These signals will be implemented on the Galileo Open Service and the GPS IIIA new L1 civil signal known as L1C.

The United States and the European Union (EU) have agreed to use the multiplexed binary offset carrier (MBOC) for a common GPS-Galileo signal for civilian use. In the future, this will enable combined GNSS receivers to track the GPS and Galileo signals with higher accuracy, even in challenging environments that include multipath, noise, and interference.

These signals will be implemented on the Galileo Open Service and the GPS IIIA new L1 civil signal known as L1C.

MBOC will appear first on the Galileo L1F signal transmitted by Galileo In-Orbit Validation Element (GIOVE) spacecraft, the first of which — GIOVE-A — has been in orbit since its December 27, 2005, launch. A GPS IIIA launch is not currently expected before 2013. The larger GIOVE-B satellite, which more closely matches the fully operational Galileo spacecraft design, is scheduled for launch in the final days of this year.

On September 3 the spacecraft — built by a production team led by prime contractor Thales Alenia Space and including Telespazio, EADS Astrium, and ESA — began its journey from the Thales Alenia plant in Rome to the ESA-ESTEC facility in Noordwijk, The Netherlands.

GIOVE-B has successfully passed all preliminary tests, including the thermal-vacuum test that duplicates the satellite’s in-orbit environment, and will undergo further tests in The Netherlands before being sent to the Baikonur cosmodrome to start launch preparations.

Building on 2004 Pact
Building on the historic cooperative agreement on GPS and Galileo signed between the two parties in June 2004, a joint working group overcame technical challenges to design interoperable optimized civil signals that will also protect common security interests. Incorporating MBOC into both GPS and Galileo is expected to enhance commercial opportunities for the development of new GNSS products and services.

Matthias Ruete, director general of the European Commission’s energy and transport agency responsible for Galileo, said the announcement “underscores Europe’s commitment to interoperability between Galileo and GPS and to managing the Galileo program in an innovative partnership with the United States. The international GNSS community, including the U.S., will have full and transparent access to information on how to access Galileo and GPS services.”

U.S. State Department Principal Deputy Assistant Secretary Reno Harnish said, “The U.S.-EU collaboration that produced this innovation and led to its joint adoption reflects the strong working relationships that we have developed on GPS and Galileo. This technical milestone represents the next step in our ongoing commitment to open standards and market-driven innovation that will benefit all users world wide.”

The cooperative agreement reflects a marked turnaround in U.S. attitudes toward Galileo. In the early years of the George W. Bush administration, numerous attempts were made to forestall implementation of what was then seen as a rival to GPS.

Related article:

Inside GNSS Sept-Oct 2007, page 43: "The MBOC Modulation," by members of the Galileo Signal Task Force

The post It’s MBOC for common Galileo-GPS civil signal appeared first on Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design.

Matthias Ruete has been named as director-general of the European Commission’s Directorate- General for Energy and Transport (EC DG-TREN), which has overall responsibility for implementation of the Galileo program on behalf of the European Union (EU). He replaces François Lamoreaux.

Ruete is very familiar with the Galileo program, having served as director of DG-TREN’s international relations, trans-European transport and infrastructure networks directorate from 1998-2000, which oversaw development of Europe’s GNSS program during its middle years.

From 2001 to 2004 he was a director in the EC’s Directorate-General for Enlargement, involved with negotiations and preparations for nations entering or applying to become members of the EU.

Last year he was a director with the DG for Enterprise and Industry directorate responsible for coordination of competitiveness.

Copyright 2006 Gibbons Media and Research LLC

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