TAG: In-Orbit Validation

Galileo IOV Satellites Begin Transmitting Navigation Messages

January 18, 2013By

News courtesy of CANSPACE listserv. Two of the Galileo In-Orbit Validation satellites, E11 and E12, began transmitting navigation messages on their Open Service signals on January 17. Several stations in the Cooperative Network for GNSS Observation and the International GNSS Service’s Multi-GNSS Experiment network received the messages. The epheremis data in the messages appears to be updated every 10 minutes. read more

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Transmissions from Galileo Satellite IOV-4 Begin

December 13, 2012By

News courtesy of CANSPACE listserv. The Technische Universitaet Muenchen has reported that transmissions of the L1/E1 signal from Galileo satellite IOV-4 (FM-4) started at about 17:15:10 GPS Time December 12. The navigation signals of both of the recently launched in-orbit validation satellites have now been activated. A number of stations in the Cooperative Network for GNSS Observation as well as... read more

Transmissions from Galileo Satellite IOV-3 Have Begun

December 3, 2012By
Javier Benedicto, ESA's Galileo Project Manager, looks on as Europe's own satellite navigation system performs its historic first position fix of longitude, latitude and altitude. The position fix took place at the Navigation Laboratory at ESA’s technical heart ESTEC, in Noordwijk, the Netherlands on the morning of 12 March, with an accuracy between 10 and 15 metres – expected taking into account the limited infrastructure deployed so far. Horizontal accuracy reached as high as 6 m. The left-side screen shows the position fix while the right side screen shows the position of the four Galileo satellites and their current signal coverage.

According to a report from the Technische Universitaet Muenchen, transmissions of the L1/E1 signal from the recently launched Galileo satellite IOV-3 (FM-3) started at about 13:55:20 GPS Time December 1. Transmissions from IOV-3 of the E5 signal began December 2. By December 4, all three Galileo bands, including E6, were being broadcast, according to the European Space Agency (ESA). Several... read more

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The System: Patent Attempt on GPS, Galileo Signals Appears Done

December 1, 2012By

One of the GNSS controversies of the past year ended, not with a bang nor with a whimper, but like the fog, silently creeping away on its little cat feet. The UK patent applications against the interoperative GPS/Galileo signal design appear to have been dropped. Vague rumblings emerged throughout spring and summer this year that two British technologists, backed by... read more

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Leadership Awards 2012: Pairing LEOs with GNSS Birds

December 1, 2012By

This article reproduces the acceptance speeches given by the winners of GPS World’s 2012 Leadership Awards, at the Leadership Dinner in Nashville in September. The Leadership Dinner was sponsored by Lockheed Martin and Deimos Space. read more

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Latest Galileo IOV Satellites on Orbit

November 19, 2012By

News courtesy of CANSPACE listserv The Galileo In-orbit Validation (IOV) satellites launched on October 12 (Flight Model 3 and 4), have now been positioned in their designated orbits, according to tracking data from the U.S. Joint Space Operations Center. A plot of the IOV constellation is now available. The four IOV satellites are in two orbital planes separated by about... read more

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Launch Tomorrow for Second Pair of Galileo IOV Satellites

October 11, 2012By

The European Space Agency (ESA) will be launching a second pair of Galileo IOV satellites tomorrow from Europe’s Spaceport in French Guiana. The satellites will ride a  Soyuz ST-B rocket from Europe’s Spaceport in French Guiana. Launch is scheduled for 18:15:00 GMT (20:15:00 CEST) October 12.  Live streaming will begin at 17:48 GMT (19:48 CEST) for about one hour. From... read more

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First Results: Precise Positioning with Galileo Prototype Satellites

September 10, 2012By
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By Richard B. Langley, Simon Banville, and Peter Steigenberger. For a brief period, and for a few hours on certain days, signals from the first four orbiting Galileo satellites could be received by state-of-the-art multi-frequency, multi-constellation GNSS receivers. Although not intended for actual positioning tests, the satellites did provide a first opportunity to assess the prototype Galileo signals in the... read more

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