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GBAS

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:

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  • 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
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GBAS Reference Stations
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VDB (VHF Data Broadcast) Antenna
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GBAS Processor
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GBAS VDB (VHF Data Broadcast) Equipment
Communications
Navigation
Surveillance
Air Traffic Control