Transcript Slide 1
Optimal Use off Airspace by
ASAS
Syaid Ali Javanmard
(Shiraz airport)
Introduction
In the near future capacity problems are
foreseen
ASAS: Airborne Separation Assurance System
Introduction
‘ASAS’ was appeared in 1995
Airborne Separation Assistance System
concept is based on delegation of
manoeuvre to the crew.
ASAS definitions
“An aircraft system based on
airborne surveillance that provides
assistance to the flight crew
supporting the separation of their
aircraft from other aircraft.”
ASAS principles
Airborne surveillance based on ADS-B gives
flight crews a traffic picture
Air Traffic Services can be enhanced
through a greater involvement of the flight
crews and the aircraft systems (the flight
deck) in co-operation with controllers
ASAS application categories
Airborne Traffic Situational Awareness
Airborne Spacing
Airborne Separation
Airborne Self-separation
Airborne Traffic Situational Awareness
Aircraft CDTI
ASAS
Display
ADS-B
Expected Benefits
Providing information on surrounding traffic
may help crew to have a better
understanding of situation.
Improved safety through earlier anticipation
of collision risks.
Expected Benefits
Reduced voice communications through a
better flight crew traffic situational
awareness.
Increased efficiency
procedures.
of
existing
VFR
Airborne Traffic Situational
Awareness Applications
GS 34 TWY Jto NEXT: D [ 290 ft] HDG 359°
TAXI TO PARKING POSITION V135
RANGE:
360
330
1200 ft
030
D
V135
H
V117
V115
D
V118
K
V116
K
34L/16R
D
• Improved
taxi and
runway
occupancy
awareness
Enhanced successive
visual approaches
Within the sequence:
The ‘lead’ aircraft in any pair
must be ‘ADS-B out’ capable
The ‘trail’ aircraft must be
‘ADS-B in’ capable
ADS-B
Airborne Spacing Applications
Time or Distance
DLH900
SK9821
Expected benefits
Improved Capacity and flexibility
Reduce controller workload
Reduced sector hand-off communications
Airborne Separation Applications
Target
“DLH600 clear of target,
turning direct to ABC”
Delegated
“DLH 600 pass behind target
maintain airborne separation,
report clear of target”
Expected benefits
Improved Capacity and flexibility
Reduction separation minima
Reduce controller workload
Airborne Self-separation
Applications
Airborne Self-separation applications require
flight crews to ensure that their flights remain
separated from surrounding traffic, in accordance
with applicable airborne separation standards.
In a new class of controlled airspace, flight crews
will have authority to self-separate from other
aircraft and fly their preferred trajectories,
thereby enabling controllers to focus on
management of traffic flow.
Conflict Detection & Resolution
Heading
distance
Intruder’s
protected
zone
Minimum
distance
Own ship
Speed change
Avoidance vector
Intruder
Expected benefits
Safety:
e.g. in airspace where there is no
separation provision
Flexibility: e.g. in low/medium density en-route
airspace
Capacity: e.g. in airspace where procedural
separation is provided or in high density en-route
airspace (if airborne separation minima are
smaller than ATC separation minima)
- Traffic display
- application
identification
- parameters to
control the
current
application
- surveillance &
alerting
Specific, loadable
Data-link clearances
Dedicated ADS-B
controls
Management of ASAS
functions & traffic display
Conclusion
Use of airspace can be enhanced through
greater involvement of flight crews and
aircraft systems in co-operation with
controllers and the Air Traffic management
system.
Thanks For Your
Kindly Attention