asas thematic network workshop #2: taga - traffic awareness for general aviation dfs research and...
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ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
TAGA - Traffic Awareness for General Aviation*
Evaluation of potential benefits enabled by the use of a traffic presentation
onboard of General Aviation aircraft
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
Aug 2000 - July 2003
* co-funded project by the German State Bavarian
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
TAGA
Relation to GS/AS Package 1
• Application: Enhanced visual acquisition for see & avoid (ATSA-S&A)• ... aid for the flight crews to perform their collision avoidance task ...• ... VFR flights, mainly operating in class E and G airspace ...
• ATSA-S&A OSED defines 4 procedure steps:
• Traffic Detection
• Visual Acquisition
• Aircraft Monitoring
• Collision Avoidance
TAGA:Does a traffic presentation onboard of a General Aviation aircraft support the pilot in the detection and identification of traffic?
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
Traffic Information Service- Broadcast (TIS-B) - System
TIS-B GroundStation
Radar GroundStation
Broadcast ofTIS- Bsurveillanceinformation
SSR
SurveillanceData
ProcessingSystem(SDPS)
TIS-BServer
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
CNS SystemsVDR4000
Euro Telematik CDTI2000
Airborne Equipment
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
TAGA Flight Trials Phase 2
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
VDL M4 Mob. TRX
GCAS 2000CDTI
TAGA Flight Trials - General Aviation specifics
Detection of traffic of the same airspeed category by the use of a CDTI
• Detection of traffic of the same airspeed category was possible by the use of the visual traffic presentation only.
• Some examples demonstrate that some aircraft had not been detected by the pilot although they were presented on the CDTI.
• It is useful to enhance the visual traffic presentation by an acoustic traffic alert.
• Update period of 6 seconds sufficient
Detection of traffic of a higher airspeed category by the use of a CDTI
• An acoustic traffic alert is required to detect fast traffic.
• Update period better than 3 seconds required
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
without CDTI with CDTIoverall traffic detection probability
traffic passing aircraft within 2,5 NM range 68% 80% +12%
VDL M4 Mob. TRX
GCAS 2000CDTI
TAGA Flight Trials - Detection Probabilities
front
right
rear
left
front right back left
10-2 2-3 4-8 9-10
2,5 48% 18% 41% 29%5 12% 7% 13% 5%
2,5 52% 23% 26% 24%5 2% 9% 5% 0%
2,5 -4% -5% 15% 4%5 10% -2% 8% 5%
%detected /with CDTI
%detected /without CDTI
benefit
++
+
+front right back left
10-2 2-3 4-8 9-10
2,5 48% 18% 41% 29%5 12% 7% 13% 5%
2,5 52% 23% 26% 24%5 2% 9% 5% 0%
2,5 -4% -5% 15% 4%5 10% -2% 8% 5%
%detected /with CDTI
%detected /without CDTI
benefit
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
VDL M4 Mob. TRX
GCAS 2000CDTI
Conclusions
• Qualitative Statements or Quantitative Tendencies could be given only. Reason: limited number of measurements
• Some examples demonstrate the beneficial use of the traffic presentation during the flight trials
General Statements
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
ASAS Thematic Network Workshop #2: TAGA - Traffic Awareness for General Aviation
DFS Research and Development
October 2003
VDL M4 Mob. TRX
GCAS 2000CDTI
Conclusions
• A significant increase in the overall detection probability had been identified during the flight trials.
These improvements were identified - at distances greater than 2,5 NM and- in positions behind the ownship.
• Pilots feedback:- Traffic presentation provides significant assistance in the detection and identification of traffic- Update period 6 seconds was sufficient for en-route- Update periods better than 3 seconds are requested for the approach and departure phase of the flight as well as for the detection of fast moving targets
• It is not possible to replace the visual scan of the surrounding airspace by the use of a traffic presentation onboard. An electronic traffic presentation can be used to support the pilot only.
Potential use of a traffic presentation onboard
TAGA Project • ATSA S&A • TIS-B • Flight Trials • Results • Conclusions
front
right
rear
left
+++
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