Transcript 1_SIRAJ_EGNOS

SBAS Implementation in the regions of
ACAC and ASECNA
Project with Community research funding
EGNOS System Definition and Benefits
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Summary of the activities
• Navigation based on GNSS
• Regional GNSS: SBAS
• EGNOS presentation
• Main Advantatges of procedures based on EGNOS
• Where to implement EGNOS procedures?
SIRAJ Final Workshop - Rabat 28th May 2012
Navigation based on GNSS
RAIM
ABAS
Airborne Based
Augmentation
System
Core
Constellations:
GPS
GLONASS
GALILEO (near Future)
AAIM RAIM
EGNOS
GNSS
Global Navigation
Satellite Services
SBAS
Satellite Based
Augmentation
System
GBAS
Ground Based
Augmentation
System
WAAS
MSAS
…
GBAS / LAAS
SIRAJ Final Workshop - Rabat 28th May 2012
Regional GNSS: SBAS
SBAS: Satellite Based Augmentation System
Systems today available for Aviation:
EGNOS: European SBAS
WAAS: USA and CANADA SBAS
MSAS: Japanese SBAS
Systems under development/analysis:
GAGAN: Indian SBAS (2014)
SACCSA: South American SBAS
SDCM: Russian and Chinese SBAS
SIRAJ Final Workshop - Rabat 28th May 2012
EGNOS presentation
EGNOS (the European SBAS) allow the
implementation of RNAV instrument
approach procedures down to LPV
minima (up to 250 ft above airport
elevation)
2013 new RIMS
Agadir (Morocco)
Abu Simbel (Egypt)
2014 new RIMS
Amman (Jordan) and
Tamanrasset (Algeria)
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SIRAJ Final Workshop - Rabat 28th May 2012
EGNOS presentation
EGNOS NPA Availability:
EGNOS NPA Availability is defined as the
percentage of samples in which the Horizontal
Protection
Level is below Alert Limit for NPA (HPL<556m)
over the total period.
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EGNOS APV Availability:
EGNOS APV-I Availability is defined here as
the percentage of epochs in a month in which
the Protection Level are below Alert Limits for
this APV-I service (HPL<40m and VPL<50m)
over the total period.
SIRAJ Final Workshop - Rabat 28th May 2012
Main advantatges of procedures
based on EGNOS
APV SBAS Advantages:
Aircraft Operators
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Optimised approach routing from various
arrival directions
Optimum descent profile
Engine-idle descents
Improved track keeping
Use of more flexible route and procedure
designs
Airports and Air Navigation
Service Providers
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Limited need for ground infrastructure
Can be implemented in areas where ILS
cannot be sited for terrain or obstacle
reasons
Can provide approaches to more runways
without additional infrastructure costs
Increase the usability of many airports
Leading to:
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Reduced fuel burn and noise
footprints
Reduced environmental impact
Reduced Radio Traffic (R/T)
Reduced controller and pilot
workload
Reduced delays, diversion and
cancellations due to bad
weather
Reduced costs
SIRAJ Final Workshop - Rabat 28th May 2012
Where to implement EGNOS procedures?
The identification of the most suitable airports for implementing APV procedures should take
into account the following aspects:
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Balance between airport traffic and its
infrastructure (see table)
Infrastructure (Navaids)
Airport Type
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Strategy of each airport (General
aviation flights, commercial airport, hub)
more than 10
Mpax/y
Medium Airports
between 2 and 8
Mpax/y
Small Airports
less than 2
Mpax/y
Interest of airlines and operators
Political wills, as the implementation of
new procedures have a direct impact to
the airport and its associated area
…in general, major benefits are
obtained by implementing APV in small
and medium airports without ILS or
only with one ILS installed.
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Big Airports
Recommended
As back-up
for the ILS
ILS in all RWY
ends
ILS and NPA
Only NPA
Non IFR
procedures
it depends on
airport strategy…
Highly
recommended
Essential
For NPA RWYs
SIRAJ Final Workshop - Rabat 28th May 2012
SBAS Implementation in the regions of
ACAC and ASECNA
Project with Community research funding
EGNOS System Definition and Benefits
9