182a_n00feb23_dg 1 local area augmentation system concept of operations alaska regional briefing...
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182a_N00FEB23_DG 1
Local Area Augmentation System
CONCEPT OF OPERATIONS
Alaska Regional BriefingAnchorage October 1, 2002
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182a_N00FEB23_DG 2
LAAS CONOPSProgram Philosophy
• Common Focal Group for Maximum Benefit Approach to Implementation
• Multi Discipline Approach to Implementation GPS Program Office
• Focal Point for operational issues– FAA Specification– RTCA - MOPS– Manufacturers– Operators
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182a_N00FEB23_DG 3
LAAS Concept of Operations Team
• Mix of Technical and Operational Membership• Multi discipline Composition
– Government (GPS Program Office,Flight Standards, Certification, Air Traffic, Flight Check/Airways Facility)
– Industry (Avionics/Ground Element Manufacturers)– User (Airlines, General Aviation), Airports– International Participation
• DFS, Eurocontrol, Sextant, Thomson
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182a_N00FEB23_DG 4
Stakeholder Activities
FAA Disciplines Manufacturers Operators Specification RTCA
Other Stakeholders: TAOARC, RNAV/RNP WG ,ATA Cooperative Agreement
SOITCONOPS WG
RTCALAAS CONOPS WG
PWCLAAS Business Case
ATA User GroupComplex Procedures
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182a_N00FEB23_DG 5
CONOPS 5/12/00
• WG Meeting Seattle 26 April 2000 with Industry and Users for Final Draft Discussions• FAA/RTCA/AOPA/ATA/GIP/Industry
• LAAS Concept of Operations Accepted by SOIT 12 May 2000
• CONOPS Presentations– ION Anaheim, 26-27 January 2000– GNSS 2000, Royal Institute of Navigation
Edinburgh/Scotland, 1- 4 May 2000– ATA, 24 May 2000
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182a_N00FEB23_DG 6
LAAS Basic Operations
LAAS GroundSubsystem
LAASAirborneSubsystem Final Approach Path
VDB (VHF)
GPS Signal-in-Space
APL(Optional)
GPS/LAASSignal-in-Space
APLBroadcast (L1), optional
SatelliteSubsystem
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182a_N00FEB23_DG 7
GPS AugmentationPhases of Flight
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182a_N00FEB23_DG 8
Normal Operations
• Precision Approach– CAT I– CAT II– CAT III
• Missed Approach - straight• RNAV/LAAS Operations
Desired Mode is Integrated RNAV Operation
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182a_N00FEB23_DG 9
LAAS PVT Capabilities
• Position, Velocity,Time (PVT)(Accurate, real time airborne equipment output)– RNAV application– Complex terminal arrival to precision final– Complex terminal departures– Missed Approach (complex)– Contingency procedures– 3D/4D Procedures
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182a_N00FEB23_DG 10
Low Visibility Ground Operations
Safety/Capacity/Economy• A-SMGCS• LAAS Accuracy• Aircraft
– Navigation (RWY-Gate &Gate-RWY)– Situational awareness
• Runway Incursion• Airport Vehicles
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182a_N00FEB23_DG 11
Required Navigation Performance
• Concept under Development– US– ICAO
• Applicable for all Terminal Navigation– Arrivals– Departures– Instrument Approach Procedures– Contingency
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182a_N00FEB23_DG 12
Conclusion
• LAAS Desired Operational Capabilities– LAAS CAT I Straight In– LAAS Guided Missed– PVT/RNAV/RNP– Complex Procedures– Terminal Routes– Surface Navigation– CAT II/III
• Improved User Benefits• Increase in Safety and Efficiency
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182a_N00FEB23_DG 13
CONOPS 5/12/00Architecture Discussion
• Complex Procedures– Guidance through PVT/FMS RNAV
• LAAS Provides PVT and Protection Levels which Support RNP RNAV Operations
– Incorporate Complex Maneuvering into the VDB Broadcast
• Uplink of Complex Procedures Kept as an Option (Based on Some User Request)
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182a_N00FEB23_DG 14
CONOPS Update
• Industry Stakeholders Have Requested RNAV-like Navigation Capability from LAAS
• FY-02 Budget Contains Funding and Mandate for Complex Procedures and CAT II/III
• Action• Review, Review Requirements and Emphasize Industry
Desires• ATA User Group Involvement
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182a_N00FEB23_DG 15
Complex Procedures Definition ?
• Complex Procedures to Include:– Curved Approach – Offset Approaches– Multi-Segment Arrivals– Multi-Segment Missed Approaches– Multi-Segment Departure Procedures
Any Operations Other Than a Single Straight in (“ILS LOOK Alike”)
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182a_N00FEB23_DG 16
Other LAAS Applications
• Not Complex Procedures but Enabling Capabilities of LAAS– Surface Navigation– Adjacent Airport Coverage– Displaced Threshold
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182a_N00FEB23_DG 17
Document Changes
• RNP-RNAV Added to Operations and Procedure Design• System Description Updated to Present Spec• Surface Navigation with Latest RTCA inputs• Coverage Updated (ACB 430)
– Minimum CAT I Coverage / Expanded CAT I Coverage – Minimum Missed Approach / Minimum Practice Autoland
Coverage – CAT I with RNAV Coverage
• Complex Procedure updated– Architectures (RNP and Uplink)
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182a_N00FEB23_DG 18
LAAS Coverage Volume
• Potential Operational Applications of LAAS Are Efficiently Addressed by Defining Modular Coverage Volumes That Can Be Combined to Meet All Site-specific Requirements.
• The Five Volumes Defined Below Provide the Minimum Coverage Volume to Support the Indicated Function While Considering VDB Siting Requirements.
• Minimum Cat I Coverage Volume• Minimum Missed Approach Coverage Volume• Minimum Practice Autoland Coverage Volume• CAT I With RNAV Coverage Volume
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182a_N00FEB23_DG 19
Requirements/Activities for LAAS Complex Procedures
Different Solutions to Achieve ComplexProcedures
• RNP (FMS-LAAS Final)• LAAS Uplink• Architectures are Part of CONOPS • No Detailed Activities (Ongoing)
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182a_N00FEB23_DG 20
• Define Broadcast Format for Complex Procedures (Approach, Guided Missed Approach, Guided Departure)
• Final Approach Segment Data Block– Multiple Segments—Curved Segments (RF Leg)
– Linear and Angular Segments
• Capacity Analysis Required– VDB Bandwith Capabilities to Broadcast Complex Procedures
• Establish Alert Limits– Time to Alert Equates to Previous MLS Data
• Evaluate Geographic Separation/Frequency Assignment Criteria to Support Expanded LAAS DMAX of 60NM
Requirements/Activities for LAAS Uplink of Complex
Procedures (RTCA )
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182a_N00FEB23_DG 21
• Insure That LAAS Complex Terminal RNP-RNAV Is Compatible With Other RNAV Systems
• Format and Content of Data Broadcast– Minimum Segment Lengths and Turn Radii– Lateral and Vertical Display Sensitivities to Be Established
for Small Linear RNP Values– Establish Standards for Parallel Tracks for Both Arrivals and
Approaches
• Develop Standards for Offset Approaches to Lowest Minimums
Requirements/Activities for LAAS Complex Procedures
(AFS 420)
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182a_N00FEB23_DG 22
Avionics Implementation Options
• LAAS +LAAS Navigator– Deviations for Complex Procedures within
LAAS Service Volume
• LAAS + RNP FMS– LAAS Deviation to Final Approach Segment
(FMS-LAAS Final)
• LAAS + TSO-C146a– LAAS RNAV Capability through WAAS