TAG: In-Orbit Validation

Power Loss Created Trouble Aboard Galileo Satellite

July 8, 2014By and

In an update to our July 2 story (recapped below), correspondent Peter de Selding wrote in Space News on July 3 that the trouble aboard the fourth in-orbit (IOV) Galileo satellite arose from a sudden, unexpected loss of power. The power outage flashed on May 27, shutting down the satellite’s E1 signal. The signal “re-established itself almost immediately. But as... read more

Occupy Media Space Now EGNOS and Galileo Mission

June 29, 2014By

By Peter de Selding The message to the recent European Space Solutions conference in Prague was simple enough: EGNOS is here, so let’s use it; Galileo is almost here, so let’s promote it. Neither task is straightforward. Take the European Geostationary Navigation Overlay Service (EGNOS), the European piece of a near-global network of terminals on geostationary satellites linked to networks... read more

Galileo Maritime Tests Followed Route of Viking Ships

April 24, 2014By

Results are being processed from the first Galileo maritime trials outside of mainland Europe. The long-range, high-latitude testing spanned the North Sea, following the same historical sailing route that Viking dragon-ships used 1200 years ago. Ancient manuscripts record Viking navigators relied on “sunstones” to find their way — archaeologists believe these may have been polarizing crystals to pinpoint the Sun... read more

The System: Galileo Accomplishes In-Orbit Validation

March 1, 2014By

Galileo Accomplishes In-Orbit Validation Nucleus of Four Now Operational: It “Works, and Works Well” The European Space Agency (ESA) announced fulfillment of the in-orbit validation (IOV) of Galileo on February 10. IOV was achieved with four satellites, the minimum number needed to perform navigation fixes. “IOV was required to demonstrate that the future performance that we want to meet when... read more

Galileo Achieves In-Orbit Validation

February 10, 2014By

The in-orbit validation of Galileo has been achieved, according to the European Space Agency (ESA). Europe now has the operational nucleus of its own satellite navigation constellation in place — the world’s first civil-owned and operated satnav system. Four is the minimum number of satellites needed to perform navigation fixes. In 2011 and 2012, the first four satellites were launched... read more

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Four Galileo Birds Sighted over Asia

April 2, 2013By
Figure 1. Positions obtained by only Galileo E1 Open Service (the antenna is located at the roof of the Ta Quang Buu library building inside HUST campus)

Scientists in Hanoi, Vietnam, send word that on March 27 the four Galileo in-orbit validation satellites were visible at the same time in the sky over that Southeast Asian country for nearly two hours (from 2:15 to 4:00 GMT) while transmitting a valid navigation message. The research team of the NAVIS Centre at Hanoi University of Science and Technology (HUST)... read more

PLAN Group Tracks Galileo Satellites for Positioning in Canada

March 15, 2013By

by James T. Curran, Mark Petovello, and Gérard Lachapelle Within a day of their initial activation over central Europe on March 12, Galileo satellites were visible over North America. The PLAN Group of the University of Calgary was successful in capturing and processing the signals from these satellites as they emerged. Galileo PRN 11, 12, and 19 were found and... read more

Septentrio Makes Galileo and Four-Constellation Position Fixes

March 14, 2013By

Septentrio became the first receiver manufacturer to report an autonomous real-time position calculation using Galileo IOV satellites, with its own standard commercial receiver. The company based in Leuven, Belgium announced on March 12 that it performed a first autonomous real-time Galileo position, velocity, and timing (PVT) calculation, based on live Interface Control Document (ICD)-compliant Galileo messages from the four Galileo... read more

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