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GAGAN – Adoption within Asia Pacific Region Plan/Opportunities. India. APV 1 250 ft DH 50m VAL, 40m HAL. GAGAN Expands Satellite-Based Civil Navigation. Background. GAGAN achieved RNP 0.1 certification in December 2013 Type 2 message will be available in February 2014

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250 ft DH

50m VAL, 40m HAL

GAGAN Expands Satellite-Based Civil Navigation


GAGAN achieved RNP 0.1 certification in December 2013

  • Type 2 message will be available in February 2014
  • GAGAN signals available in Indian airspace for en route navigation and non-precision approaches

GAGAN system can be expanded in the region with additional sites

  • Software is designed to accommodate up to 45 reference stations (15 currently)
  • Place single string reference station at selected location
  • Collect and analyze data from site and concatenate to GAGAN data
  • Determine system performance improvement prior to site installation/integration
expansion study for gagan east asia
Expansion Study for GAGAN East Asia

2006 December 5

2010 March 22

2010 April 26


LPV 200


Ionospheric activity in the equatorial region

< 50%

>= 95%

= 100%

>= 99%

GAGAN Expansion Benefits
  • SBAS expansion and growth
    • Preliminary analysis to add sites in neighboring countries show improved performance
  • Economies are eager to collaborate
      • GAGAN service can be leased to neighboring countries
      • SBAS enables meeting ICAO Performance Based Navigation requirement (by 2016)
        • Aircraft RNP and RNAV systems performance requirements be defined in term of accuracy, integrity, availability, continuity and functionality of a particular airspace.
    • Low cost solution to attain SBAS capabilities; available GEOs, processing & uplink stations
  • APEC GNSS 2011 Meeting Initiatives –
    • SBAS regional expansion
      • FAA charter to expand SBAS globally
      • Raytheon continues to support the FAA on the charter
    • Equatorial Region Solar Max Study
      • ICAO issued Standards for solar max data collection
      • ICAO initiative to standardize data collection – data can be shared among countries
  • GAGAN is the only SBAS system that has enhanced algorithm specific for equatorial region
sbas benefits
SBAS Benefits
  • Efficiency
    • Enables optimum routes independent of ground navaids.
    • Low incremental cost to expand regional system into new areas.
    • No new equipment required at airports to benefit from SBAS.
    • Reduces navigation system operating costs.
    • All systems are ICAO compliant, thus one aviation receiver works with GAGAN, EGNOS, MSAS and WAAS.
  • Economic Growth
    • Makes all weather air services available to more communities.
    • SBAS signal is also compatible with non-aviation receivers.
    • Several million SBAS capable receivers currently in use.
    • Enables many new multimodal precise navigation applications.
sbas benefits1

SBAS provides other countries with a sovereign means to monitor GPS.

Improved situational awareness via low cost SBAS capable avionics. Nominal vertical accuracy is less than 2m(95%).

SBAS 3D precision guidance can reduce landing accidents 7-fold.*

Higher Accuracy, integrity, continuity and availability for both navigation and ADS-B surveillance.

SBAS provides seven 9’s of integrity (probability of a hazard 1 in 10 million per approach).

SBAS Benefits
  • Capacity
    • Improves availability of RNP RNAV routes, enabling safe reduction in aircraft spacing.
    • Offloads major airports by providing all weather operations at secondary airports.
    • Covers all routes and airports within a region – not limited by VHF broadcast station range.

*Flight Safety Foundation, Flight Safety Digest, May-Jun 2003

GAGAN INRES data for
  • Estimating Indian plate movements velocity
  • GCPL Network ( Ground Control Point Network )
  • Station Coordinate estimation, Update GCPL network
  • Demonstrated rapid GCP collection using GAGAN SBAS signal with an accuracy of better than 1m with signal with an accuracy of better than 1m with observation time of 10min
  • Densification of GCPs through GCPL Ph3 project for gpj future high resolution Cartographic mission
  • Integrating GAGAN SBAS data with GIS for navigational litiapplications
  • Atmospheric studies –Tropousing INRES data GeoscienceGroupwillusethedataforearthquake
  • GeoscienceGroup will use the data for earthquake precursor study 27/01/2014