1. Presentation to US Space-Based PNT Advisory Board
4 October 2007
GBAS Cat-1 Sydney
GRAS
Keith McPherson
Manager GNSS
Airservices Australia

2. GBAS Program Overview Honeywell awarded FAA LAAS Program
Full scale GBAS development started 2006
Certification process underway
Red label systems March 2008
Certified production systems in late 2008
Normal
Not Available
Test
Service Alert
Silence
Honeywell
SLS
4000
The new SLS 4000

3. 3

4. N The “Hook” at Sydney airport extending into Botany Bay N
GPS Reference Receiver Antennas
VHF Data Link Antenna
Sydney GBAS Operations started Nov 06
QANTAS:
First B737-NGs with operational GBAS Cat-I
First full fleet fitment of GLS (737 fleet)
Lead customer for GLS on A-380s
AIRBUS:
First A-380 used Sydney GBAS Cat-I 6-8 Jun 07
GLS Facility Shelter
Overview of the Sydney site, out on the hook that extends into Botany Bay. N

5. All 6 Runways Programmed
GBAS Cat-1 Sydney
All 6 Runways Programmed
And Being Used

6. A-380 lands at Sydney International using GBAS Cat-I June 2007

7. Flexible Approaches End Aim: Cat II/III and Flexible Approaches
Guided Departures
Terrain Restrictions
GRAS and GBAS provide Vertical Guidance and
Flexible approaches
Angled Approach
Community Noise
Straight Approach
Runways
Parallel Approach
Displaced thresholds
can increase throughput,
And provide short taxi-times
Sectored Approach
Multiple glide-slopes are
available to help overcome
environmental issues
Curved Approach

8. Why GRAS?
New ICAO approved approach minima (APV) means Australia and other States need to make a decision on the way ahead.
WAAS moved its footprint over the Pacific 35° further east in July 2007
MSAS has one orbital determination/monitoring station in Australia at Uriarra near Canberra.
MSAS Service Volume does not reach Australia.
GAGAN does not cover all of Australia
Sovereignty Issues

9. SBAS Service Volumes

10. High density traffic area
Sydney-Melbourne

11. Service Volume
Footprint

12. Current WAAS satellite coverage 30 Jun 07

13. Future WAAS satellite coverage from 31 July 2007

14. GRAS Program Overview Similar to SBAS and GBAS Test bed completed 2005
Full Scale Development started 2005
ICAO SARPs issued November 2006
RTCA MOPS approved September 2007
Operational testing mid 2008
Certified production systems 2009
Normal
Not Available
Test
Service Alert
Silence

15. Technology Overview NPA 400-600ft GRAS 250ft GBAS 200ft
GRAS Transmitters
Sydney Airport
Regional Airport
Increased safety, accuracy & integrity
More efficient approaches
Reduced infrastructure & real estate
Increased Guided missed approaches
Increased Integrity
Supports ADS-B - accurate surveillance
Assists UPR & UPT
Mixed Mode operation with RNP
Guided Departures
Situational Awareness
Accurate departure tracks
Environmental saving

16. National Aerodromes

17. National GRAS Coverage at 10,000 ft MSL

18. GPS Outages Australia
Date: 4-Oct UTC Briefing reference number:
SYDNEY (YSSY)
GPS RAIM PREDICTION YSSY
TSO-C129 (AND EQUIVALENT)
FAULT DETECTION NO GPS RAIM FD OUTAGES FOR NPA
TSO-C146A (AND EQUIVALENT)
FAULT DETECTION AND EXCLUSION
TIL
TIL
TIL
TIL [55 minutes]
TIL
TIL
TIL
TIL [55 minutes]
TIL
TIL
TIL
TIL [55 minutes]
GPS RAIM FDE UNAVBL FOR NPA
Aircraft must carry a terrestrial nav aid for alternate airfield
Problem is piggy backing GPS SVs closely aligned geometrically

19. Thank you