Presentation by Luc Tytgat, Strategy and Safety Management Director, EASA. Space 4 Rail Event - Gnss for aviation

1. Integrating GNSS within
another safety critical transport mode
Luc Tytgat, EASA
Director Strategy and Safety Management
TE.GEN.00409-001

2. Facts and figures
2

3. History
GPS offered civil use after KAL 007 shot down
ICAO: international aviation standard
EU: independent / autonomous standard satnav infrastructure
Not as sole mean of navigation
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4. GNSS
A European GPS?
A 2 steps approach (1999):
GNSS 1: EGNOS
GNSS 2: GALILEO
for European industry
for users
Hybrid navigation / positioning solutions
(on-board + satellite-based signals)
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5. Aviation quality requirements
Phases of flight
En Route
Terminal operations
Departure operations
Non-precision approach
Precision approach
Performance requirements
Horizontal/vertical accuracy
ex. 16m
Time to alert
ex. 6s.
Integrity
ex. 1 x 1x10-7 / hour
Availability
ex. 0,99999 of the time
Continuity
ex. 1-8x10-6 /15s.
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6. GNSS signal in space-performance requirements (ICAO)
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Typical Operation Accuracy
horizontal
95%
Accuracy
vertical
95%
Integrity Time-to-alert Continuity Availability
En-route 3.7 km
(2.0 NM)
N/A 1 – 1×10–7/h 5 min 1 – 1× 10–4/h
to 1 – 1×10–8/h
0.99 to
0.99999
En-route, Terminal 0.74 km
(0.4 NM)
N/A 1 – 1×10–7/h 15 s 1 – 1× 10–4/h
to 1 – 1×10–8/h
0.99 to
0.99999
Initial approach,
Intermediate
approach,
Non-precision
approach (NPA),
Departure
220 m
(720 ft)
N/A 1 – 1×10–7/h 10 s 1 – 1× 10–4/h
to 1 – 1×10–8/h
0.99 to
0.99999
Approach
operations with
vertical guidance
(APV-I)
16.0 m
(52 ft)
20 m
(66 ft)
1 – 2× 10–7
in any approach
10 s 1 – 8× 10–6
per 15 s
0.99 to
0.99999
Approach
operations with
vertical guidance
(APV-II)
16.0 m
(52 ft)
8.0 m
(26 ft)
1 – 2× 10–7
in any approach
6 s 1 – 8× 10–6
per 15 s
0.99 to
0.99999
Category I precision
approach
16.0 m
(52 ft)
6.0 m to 4.0 m
(20 ft to 13 ft)
1 – 2× 10–7
in any approach
6 s 1 – 8× 10–6
per 15 s
0.99 to
0.99999

7. Key features
Not depending on a single source
Multi-frequency
Multi-constellation
GPS/Galileo
Galileo and GPS: augmentented to reach level of
performance (ABAS, SBAS, GBAS)
Jamming and Spoofing
Traffic surveillance through ADS-B
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8. Consequences for air transport
Withdrawal of terrestrial navigation / surveillance systems
(Radar, landing systems, etc. ….)
Increase of infrastucture capacity
Regional standard localisation solutions
Funding by EU (cross-border solution)
Standardized users equipment (↘ costs)
Global markets
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9. Special feature
Search and rescue / distress tracking
Compatible with drones, helicopters, airport ground vehicles
EU owned infrastructure
EU oversight / certification of service provider
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10. Facts
600 runways / 150 airports
AIRBUS: fleet equipped with GNSS / EGNOS receiver
Business aviation: decision of French aviation authority
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11. Thank you for your attention
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