CAR/SAM ATN GNSS SEMINAR VARADERO, CUBA May 8, 2002

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Presentation GNSS 3.2

• CAR/SAM ATN GNSS SEMINARVARADERO, CUBAMay 8,
  2002
• Barry Billmann Federal Aviation
  Administration

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• OVERVIEW
• CORE SATELLITE SYSTEM
• WAAS/LAAS INTEGRATION
• LAAS SYSTEM COMPONENTS
• LAAS USER/SERVICE PROVIDER PERSPECTIVES
• LAAS AVIONICS
• MULTI-PATH LIMITING ANTENNA (MLA)
• GOVERNMENT INDUSTRY PROCUREMENT (GIP)
• FAA LAAS DEVELOPMENT CONTRACT

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• Space Segment
• 24 Satellites
• 6 Orbital Planes
• 4 Satellites per Plane
• SVs Orbit at approximately 20
• million meters above the earth
• Each SV Orbits the earth twice a day
• Ground Control Segment
• Master Control Station, Colorado Springs
• Monitor Stations Hawaii, Ascension Island, Diego
  Garcia, and Kwajalein

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WAAS/LAAS INTEGRATION
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Local Area Augmentation System http//gps.faa.gov
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Local Area Augmentation of GPS
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Architecture ConsiderationsService Provider
Perspective

• Minimize Number of Ground Components
• Lower maintenance requirements
• Collocate Individual System Components as Much as
  Possible
• All Equipment on Airport Property
• One LAAS Serves all Runway Ends
• Minimize Siting Constraints
• Clear areas required around components
• Antenna installation requirements

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Architecture ConsiderationsUser Perspective

• Instrument Landing System (ILS) Look Alike
• Accuracy (Performance Characteristics)
• Integrity (Sustain Traditional Responsibility
  ofService Provider)
• Minimal Change to Flight Director/Autopilot
• No Change to Aircraft Approval Process
• Reasonable Processing Requirements on Aircraft
• Minimize Number of LAAS-Dedicated Antennas(e.g.,
  Use Existing VHF Antenna to Receive LAAS Data
  Broadcast)

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LAAS (GBAS) AVIONICS

• MULTI-MODE RECEIVER (MMR) DESIGNED TO MEET ICAO
  LANDING SYSTEM TRANSITION STRATEGY OF 1995
• CORE FUNCTION FM IMMUNITY COMPLIANT ILS SENSOR
• MLS SENSOR OPTION
• GLOBAL LANDING SYSTEM (GLS) SENSOR
• GBAS (LAAS) ILS Look Alike Guidance
• WAAS Option
• Position, Velocity, Time Output to On Board
  Navigator

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Multipath Limiting Antenna(MLA)
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Multipath Limiting Antenna(MLA)
The multipath error magnitude is directly
proportional the ratio of the direct signal
strength to the reflected or multipath signal
strength. If the ratio can be limited, the
corresponding error is also limited.
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FAA Government IndustryPartnership (GIP)

• Government Industry Partnership (GIP) initiated
  to assist all companies developing LAAS obtain
  FAA Type Acceptance
• GIP teams are led by ground systems
  manufacturers, but also require
• Avionics Manufacturer
• Airport
• Airline
• FAA currently has three GIP teams
• Honeywell
• Raytheon
• Thales
• FAA introduced a series of payable events to
  allow vendor building to the FAA CAT I
  Specification obtain some funding

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FAA Development Contract

• FAA intends to award a Full Scale Development
  contract for LAAS this year
• Detailed requirements and schedule have been
  released for industry comment
• Two separate Request For Information (RFI)
  announcements provided feedback to the FAA
• August 31, 2001 and January 31 2002
• Request for Offers (RFO) is due out this month
• Full and Open Competition
• Information available on the FAA Contracting
  Opportunities Website
• http//www.asu.faa.gov/faaco/