Galileo

ESA’s GNSS Year in (P)review
January 23, 2015

ESA’s GNSS Year in (P)review

Johann-Dietrich Wörner, DLR chairman & future ESA DG. DLR/CC-BY photo

A year ago, European Space Agency Director General Jean-Jacques Dordain said ESA would launch six new Galileo satellites into orbit in 2014, making 10 fully functional satellites in orbit and allowing the European GNSS Agency (GSA) to launch its much-awaited Galileo early services.
 
Instead, only two satellites were launched in 2014, and those into the wrong orbits. At his year-ahead press conference in Paris on January 16, Dordain explained what went wrong and what we can expect in 2015.
 

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By Inside GNSS
Galileo Upgrade Will Cause Temporary Decline in Service
January 19, 2015

Galileo Upgrade Will Cause Temporary Decline in Service

Galileo Sensor Stations (GSSs) pick up Galileo signals in space (SIS) to perform clock synchronisation and orbit measurements which are fed back to the twin Galileo Control Centres to serve as the basis of the navigation message incorporating clock and position corrections and associated integrity data. Uplink Stations (ULSs) then uplink this navigation message to the Galileo satellite navigation payloads for rebroadcast to users. Telemetry, Tracking and Command Stations (TT&Cs) provide the link between the Control Centres and the satellite platforms. ESA figure

Galileo’s operation controllers will temporarily stop updating satellite orbital positions in the system’s navigation messages beginning near the end of this month in order to help implement upgrades in the ground mission segment, the European Space Agency (ESA) announced today (January 19, 2015).

Although the Galileo satellites will continue to transmit navigation signals, the generation and uplink of updated navigation messages will be interrupted during the last week of January for about five weeks.

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By Inside GNSS
The Party Crashers
January 18, 2015

The Party Crashers

These days getting the United States, Russia, China, and Europe to agree on a common policy seems to be an increasingly rare event.

That’s why the long-standing comity among system operators in the GNSS sphere is particularly notable and welcome. “Interoperable and compatible” is the first principle espoused by the four nations under the aegis of the International Committee on GNSS.

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By Dee Ann Divis
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Trimble Launches Timing Portfolio for Mobile Telecom
January 16, 2015

Trimble Launches Timing Portfolio for Mobile Telecom

ICM SMT 360 timing module

Trimble has introduced a new portfolio of GNSS-based time and frequency products to address the synchronization needs of the fast-growing 4G LTE (Long Term Evolution) small-cell telecom market.

Mobile telecom networks, whether 3G, 4G LTE, LTE-Advanced (LTE-A) wireless technologies, or a combination, need high-precision synchronization and syntonization.

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By Inside GNSS
janfeb15-WP-500px.jpg

From Data Schemes to Supersonic Codes

A decade has passed since the first GNSS system-level authentication protocols were proposed, and yet the current ongoing discussion is still, “Do we really need GNSS signal authentication?” Indeed, the current argument is whether we need authentication at the system level (the satellite broadcast service) or whether user-based authentication (anti-spoofing) is sufficient for a number of application requirements.

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By Inside GNSS
Galileo’s Commercial Service

Galileo’s Commercial Service

Figure 1; Tables 1 & 2

After some years of concept studies and simulations, the Galileo Commercial Service is taking off. The journey has started toward what can be the most accurate and secure worldwide satellite-based navigation services for civil use.

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By Inside GNSS
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CERGAL 2015: International Symposium on Certification of GNSS Systems and Services

CERGAL 2015: International Symposium on Certification of GNSS Systems and Services

The Waldspirale in Darmstadt

The 2015 CERGAL conference will be held in Darmstadt, Germany on July 7 and 8, 2015.

Qualification and certification of mission and safety critical applications are major milestones in the successful operational rollout of Satellite Navigation systems like GPS/EGNOS, Galileo, GLONASS and Beidou. This symposium will concentrate on measures already established and future activities that will assure SATNAV systems certification and operational safety.

This year’s main topics include:

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By Inside GNSS
InterGEO 2015
January 6, 2015

InterGEO 2015

Altes Schloss, Stuttgart, Germany

The 2015 InterGEO Trade Fair and Conference for Geodesy, Geoinformation and Land Management will take place at Landesmesse Stuttgart GmbH in Stuttgart, Germany from September 15 to 17, 2015.

It attracts 16,000 visitors from 92 countries who work in the surveying, geoinformation, remote sensing and photogrammetry fields. This is the event’s 21st year.

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By Inside GNSS
ION GNSS+ 2015

ION GNSS+ 2015

Bayshore Boulevard, Tampa, Florida

ION GNSS+ 2015 will take place at the Tampa Convention Center in Tampa, Florida from September 14 through 18. Tutorials will take place on September 14 and 15. The exhibit hall will be open on Wednesday and Thursday.

The Abstract Submission Deadline has passed.

Early bird registration ends August 14, 2015.

The conference is now called ION GNSS+ to highlight its expanded emphasis on GNSS and the rapidly evolving field of alternative navigation methods.

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By Inside GNSS
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