Galileo

Galileo FOC Anomaly Traced to Design Ambiguity, Says Inquiry Board

October 8, 2014By

The root cause of the anomaly that sent two Galileo satellites into the wrong orbit is a shortcoming in the system thermal analysis performed during stage design, and not an operator error during stage assembly, according to findings by an independent inquiry board. The Independent Inquiry Board was formed to analyze the causes of the anomaly occurring during the orbital injection of satellites... read more

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Improper Fuel Line Installation Led to Incorrect Galileo Orbit

October 6, 2014By

The cause of two Galileo satellites being released into the wrong orbit August 22 can be traced to improper installation of a hydrazine fuel line, according to Space News and the GalileoGNSS blog. The hydrazine fuel line was installed too close to a supercold helium line on the Fregat upper stage, which caused the hydrazine to freeze long enough to upset the Fregat stage’s orientation... read more

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Summer — and the Living Ain’t Easy

September 29, 2014By

Summer 2014 will be one that the €6.3 billion (US$8.2 billion) Galileo GNSS programme will need to chalk down to experience and hope to move on from. At the time of my last EAGER column, we were starting to get a hint that one of the four in-orbit Galileo IOV satellites was not functioning. We now know that it has... read more

Galileo’s Two Giant Steps Back

September 24, 2014By

Galileo’s first two full-operational capability (FOC) satellites have been in a safe state since August 28, under control from the European Space Agency’s (ESA’s) center in Darmstadt, Germany, despite having been released on August 22 into lower and elliptical orbits instead of the expected circular orbits. ESA continues investigating the possible exploitation of the out-of-position satellites to maximum advantage, despite... read more

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ESA Releases Diagrams Showing Galileo 5 and 6 Orbit

September 16, 2014By
Galileo_orbits_viewed_side-on-O

The fifth and sixth Galileo satellites have been in a safe state since August 28, under control from ESA’s center in Darmstadt, Germany, despite having been released on August 22 into lower and elliptical orbits instead of the expected circular orbits. The European Space Agency has released two diagrams showing the orbits. ESA said that the potential of exploiting the... read more

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Rockwell Tracks Galileo Signal with Secure Software Receiver

September 15, 2014By

Rockwell Collins has successfully received and tracked a Galileo satellite signal using a prototype GNSS receiver designed for secure military use. In 2013, Rockwell Collins received a $2 million contract from the Air Force Research Laboratory (AFRL) and the GPS Directorate to develop and demonstrate a Secure Software Defined Radio (S-SDR) GNSS receiver capability. By using multiple available satellite signals, improved and more... read more

Galileo 5 and 6 Operating Smoothly Despite Wrong Orbit

August 28, 2014By

Galileo satellites 5 and 6 are safely under control, despite having been released on a lower and elliptical orbit instead of the expected circular orbit on August 22. Each satellite’s set of solar arrays is fully deployed and generating power, and operations continue smoothly. The European ground teams deployed at the European Space Agency’s (ESA)  control centre ESOC in Darmstadt, Germany, in cooperation with satellite... read more

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Canadian Science Minister Announces Grant to Langley’s UNB Lab

August 26, 2014By
Professor Langley (center) discusses the UNB geodesy program with Canadian Science Minister Ed Holder (second from left.)

The Canadian Minister of State for science and technology, Ed Holder, visited the University of New Brunswick on July 28 to announce the awarding by the Natural Sciences and Engineering Council of $2.4 million to 28 UNB researchers. He was joined by Keith Ashfield, member of Parliament for Fredericton, where UNB is based, and Craig Leonard, the New Brunswick Minister... read more