rely on Global Navigation Satellite System (GNSS) navigation for all phases of flight, from enroute to Category I equivalent approach (i.e. LPV200).
ADS-B will also benefit from SBAS as a position source with greater accuracy and integrity, particularly for airport surface movements.
Operational benefits include the provision of vertical guidance for all ends of the runway, compared to ILS (Instrument Landing Systems) which only provides guidance for one end at a time, and therefore increased landing safety, particularly in difficult locations and/or poor weather conditions, straight-in approaches with reduced minima down to 200 feet.
Other benefits include optimisation of ground-based navigational aids, route optimisation, advanced arrival, approach and departure procedures (PBN enabler), resulting in cost, fuel and carbon dioxide emission savings while ensuring profitability for Air Navigation Service Providers (ANSPs) and airport operators.

With the availability of SBAS SoL in Africa, 65% of African aerodromes that are not equipped with Navaids would benefit from SBAS. In addition, about 21% of airports/airfields equipped with non-precision navigation aids and about 14% equipped with ILS can benefit from SBAS as a primary or backup navigation aid.

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