[Date Prev][Date Next][Thread Prev][Thread Next] - [Date Index][Thread Index][Author Index]

wrc2000 allocates 1260-1300 to Galileo(euro nav sats) primary in european area



gps world september 2000 www.gpsworld.com

chris n_n_0_v     says.................
This could be cause for alarm as amateur satellite is secondary in this band
to aero radionav and earth to space in 1260-1300 is secondary in
european areas according to my 1984 NTIA book which is probably
well out of date now.
-------------------------------------------------

Galileo bands are E5 (1188-1215 MHz),
E6 (1260-1300 MHz), and Cl (5010-5030
MHz).
----------------------------------------------------






Galileo is Europe's contribution to the next
generation Global Navigation Satellite Sys-
tem (GNSS), intended to provide the Euro-
pean nations with greater independence by
-delivering a civil-controlled satellite-based
navigation  system.  Implementation  of
Galileo is expected to stimulale growth in the
use of GNSS technology in inteimodal trans-
port systems, thereby improving mobility,
safety, and quality of life whilst also stimu-
lating economic growth in the areas of
receiver manufacture and application devel-
opment.
When considering the possibility of a fail-
ure (whether intentional or not) of GPS to
maintain a service, the implications for com-
mercial customers in fields such as telecoms,
location-based services, and the financial
community are clearly not acceptable. For
these reasons and in consideration of the
potential impacts on European businesses,
the European Commission (EC) and the
European Space Agency (ESA) has em-
barked on the definition phase of Galileo.
DEFINING GALILEO
Design of the Galileo system is currently
being finalized, primarily under the study
contracts funded by EC and ESA. The com-
bination of these efforts is refened to as the
definition phase, which will be concluded in
the first quarter of 2001. However, a decision
by the public sector to proceed with Galileo
is to be taken in December 2000.

plan calls for Galileo to move into a develop-
ment and validation phase from 2001 to
2003, with the deployment and in-orbit test-
ing being earned out during 2004 and 2005.
The delivery of initial services is targeted for
2006, followed by a certification process to
allow Galileo's use as a primary means of
navigation in safety-critical applications such
The services are currently envisaged to
provide a service that is free at the point of
use, similar to the civilian version of GPS.
Galileo will also offer a range of chargeable
services with additional features that will
make the service much more attractive.
These additional features would include such
improvements  as  an  integrity  signal,
improved reception, and improved accuracy
and availability - all with a guarantee of ser-
vice delivery. The improved availability,
together with guarantees of service backed
by commercial liabilities, will provide value-
added service providers such as location-
based service and content providers with the
kind of contractual structure on which their
businesses can develop.
One reason why these improved services
can be delivered stems from the recent World
Radiocommunications Conference (WRC-
2000) allocation of additional frequencies to
Radio Navigation Satellite Service (RNSS).
Some III megahertz have been added for
RNSS downlinks, of which 24 megahertz are
intended for GPS future L5 (IIM-im
MHz), and the remaining 87 megahertz
can be used freely for Galileo. These new
Galileo bands are E5 (1188-1215 MHz),
E6 (1260-1300 MHz), and Cl (5010-5030
MHz). In addition, 60 megahertz have been
introduced for RNSS uplinks. GPS and
GLONASS are using none of this new allo-
cation; so, Galileo could develop creative
uses of this uplink.
IB summary, while WRC-2000 allowed
Qffi-bMdftto increase from 48 to 72 mega-
bUK, Q¹ bauds available for Galileo down-
Unfc jumped from 15 to a total of 102  .
megahertz. With such plentiful resourcea,
Galileo can definitively become a success
story.
The current baseline for Galileo calls foia
constellation of around 30 middle Earth-
orbiting (MEO) satellites. The option of
including some geostationary (GEO) satel-

lites in the constellation is not ruled out ano,
indeed, some interesting options could
become available if GEOs are used to com-
plement the system. The option of delivering
a search and rescue service is also being ana-
lyzed for both technical and economic

viability.
Assuming that this decision is positive, the

----
Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org



AMSAT Top AMSAT Home