Program: Galileo
Also called GNSS-2 or Galileosat
European navigation program initially to be operational in 2008 (now 2016?).
With the financial participation of China ($248 million), India ($200
million?), Israel, South Korea (EUR 5 million) and Ukraine. Discussions are
also underway with Argentina, Australia, Brazil, Canada, Chile, Malaysia,
Mexico, Morocco and Norway.
Composed of 30 (now only 22) satellites in MEO (24000 km, 3 planes, 55°)
including 3 spares. No GEO satellite. The Galileo satellites should weigh 700
kg, use 1500 W power and a nominal duration of 13 years. It should contain 4
atomic clocks and a search and rescue system (
Sarsat)
and take part on the Meosar (Medium Earth Orbit Search And Rescue). Should
transmit 10 signals in the L-band (5 services), two of them will be ciphered
for government use.
The system will be able to integrate with
GPS
so that the US system users beneficiate from it. The MBOC (multiplexed binary
offset carrier) will enable compatible receivers to use both signals and bring
precision to 3.5 m (from GPS 3A series).
The system should cost at least EUR 3.6 billion. The private sector would
finance EUR 1.5 billion. The system should cost EUR 220 million a year to
operate. The EU will pay EUR 200 million in 2008 and then reduce that amount by
EUR 50 million each year until it reaches 0 in 2012.
In Sep 2004, two consortia are bidding to operate the program: Eurely (Alcatel,
Finmeccanica, Vinci, SFR and Capgemini) and iNavSat (EADS, Thales, Inmarsat and
SES Global). Decision has been delayed and a merger of the offers requested.
In Jun 2005, the joint bid was approved. The evaluation of this joint proposal,
compared to both individual offers showed a significant reduction in the
financial contribution from the public sector.
In Dec 2005, the location of the facilities was agreed. The Headquarters of the
Galileo Concessionaire will be located in Toulouse, France. The Operations
Company will be located in London, United Kingdom. The two Control Centres
(Constellation and Mission) will be located in Germany and Italy as well as the
two Performance Evaluation Centres supporting the concessionaire headquarters.
Spain will host facilities that include redundancy for the Control Centres.
In Jan 2006 the contract for the test phase was signed, worth EUR 1 billion. It
covers the development and construction of the first four Galileo constellation
satellites and part of the ground infrastructure for Galileo, including the
full testing of the subsystem.
In May 2007, the program is freezed. Either it will be relaunched with public
funds only (2.4 billion EUR to be found and contracts will be scrapped) or
canceled. Decision no earlier than Oct 2007.
In Aug 2007, EADS, Thales and Finmeccanica appoint themselves prime contractor
(EADS in charge of the satellites, Thales and Finmeccanica in charge of the
ground infrastructure). That was cancelled by the Nov 2007 deal.
In Nov 2007, a compromise was found for the use of EU funds to finance the full
program (EUR 3.4 billion). The program would be relaunched with lighter
objectives and with competition. The deal is split in 6 main parts and the
tasks are to be distributed evenly among prime contractors and subcontractors.
A new tender will be launched, with 6 lots (satellites, launchers, computer
programmes, ground stations, control stations and the system's operation).
In Jul 2008,
Inmarsat
was been awarded a contract by DLR, the German Aerospace Center, to provide
Payload In-Orbit Test (IOT) services for the four satellites forming the
Galileo In-Orbit Validation (IOV) phase.
In Oct 2009, the EC decided to order only 22 Galileo satellites instead of the
28 to 30.
In Jan 2010, OHB Technology with SSTL won a contract to build 14 satellites for
EUR 566 million, to be launched by Ariane (2 satellites per Soyuz launch) from
2012. The payloads were ordered from SSTL in Apr 2010 for EUR 230 million.
In Jun 2010, a cost overrun of EUR 1.5 billion is rumored, and more funds are
to be found.
In early 2012, 8 additional satellites were ordered from OHB (worth EUR 250
million)
The in-orbit validation was successfully achieved in early 2014. Service
officially started in Dec 2016.
The first satellites are suffering from clock failing: each satellite has 4
clocks; among the first 72 clocks launched in Jan 2017/ 10 has failed. The
clocks are built by Spectratime, Switzerland. The issue was found in a
component of the rubidium clocks, that will be replaced on future satellites.
The hydrogen maser clocks need improvment too.
The FOC satellites are owned by European Union's GSA (Global navigation
satellite Systems Agency)
In July 2019, a 6-day outage occured. The issue was caused by an equipment
malfunction in both the Galileo control centres.
Status: not officially operational, only 26 launched out of 30
satellites needed
Before Galileo became operational, the EGNOS payload was included in
Artemis
and 2
Inmarsats.
It sends signals that will be used to enhance
GPS
measurements absed on the GPS L1 frequency.
Egnos will provide GEO Ranging (R-GEO) with 3 additional satellites, GNSS
Integrity Channel (GIC) and Wide-Area Differential (WAD) to broadcast
differential corrections. Egnos started operational service on 16 Jun 2005 and
become approved for aircraft landing in March 2011.
In Mar 2009, the European Commission contracted with SES to carry an EGNOS
payload on
Astra 4B.
In Oct 2009, EGNOS became officially operational. The EC decided to order only
22 Galileo satellites instead of the 28 to 30.
In 2014 2 payloads were added:
Amazonas 4A
+
Astra 5B.
Then in 2019 on
Eutelsat 5 West B
Another payload is to be hosted by Eutelsat (named EGNOS GEO-4)
First launch initially planned in 2024. The procurement process calls
for 2 selectees that will each provide 2 satellites, with options for up-to
12.
In Jan 2021 two contracts were awarded for 6 satellites each to Thales Alenia
Space (italy) and Airbus Defence and Space (Germany) for a total of EUR1.47
billion. First satellite should be launched in 2024. Leonardo's hydrogen clock
was selected again and 12 modules were ordered.
http://www.gsa.europa.eu/
http://www.galileo-pgm.org/
http://ec.europa.eu/enterprise/policies/satnav/galileo/index_en.htm
http://www.esa.int/esaNA/galileo.html
http://www.egnos-pro.esa.int/
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