FAAs Implementation Plans for Satellite Navigation

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FAAs Implementation Plansfor Satellite
Navigation
Briefed By Kanwaljit S. Sandhoo
(MITRE/CAASD) 8th European CGSIC/IISC Meeting,
Prague December 2-3, 1999
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Overview

• Background
• SATNAV Program Objectives
• Wide Area Augmentation System (WAAS)
• Local Area Augmentation System (LAAS)
• Summary

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Basic GPS Civil Aviation Benefits

• Improves Aviation System Safety
• Available for Primary Use in the Oceanic Phase of
  Flight
• Available for Supplemental Use for En Route,
  Terminal, and Non-Precision Phases of Flight
• Cost Effective Resource for Nations with Limited
  Air Navigation Infrastructures
• Primary Means Use of GPS can Reduce or Eliminate
  Maintenance Costs Associated with Older Expensive
  Ground-based Navigation Aids

4
Current Navigation Deficiencies

• Large Separation Standard Requirements
• Lack of accurate Aircraft Position/Navigation
  Data
• Inability to Provide Optimum Routings to all
  Users
• Absence of Instrument Approaches at Qualified
  Runways
• Restrictive Departure Procedures in Poor
  Visibility
• Limited Automated Aircraft Surface Navigation

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Basic GPS System Limitations

• Integrity
• Notification Time 15 Minutes or Greater
• Availability
• 70 for 24 satellites
• 98 for 21 satellites
• Accuracy
• Sufficient for En Route through Non-Precision
  Approach
• Not Sufficient for Precision Approach

Does not satisfy Civil Aviation Requirements for
Primary-means Navigation in all Phases of Flight
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Satellite Navigation Program Objective
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Wide Area Augmentation System (WAAS)

• Safer

• Increased Capacity

• Cost Effective

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WAAS Phase I Status

• Hardware Installed and Tested
• 25 WAAS Reference Stations (WRS)
• 2 WAAS Master Stations (WMS)
• Communications Installed and Operational
• 2 INMARSAT Satellites (AOR-W and POR)
• Terrestrial Communications Network
• Software
• Software Final Qualification Test Completed
• 7 of 8 Design Qualification Tests Completed
• Successfully Completed 3 Signal in Space Builds
• System Integration Completed

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WAAS Phase I Capabilities

• Introduces Operational Capability
• Non-Precision Approach
• Precision approach WAAS Precision Approach
  procedures and GPS/WAAS Certified Receivers Will
  Become Available to the Aviation Community
• Increases Quantity of Airfields with Precision
  approach Capability

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WAAS Phase ISchedule

• 60 Day Stability Test/DQT 1/30/00
• Contractor Acceptance Inspection 4/25/00
• Joint Resource Council In Service Review (ISR)
  Decision 6/30/00
• Instrument Approaches Published 9/07/00
• Commissioning (IOC) 9/25/00

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WAAS FOCInvestment Analysis

• Scope
• Congress Wants SatNav Program to be Most
  Cost-Beneficial
• Congress Wants FAA to Conduct Lease vs. Buy of
  WAAS Satellites
• FAA Needs to Re-Baseline WAAS and LAAS Programs
• Approach
• Involve Users, Industry, and Government Agencies
• Re-Calculate Benefits/Costs Using Conservative
  Approach
• Focus on Risk Reduction Strategies in Determining
  Recommendations

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WAAS FOCInvestment Analysis (Contd)

• Four Alternatives Developed and Analyzed
  Includes Different Levels of Investment in
  WAAS/LAAS/Navaids
• Preferred Alternative Based on Performance,
  Benefit/Cost (2.4), Risks, and Strategic
  Considerations
• Checkpoints Built to Minimize Risk and Allow
  Alternate Paths
• Navaids Reduced 2008-2013 to Basic Backup Network
  
• 4 GEO Satellites to be Acquired Between 2002 and
  2008
• Precision Approach Throughout CONUS
• Capable of Being the Only Navigation System in an
  Aircraft
• Final Operating Capability (FOC) FY2006
• Capable of Being the Only Navigation Service
  Provided by the FAA

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Local Area Augmentation System (LAAS)
L1 - 1575.42 MHz
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LAASAcquisition Schedule
99 01 03 05 07 09 11
Assumed by FAA for Maintenance/Liability
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CAT I Part 171
20 20 20 7 7 8 8
8 8
CAT I Acquisition
(Total of 124 CAT I)
CAT III FSD
RD
CAT III Conversion from CAT I
(Converts78 CAT I to CAT III)
26 26 26
CAT III New Procurement
12 12 12
(Total 0f 114 CAT III)
SUMMARY 160 Total LAAS - 46 CAT I -
114 CAT III (78 CAT I Conversion 36 New
Procurement)
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Summary

• On September 2, 1999, the FAA JRC Reinforced the
  FAAs Commitment to Satellite-Based Navigation
• WAAS and LAAS Baseline Approved
• Low-End Users Get Safety and Access
• High-End Users Get
• Improved Safety
• More Airports and Runways
• More Efficiencies in Airspace and Terminal Areas
• FAA Gets Modernization of NAS
• Improved Safety, Improved Efficiency, and Reduced
  Cost

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FAA GPS Product TeamWebsite

• For further information on the FAAs WAAS
  Program, please visit our website at
• http//gps.faa.gov