Galileo Budget and Schedule

http://www.bbc.co.uk/news/science-environment-13871198

"Sufficient savings have been found in Europe's Galileo sat-nav
project for at least six additional spacecraft to be bought for the
system before 2014.

The European Commission says it has about 500m euros (=A3440m) "in its
pocket" which it will use to make the extra purchase.

It would take Europe's version of GPS from 18 operational satellites
in the next few years to 24.

. . . EU member states had already committed 3.4bn euros to get 18
satellites into orbit by the end of 2014, and were told recently they
might have to find a further 1.9bn to get a completed "constellation"
of 30 satellites later in the decade.

. . . The first two Galileo spacecraft are due to go into orbit in
October, launched on a Russian Soyuz rocket from French Guiana. They
will be followed by a further pair in 2012.

Another 14 are under construction, with the last satellite in this
series due to roll off the production line in mid-2014. That would
make 18 in total in orbit by 2015.

. . . Six additional satellites, making a total of 24, would take
Galileo very close to full capability.

. . . the 24 satellites could be in orbit by 2015/16."


Related story:

http://www.flightglobal.com/articles/2011/06/22/358572/paris-ariane-5-es-fo=
r-galileo-programme-poised-for.html

"Europe is almost certain to push the "go" button by the end of the
year for Astrium Space Transport to develop an ES version of its
Ariane 5 heavylift rocket, which would allow one launch to orbit four
Galileo navigation satellites.

. . . The ability to launch four spacecraft with one launcher
featuring restart capability to achieve successive orbits would reduce
the number of launches needed, and thus the cost, to orbit a full
constellation of 30 satellites."

On 2011-06-22 11:43 , Ed M. wrote:
s-for-galileo-programme-poised-for.html


I'd really like a GPS receiver that can track both systems and provide=20
data for both systems (sat numbers, az/elev, PR, Sig, Noise, health,=20
etc.) Output to USB would be fine.

--=20
gmail originated posts filtered due to spam.

wrote:

We all would like that. But I believe it will take 3-4 years until
such receivers are commercially available, except for high cost
products.
Manufacturers of low cost-high volume GPS receivers want a
constellation at least near to initial operational capability before
shipping products.
Hence we should see Galileo compatible receivers by the time there are
at least 15 satellites in orbit.

Marcelo Pacheco

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I think we will see consumer product with Galileo capability much
sooner.
Galileo-ready receivers (consumer grade) are already on the market. As
soon as there will be some satellites, they will work with the Galileo
SVs (maybe they need a SW upgrade )
There is no need of initial operational capability, since the reicever
can work with GPS (and Glonass).
The scenario would be different for a Galileo-only receiver (in that
case, the initial operation capability would be needed), but we will
never see such type of recevier.

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Hope you are right. The real question is if the Galileo authority will
wait until there are 18 operational satellites to set L1C and L5
signals healthy.
There are right now 8 L2C GPS birds capable of being set healthy (7
IIR-M + 1 IIF). Regardless the GPS authority (2nd SOPS) has stated it
will wait until there are 18 SVs (which I estimate will take 10 years
to launch) before doing so. Until then MT0 will be broadcast on L2C,
resulting in no products being commercially available that can receive
L2C except for very high end receivers that are using semi-codeless
instead, and that are only capable of receiving L2C for future
proofing sake.
You are pointing at chipsets capable of running Galileo, not end user
products. Big difference.
If the Galileo authority uses a QZSS style test cycle, where after
each individual SV gets tested and checked its set healthy, without an
unnecessary minimum constellation coverage wait cycle, then you're
probably right. Perhaps wait until the third launch which should
result in 7 available SVs.

Marcelo Pacheco