GNSS Augmentation Systems

GNSS Augmentation

• Purpose: To improve the accuracy and reliability of Global Navigation Satellite System (GNSS) signals
• Methods:
  • Satellite-based augmentation (SBAS)
  • Ground-based augmentation (GBAS)
  • Combination of both
• Benefits:
  • Improved accuracy and integrity
  • Increased availability of GNSS signals
  • Enhanced safety and efficiency in aviation

EGNOS (European Geostationary Navigation Overlay System)

• A European SBAS system
• Comprises:
  • Three geostationary satellites
  • A network of ground stations
  • A control center
• Functions:
  • Corrects GNSS signal errors
  • Provides integrity information
  • Supports LPV (Localizer Performance with Vertical Guidance) approaches
• Benefits:
  • Enables precision approach and landing capabilities
  • Improves safety and efficiency in European airspace

SBAS (Satellite-Based Augmentation System)

• A generic term for satellite-based GNSS augmentation systems
• Characteristics:
  • Uses a network of satellites and ground stations to correct GNSS signals
  • Provides differential corrections and integrity information
  • Supports precision approach and landing capabilities
• Examples:
  • WAAS (Wide Area Augmentation System) in the US
  • EGNOS (European Geostationary Navigation Overlay System) in Europe
  • MSAS (MTSAT Satellite-based Augmentation System) in Japan

RNP AR (Required Navigation Performance Authorization Required)

• A type of performance-based navigation (PBN) procedure
• Requires aircraft to be equipped with advanced navigation systems, such as GNSS and SBAS
• Characteristics:
  • Provides precise lateral and vertical navigation
  • Enables curved flight paths and complex approach procedures
  • Requires authorization from air traffic control
• Benefits:
  • Increases safety and efficiency in complex airspace
  • Enables more precise and flexible flight routes

WAAS (Wide Area Augmentation System)

• A US-based SBAS system
• Comprises:
  • A network of satellites and ground stations
  • A control center
• Functions:
  • Corrects GNSS signal errors
  • Provides integrity information
  • Supports LPV (Localizer Performance with Vertical Guidance) approaches
• Benefits:
  • Enables precision approach and landing capabilities
  • Improves safety and efficiency in US airspace

GNSS Augmentation

• Purpose: Improve accuracy and reliability of Global Navigation Satellite System (GNSS) signals
• Methods: Satellite-based augmentation (SBAS), Ground-based augmentation (GBAS), Combination of both
• Benefits: Improved accuracy and integrity, Increased availability of GNSS signals, Enhanced safety and efficiency in aviation

EGNOS (European Geostationary Navigation Overlay System)

• A European SBAS system
• Comprises: Three geostationary satellites, A network of ground stations, A control center
• Functions: Corrects GNSS signal errors, Provides integrity information, Supports LPV (Localizer Performance with Vertical Guidance) approaches
• Benefits: Enables precision approach and landing capabilities, Improves safety and efficiency in European airspace

SBAS (Satellite-Based Augmentation System)

• A generic term for satellite-based GNSS augmentation systems
• Characteristics: Uses a network of satellites and ground stations to correct GNSS signals, Provides differential corrections and integrity information, Supports precision approach and landing capabilities
• Examples: WAAS (Wide Area Augmentation System) in the US, EGNOS (European Geostationary Navigation Overlay System) in Europe, MSAS (MTSAT Satellite-based Augmentation System) in Japan

RNP AR (Required Navigation Performance Authorization Required)

• A type of performance-based navigation (PBN) procedure
• Requires aircraft to be equipped with advanced navigation systems, such as GNSS and SBAS
• Characteristics: Provides precise lateral and vertical navigation, Enables curved flight paths and complex approach procedures, Requires authorization from air traffic control
• Benefits: Increases safety and efficiency in complex airspace, Enables more precise and flexible flight routes

WAAS (Wide Area Augmentation System)

• A US-based SBAS system
• Comprises: A network of satellites and ground stations, A control center
• Functions: Corrects GNSS signal errors, Provides integrity information, Supports LPV (Localizer Performance with Vertical Guidance) approaches
• Benefits: Enables precision approach and landing capabilities, Improves safety and efficiency in US airspace

Learn about the methods and benefits of GNSS augmentation systems, including satellite-based and ground-based augmentation, and their applications in aviation. Explore EGNOS, a European SBAS system.