TAG: In-Orbit Validation

Galileo Satellites Encapsulated for Launch

August 19, 2014By
The medium-lift workhorse has been raised into a vertical orientation as the mobile gantry – which provides protection during the “upper composite’s” integration – is moved into position.

Europe’s latest Galileo satellites have been sealed within their launch fairing, atop the Fregat upper stage that will carry them into their final orbit on August 21, ushering in the system deployment phase and paving the way for the start of initial services. Galileo SATs 5-6 are scheduled to lift off at 12:31 GMT from Europe’s Spaceport in French Guiana on top... read more

Two More Galileo Satellites Scheduled for August 21 Launch

August 14, 2014By
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The next satellites in Europe’s Galileo satellite navigation system will be launched on August 21, ushering in the system deployment phase and paving the way for the start of initial services, according to the European Space Agency (ESA). Galileo SATs 5-6 are scheduled to lift off at 12:31 GMT (14:31 CEST, 09:31 local time) August 21 from Europe’s Spaceport in French... read more

Galileo’s Troubled E20 Satellite Is Alive

August 7, 2014By

The troubled Galileo E20 satellite restarted E1 signal transmission Wednesday evening, August 6. Galileo E20, also known as GSAT0104, the fourth in-orbit validation (IOV) satellite, has been set “unavailable until further notice” according to the European GNSS Service Centre because of a sudden, unexpected loss of power on May 27. Based on a selected set of IGS MGEX stations and all CONGO stations, the... read more

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Power Loss Created Trouble Aboard Galileo Satellite

July 8, 2014By and
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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
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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

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