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| Subject: | [gislist] Galileo project - an alternate to GPS 1 of 2 |
| Date: |
01/05/2006 09:35:00 PM |
| From: |
mervyn frankel |
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Message
Thought this would be of interest.....
Happy New Year........
What is Galileo?
Galileo will be a global network of 30 satellites providing precise timing =
and location information to users on the ground and in the air.
It is costing some 3.4bn euros (=A32.3bn: $4bn) of public and private =
investment and represents the biggest space project yet undertaken in =
Europe.
Galileo's first demonstrator spacecraft was launched on 28 December: a =
second platform will follow in the New Year.
They will trial the in-orbit technologies needed to run the system. These =
include atomic clocks, the heart of any global positioning system.
If all goes according to plan, a full constellation of Galileo satellites =
will be in operation by the end of 2010.
How will Galileo differ from GPS?
As brilliant as GPS is, its accuracy and availability can on occasions leav=
e =
a lot to be desired, as anyone who has a receiver will know.
Sometimes it can be very difficult to get a fix and the accuracy can drift =
out to 10m or more.
The new Galileo system will offer five service levels (see below) and bring =
a step-change in performance.
Since the first GPS satellite was launched in the late 1970s, sat-nav =
technology has evolved enormously.
Galileo should offer greater accuracy - down to a metre and less: greater =
penetration - in urban centres, inside buildings, and under trees: and a =
faster fix.
The Galileo system will also come with an "integrity" component - it will b=
e =
able to tell users if there are major errors that could compromise =
performance.
Users will also benefit enormously from the agreement between Europe and th=
e =
US to make their sat-nav sysyems compatible and "interoperable".That =
is,future receivers will be able to get a fix using satellites from either =
constellation.
And when the US introduces the next generation of GPS, users will see a =
further jump in performance.
( More info in next e-mail)
Merv Frankel
Senior GIS Analyst
LAN/WAN Internetworking Architect
Senior Networking Specialist
NYC DEP, OIT,10th Fl., 59-17 Junction Blvd.
Corona, N.Y. 11368 718-595-4146
cell 917-841-9507
All change has its challenges.
With teamwork and proactive planning an effective and cohesive unit will =
flourish =
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