[unav_all] Allocating GNSS Costs

Ruth E. Neilan ruth.neilan at jpl.nasa.gov
Mon Oct 4 11:12:31 MDT 2004

Author: Ruth Neilan

Dear colleagues,

I am passing some information on to you concerning GNSS cost 
allocations with respect to civil aviation.  Generally, this is not 
an area that the IGS or IAG are concerned with, however, this relates 
to continued advocacy of an 'open data policy'  and should be 
reaffirmed by our communities as a unified approach.

Here is what is happening:
With the development of the  Galileo Programme business model, a 
study is underway to explore and analyze the impact of cost 
allocations of GNSS, specifically, how legally and technically 
Galileo/EC can recover costs for CNS/ATM (Communications, Navigation, 
Surveillance/Air Traffic Management) at regional levels.  This is an 
agenda item being addressed now by ICAO (International Civil Aviation 
Organization) at their meeting in Montreal (Sep 28 - Oct 8, 2004).

A similar agenda item proposes a resolution countering this position, 
which comes from IATA (International Air Transport Association)
"The IATA member airlines recognize the importance Satellite 
Navigation will play in the development of the CNS/ATM development 
and the benefits it can bring to the aviation community as a whole. 
However political or specific geographical economic interests could 
significantly hinder the early usage of presently available services 
and might lead to an undesired increase of ANS infrastructure costs."

Further stated:
"2.3. The aviation community, operating globally, but subject to the 
sovereign requirements of the States through which they operate, can 
be easily targeted as a potential source of financing, forced by 
State legislation to use and or pay for a specific service to operate 
within a specific airspace where other adequate freely available 
services are in place."

An important reason to bring this to your attention is that for the 
scientific and technical communities of IAG/IGS, the long term 
availability of GNSS is critical for our diverse activities, 
observations, and research.  Galileo is certainly a welcome addition 
to GPS and GLONASS, forming  a truly multi-service GNSS in the 
future.  It is not clear at present how cost allocations may be 
implemented, and what impact such mechanisms might have on our 
ability to utilize Galileo. As noted in the International Union of 
Geodesy and Geophysics (IUGG) Resolution 10, July 2003 (below),  you 
are encouraged to engage in activities to ensure long term 
availability of these satellite signals -- express your support for a 
policy of openly available data and information.

with regards,

Ruth Neilan


July 2003

Resolution 10: Inter-operability and Protection of Global Navigation 
Satellite System signals

The International Union of Geodesy and Geophysics,

1. 	The extensive use of the Global Positioning System (GPS) over 
the past decade, the highly successful integrated receiver and 
analysis experience in combining GPS and GLONASS observations, and 
incredible potential of combining multiple Global Navigations 
Satellite Systems (GNSS), anticipated by the addition of European 
GNSS Galileo; and

2.	The GPS/GNSS modernization program features three civil signals, and,

3.	The broad user base of the GPS/GNSS system within IUGG and 
sister organizations as a tool for science, multidisciplinary 
applications and societal benefits.

The need to foster and protect GNSS systems; and

1.	That GNSS providers are strongly encouraged to cooperate and 
coordinate closely to ensure inter-operability and compatibility in 
developing, deploying and operating  seamless systems now and in the 
future and to maximize common frequencies and signals; and

2.	That scientists in IUGG and sister organizations are 
encouraged to engage in continual activities to protect the signal 
and spectrum of collective GNSS, to secure long term availability of 
these satellite signals available from present and future GNSS 


  International GPS Service - Central Bureau
        Jet Propulsion Laboratory
    tel: 818-354-8330, fax: 818-393-6686
          mobile: 626-975-1136
        <ruth.neilan at jpl.nasa.gov>

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