Transcript FANS-1 and ATN Data Link: An Avionics Perspective
FANS-1/A and ATN Data Link: An Avionics Perspective
Bob Kerr [email protected]
Agenda
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Aviation Data Link Users
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Today’s ATC Data Link: FANS-1/A
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The Next Step: ATN
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System Accommodations
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Lessons Learned
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Conclusion
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Potential Aviation Data Link Users
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FANS 1/A Data Link - Overview
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Augments other ATM functions, e.g. RNP ATC Communications using existing ACARS data link infrastructure
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Automatic Dependent Surveillance
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ATC Data Link - (pilot
controller communications)
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Aircraft Equipped (current or available soon)
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Boeing 717, 747-400, 757, 767, 717, MD-90, MD-10, MD-11 Airbus A320 family, A330, A340 Planned for Classic retrofit, Biz Jets, military transports, ...
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Regions
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Oceanic and Remote Airspace Benefits
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Crew workload (replaces routine HF communications)
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Dynamic Re-routing
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User-preferred Trajectory (available soon)
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Equipment Requirements - FANS-1/A D/L
MCDU Data Link Key FMS A-618,A-622 MFD A-724B ACARS MU
A429 A429 Analog
ATN 2000 - London - Sept. 2000 HF Radio Satcom VHF Radio 5
Equipment Requirements - ATN
MCDU FMS ATN Applications MFD CHI Upgrade A-758 CMU ATN Router & Applications
A429 A429 A-429
ATN 2000 - London - Sept. 2000 HF Radio Protocol Update Satcom Data Level 3 A-750 VHF Data Radio VDL Mode 2 6
VDR Growth
Increased Functionality
Today’s VHF Radio Mode 0
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25 kHz/8.33 kHz FM Immunity 2400 bps ACARS MSK Modulation
Mode A VHF Radio
Modem
Mode 2 VHF Radio
2 nd DSP
<2000
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Internal Modem ARINC 429 Buss to CMU/ATSU
2000
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D8PSK Modulation Spectrum Mask 31.5 kbps data link
2001
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CMU Growth
Increased Functionality
ATN Compliant CMU VDL Mode 2 CMU (ARINC 758) Today’s ACARS MU or ATSU
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ACARS Messaging Support for FANS-1
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ATC Messages ARINC 623 ATC Apps
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(PDC, OCX, ATIS, etc) Uses MCDU or Proprietary CDU
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VDL Mode 2 AOA ARINC 758 or 724B
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ATN Protocols ATN Baseline 1 Apps
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(CM, ADS, CPDLC) Data Link CDU
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ATN Baseline 2 Applications Dual Operation Enhanced Security (authentication and encryption) Network Management
Today’s Systems 2001
ATN 2000 - London - Sept. 2000
2002 2004 - 2007
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FMC Data Link Growth
Increased Functionality
CPDLC Compliant Flight Management Computer Today’s Flight Management Computer
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ATN Baseline 1 Support Auto-load route uplink ADS data transmission
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ATN Baseline 2 Support Clearance requests Clearance uplinks
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ACARS Apps (AOC) FANS 1/A Apps ARINC 622
Today’s Systems
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2005 - 2007
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Integrated Avionics Data Link Growth
Increased Functionality
CPDLC Compliant Integrated Avionics Computer Today’s Integrated Avionics Computer e.g. AIMS, EPIC
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VDL Mode 2 AOA
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ACARS Apps (AOC) FANS 1/A Apps ARINC 622
Today’s Systems
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ATN Protocols ATN Applications (CM, ADS, CPDLC)
2005 - 2007
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Crew Interface
MCDU
2119Z FROM KZAK CTL AT ALCOA CLB TO & MAINT
OPEN
FL310 * UNABLE < OTHER
DCDU
STDBY* WILCO*
MFD
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Integration Challenges
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System Accommodations
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FANS-1/A and ATN Services will co-exist into the future
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Different communications infrastructure Different message definitions
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but some mapping is possible Operational and Service differences must be minimized Accommodation possible on aircraft, ground, or both
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Possibility of reduced benefits regionally Under analysis in RTCA SC-189/EuroCAE WG-51
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Lessons Learned (1)
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Programmatic
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Tight configuration management for successful interoperability
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Close cooperation between the participating ATC Service Providers is required
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Technology introduction quicker than modifications to operational procedures
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Operational benefits not as early as planned
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Lessons Learned (2)
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Human Factors
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Pilot interface must be carefully designed
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Adequate crew training is expensive but mandatory
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Technical
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Compatibility of air and ground navigation data base
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Significant operational benefits accrue from tight interface with Flight Management System
‘Auto-load’ of Route Clearances, etc.
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High integrity and robust data link infrastructure required to support ATC data link safety requirements
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Conclusions
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FANS-1/A ATC Data Link suitable for oceanic and remote geographic regions into the future
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ATN ATC Data Link is NOT an immediate replacement for FANS-1/A
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Supports different airspace needs Supports different user mission needs
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Successful ATC Data Link requires tight integration between Communication system and other avionics
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CHI : ‘Pilot friendly interface’ FMC : CPDLC integration with the ‘navigator’
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