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January 23, 2015

ESA’s GNSS Year in (P)review

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.
 

January 19, 2015

Galileo Upgrade Will Cause Temporary Decline in Service

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.

Thinking Aloud • January/February 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.

New Builds • January 16, 2015

Trimble Launches Timing Portfolio for Mobile Telecom

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.

January 16, 2015

RTCA Begins Standards Work on Quartet of New GNSS-Related Aviation Devices

The group that sets standards for aircraft navigation receivers is planning work on four new types of devices including the first multi-signal and multi-constellation aviation receivers and a more cost effective navigation system to help planes traverse GPS-impaired areas.

Working Papers • January/February 2015

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.

Inside GNSS • January/February 2015

Galileo’s Commercial Service

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.

Inside GNSS • January/February 2015

Extending the Reach of SBAS

March 2, 2015
Sleaford, United Kingdom
July 7, 2015 - July 8, 2015
Darmstadt, Germany
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