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T
THE ATM SYSTEM
FOR EUROPE
Next generation Communications,
Navigation and Surveillance
(CNS) technology7
A new concept has been proposed,
building on the use of geo-stationary
satellites, to establish next generation
Aeronautical Mobile en-Route Satellite
Services. Such services would be valuable
in high-density airspace areas,
and the construction of a technical
demonstrator is underway.The foreseen
Europe-wide commercial market for
such a system was estimated at some
20 to 60 million Euro by the year 2008.
The study recommended further activities
to encourage next generation satellite
and aircraft-based CNS applications in
order to improve safety and capacity
in ATM.
Studies showed that the implementation
of Airborne Separation Assurance
System applications is feasible in the
short term using the data available on
board the majority of aircraft, once the
remaining technical and institutional
barriers have been overcome.
These systems would allow for optimised
use of air corridors without cockpit
crews being widely dependent on
ground-based Air Traffic Control (ATC)
for in-flight guidance.
he European Air Traffic
Management (ATM) system can be
considered as a "system of
inter-dependent systems". Its purpose
is to provide a safe, timely and orderly flow
of air traffic, accommodating traffic
demand, that is cost- effective, operates on
the basis of uniform principles, satisfies
national security requirements and is
environmentally acceptable. In view of the
rapid growth in demand for air travel, the
European ATM system requires radical
innovation and development.
Technological contributions
to future ATM systems
New technological developments
addressing the safety requirements of
the European ATM system are emerging
and need to be assessed.Therefore research
has investigated advanced satellite systems,
related broadcasting technology and
on-board components to automate
airborne separation.
T
© Eureka Slide,Domelounksen
SINGLE EUROPEAN SKY
8 9
Noise abatement in the vicinity
of airports 8
Models for predicting noise exposure
around airports have been evaluated,
and recommendations made on
the capabilities and key variables for
modelling.
Following this, noise abatement
procedures were assessed using case
studies based on the airports
Amsterdam-Schiphol,Madrid-Barajas
and Napoli-Capodichino. For the short
term, promising operational procedures
were found to be:

an increased initial altitude before
the aircraft enters its final glide slope;

a reduced landing flap setting;

delayed establishment of landing
configuration (gear down, full flap
extension);

an optimised take-off procedure with
rapid initial climb; and

a continuous descent approach
procedure (for use outside peak
hours).
Cost-benefit analysis highlighted
the value of an approach procedure
combining delayed stabilisation,
reduced landing flap setting and
an intercept altitude of 3000 ft for
the start of the glide slope.
This can reduce noise with no loss
in airport capacity.
Tackling the impacts
of rapid air traffic growth
Over the last 40 years, the steady increase
in the number of flights and in urban
developments around airports has greatly
increased the exposure of the public to
aircraft noise. Some improvements might
be realised in the short term through changes
in the way aircraft are operated (without
any change in aircraft and air traffic control
systems) ground systems and airborne
equipment would help in the longer term
over the next five to ten years (if developed
to meet noise criteria).Therefore
an inventory of current regulations and
practices affecting aircraft noise has been
compiled, together with a study of the
operational, safety, capacity and economic
constraints that might influence
the definition of new procedures.
VALIDATION OF ADVANCED ATM
TECHNOLOGIES AND CONCEPTS
The evaluation of several individual
applications has provided the basis for
verifying the overall capability of a single
system solution for seamless gate-togate
operations across CNS domains.
Among the components assessed have
been:

Global Navigation Satellite System
(GNSS) precision navigation capability
en-route and during approach;

on-ground situation awareness and
taxi guidance;
　
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