1. Ground System implication for ASAS implementation
Prepared by
Patrick Souchu
STNA/3E

2. Agenda ADS-B Package 1 Sequencing and merging application
Ground Surveillance Application
Airborne Surveillance Application
ATSAW : PO-ASAS level 1 application
ASAS : PO-ASAS level 2 application
Sequencing and merging application
Global architecture
Arrival and departure manager
FDPS
HMI
Data-link CPDLC
ADS-B network
Training tools
Recording
Preliminary conclusion
29/04/03
ASAS-TN

3. ADS-B package 1 GSA Non radar area surveillance
Ground ADS-B station
Should not be very expensive compared to a radar
Installation cost can be the most significant (e.g. access road)
Controller HMI
Not really different from radar surveillance
Airport surface surveillance
Complement an existing SMGCS
Enable SMGCS on medium or small airport
Complement radar surveillance
Integration with Mode S radar stations
Additional ADS-B infrastructure
29/04/03
ASAS-TN

4. ADS-B package 1 ASA ATSAW ASA A priori no impact on ground ATM system
If no difference in operational procedure
ASA
In trail procedures
Oceanic environment
Passing and Crossing application
Difficult to assess real impact on ATM system and responsibility sharing between pilot and controller
Sequencing and merging
Co-Space demonstration
Potential benefit for extended terminal area
Operational concept to be further defined
preliminary impact assessment on ground system
29/04/03
ASAS-TN

5. Sequencing and merging application
Arrival and departure manager
Takes into account aircraft capability
Provides the controller with a proposed sequence and prepares instruction for sequencing
Time or distance separation
Impact on trajectory prediction
FDPS
Aircraft capability indicated in flight plan ?
Trajectory prediction
29/04/03
ASAS-TN

6. Sequencing and merging application
Controller HMI
Display of aircraft capabilities
ADS-B out for target aircraft
ASAS capability for trailer aircraft
Display of linked aircraft
Designation of target and trailer aircraft
Allocation of a separation
Integrated with arrival departure manager specific function
Monitoring of separation
Appropriate new warning tools
Between MTCD and STCA
Recovery function
Termination of the ASAS separation
29/04/03
ASAS-TN

7. Sequencing and merging application
Need for data-link
Enhanced CPDLC is probably the best solution to give sequencing and merging clearance
Unambiguous identification of aircraft
Easy integration of data into airborne systems
Ensure consistency between air and ground views
Need for new messages to be defined by ICAO
Enhance ATN CPDLC communication stack
Upgrade of communication systems (eg Air server)
Additional CPDLC functions in controller HMI
29/04/03
ASAS-TN

8. Sequencing and merging application
ADS-B network
Reception of ADS-B data on ground is needed
Confidence in ADS-B current capabilities of each aircraft
Improvement of radar surveillance with ADS-B may be necessary
Specific ADS-B ground stations or
Enhancement of Mode S radar capabilities
Omni directional 1090 MHz reception capabilities
Enhance radar tracking with ADS-B
Integrity monitoring with radar data
Combination of ADS-B and radar for enhanced tracking
ARTAS
Radar networks impact
29/04/03
ASAS-TN

9. Sequencing and merging application
Other tools
Training simulator
All previous capabilities must be available in controller training tools
Pseudo pilot new tool to manage sequencing
Simulation of new trajectories
Monitoring of ADS-B ground stations
Recording
ADS-B data
Sequencing and merging specific events
29/04/03
ASAS-TN

10. Conclusion A very preliminary analysis
new concept and new procedures always impact the ATM system
Too early for any Cost assessment
Safety implications
Is a unique data-link sufficient ?
Development level of ATS system supporting ASAS
Transition to be considered
Need for TIS-B
Transition accommodation feasibility with TIS-B ?
ASAS capabilities to be integrated in ATS system development plan
Implementation timescale is difficult to assess
29/04/03
ASAS-TN

11. Conclusion From ASAS spacing to ASAS separation
Spacing is supposed not to change task responsibility sharing and separation minima
ASAS separation will impact both
Controller tasks to be defined
Strategic air traffic management
Monitoring
Airborne separation minima to be defined
Fixed or dynamic
Coordinated with ground ATM ?
Recovery procedures and tools
Spacing is a huge step, separation will be even bigger
29/04/03
ASAS-TN