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Ground-Based Augmentation System

The Ground-Based Augmentation System (GBAS) is a safety-critical NAVAIDS system that augments GPS approach and landing.

The GBAS is expected to support all-weather Operations at CAT-Ⅰ/Ⅱ/Ⅲ. GBAS CAT-Ⅰ operation is a first step towards the more critical operations of CAT-Ⅱ/Ⅲ precision approach and landing. The operational benefits of GBAS are:

  • Flexible approach path reducing flying time, fuel consumption, CO2, etc.
  • Supporting all aircraft operations, surface movement, departure,approach and landing within the GBAS coverage
  • One GBAS Ground Station supports aircraft approach and landing to multiple runway ends It reduces installation and maintenance cost and installation site area

NEC GBAS features

  • Compliant with International Standard ICAO Annex 10 SARPs
  • Adaptability for any site conditions (including ionosphere, troposphere, multi-path)
  • Lightning protection by optical fiber lines for terrestrial networking
  • Anomalous-signal detection technique by high skill in data-mining technology
  • High-speed processor for Real Time processing of GPS signal
GBAS Reference Stations
GBAS Reference Stations
VDB (VHF Data Broadcast)
VDB (VHF Data Broadcast) Antenna
GBAS Processor
GBAS Processor
GBAS VDB (VHF Data Broadcast)
GBAS VDB (VHF Data Broadcast) Equipment
Air Traffic Control
Airport operations