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receivers. Because the system
uses signals in space, already agreed by
ICAO, there is no need for international
coordination for such systems.
Spectrum availability
Whilst communications, navigation and
surveillance are all vital enablers to the
ATM infrastructure we must not forget the
issue of spectrum availability. Spectrum
is critical for the implementation of new
systems, which have to be trialled and
evaluated before the existing systems
can be withdrawn and the old spectrum
reallocated. Thus at present the availability
of fresh spectrum is a key issue in
ATM and must be carefully planned. This
is also a globally regulated area through
the International Telecommunication
Union (ITU) where all spectrum issues
are periodically discussed at World Radio
Conferences.
Conclusion
Interoperability and especially global
interoperability doesn抰 just happen. It
is the result of strenuous, dedicated
commitment, cooperation and agreement
between many parties to prepare the
development of mature CNS systems.
These systems can then be enshrined
in the Annexes of ICAO to become the
cornerstone of the next generation of
the ATM infrastructure. Europe knows
this, the US knows this and this is why
SESAR and NextGen must work closely
together to ensure it happens. n
SESAR and NextGen
must work closely
together to ensure global
interoperability.
3- Required
Navigation
Performance
Special
Operational
Requirements
Study Group
4- European
Organisation
for Civil
Aviation
Equipment
5- Radio
Technical
Commission
for Aeronautics
Skyway 49 - Autumn 2008 11
12
Focus
aim achieved ?Where next?
The effective provision and intelligent use of accurate, timely information
is essential. It is the life blood of any successful enterprise. Industries as
diverse as global banking and health care have recognised, exploited
and continue to exploit the very significant benefits to be obtained. Yet
despite its 揾i-tech?glamour and its reliance on information, air traffic
management (ATM) seemed content to continue to rely on the standards
and recommended practices of yesterday. Ken Reid, Head of
Aeronautical Information and Management at EUROCONTROL, explains.
The remorseless increase in air traffic
volume demand has placed enormous
strain on the finite capacity of airspace
and airports. The traditional means of
increasing capacity have, in the core
airspace of Europe and other congested
areas worldwide, reached the point of
exhaustion and other means of improving
system efficiency have to be found. One
such means is the exploitation of aeronautical
information. In previous articles
in Skyway, the concept of aeronautical
information management (AIM) has been
introduced and explained.
EUROCONTROL has invested much
effort in promoting a common understanding
of the concept and the benefits
to be obtained. The AIM Domain
is engaged in a number of projects
designed to prove the feasibility of AIM
and to demonstrate the advantages to
be gained. Included in this portfolio is
the Digital AIM (D-AIM) initiative, jointly
conducted with the Swedish air navigation
service provider LFV, which will
demonstrate the ability to synthesise
diverse information sets into a common
picture, and the Digital NOTAM project
to provide a mechanism offering true
temporality for this common picture. The
work on both is progressing. The results
to date are most positive and encouraging
and other ongoing projects are
exploring different elements of AIM.
The sustained policies of awareness and
technical innovation have borne fruit and
today AIM is accepted globally as the
medium for future information provision
and management. ICAO has established
the AIS-AIM Study Group to develop the
global policy, work programme and guidance
material for change. As such it can
be argued from the strategic and policy
perspective that AIM has been achieved
though clearly the technical detail requires
significant investment and global harmonisation
before it can be realised.
So if AIM has been achieved, have the
information needs of ATM at a conceptual
level been satisfied? The simple
answer is, far from it. Readers of previous
articles published in Skyway and of the
AIM concept itself will recall that AIM is
considered to be the first and perhaps
the most significant step in the realisation
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本文链接地址：
Skyway Magazine Autumn 2008(7)
