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GAGAN Satellite Technology


Recently, the Prime Minister of India lauded Asia’s first demonstration of Performance-Based Navigation for helicopters for a flight from Juhu to Pune using GAGAN satellite technology.


GS III: Science and Technology

Dimensions of the Article:

  1. GAGAN Satellite Technology: GPS Aided GEO Augmented Navigation
  2. Performance-Based Navigation (PBN)

GAGAN Satellite Technology: GPS Aided GEO Augmented Navigation

  • GAGAN is jointly developed by ISRO (Indian Space Research Organisation) and the Airports Authority of India (AAI).
  • Utilizes a network of ground stations to enhance the GPS standard positioning service (SPS) navigation signal.
  • Provides necessary augmentations to enhance accuracy, availability, and integrity for reliable GPS navigation throughout all flight phases.
  • Enables users to depend on GPS for various aviation operations.
  • Enhances position reporting accuracy, contributing to improved Air Traffic Management (ATM).
  • Extends benefits to other modes of transportation, including maritime, highways, and railroads.
Space-Based Augmentation Systems:
  • GAGAN is one of the four Space-Based augmentation systems available globally.
  • Other systems include WAAS (US), EGNOS (Europe), and MSAS (Japan).

Performance-Based Navigation (PBN):

  • PBN concept specifies performance requirements for aircraft RNAV (Area Navigation) systems.
  • Focuses on accuracy, integrity, availability, continuity, and functionality for specific airspace operations.
  • Shifts from sensor-based to performance-based navigation.
  • Navigation specifications define the performance requirements and allowable navigation sensors and equipment.

-Source: The Hindu

March 2024