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December 3, 2007

Transport Ministers Put Galileo Back on Track

On Friday (November 30), the European transport council voted unanimously to adopt a European Commission (EC) financial scheme that would lead to a fully operational constellation in 2013, if the project can stay on schedule.

GNSS Solutions • November/December 2007

Galileo Open Service and Weak Signal Acquisition

Q: How will the Open Service Galileo signal in space change the acquisition process in GNSS receivers?

A: The Galileo signal in space (SiS) for the Open Service (OS) essentially differs from the GPS C/A-code by its use of the binary offset carrier (BOC) modulation and the adoption of longer spreading codes. Moreover, two different channels have been allocated for the OS: the data and the pilot channels. The former carries the navigation message whereas the latter is data-free.

November 26, 2007

EU Finance Ministers Approve Galileo Funds

At its November 23 meeting, the European Union’s Economic and Financial Affairs Council (ECONFIN) approved €940 million in supplementary funding during fiscal year 2008 to support a public procurement of the Galileo system.

Thinking Aloud • November/December 2007

GNSS Believer

Technology-agnostic. Now there’s an interesting term.

I first heard it from engineering staff at the Federal Communications Commission as they backpedaled away from a premature assumption that network-based solutions would meet the agency’s E911 mandate for wireless phones. After, that is, their assumption was confronted with a more accurate, more far-reaching GPS technology.

Working Papers • January/February 2006

GNSS Interoperability

Working Papers • May/June 2006

MBOC: The New Optimized Spreading Modulation

On June 26, 2004, the United States of America and the European Community (EC) established the “Agreement on the Promotion, Provision and Use of Galileo and GPS Satellite-Based Navigation Systems and Related Applications” (A copy of this agreement can be found at the website of the U.S. Space-Based Positioning, Navigation, and Timing (PNT) Executive Committee through the URL address provided in reference [1] in the “Additional Resources” section near the end of this article.)

Working Papers • April 2006

GNSS Meteorology on Moving Platforms

Although GNSS is primarily designed for positioning, navigation, and timing applications, it can also be used to determine a quantity that is of major interest for meteorologists and climate researchers, namely, integrated water vapor. This gas plays a critical role for the energy balance of our atmosphere and is actually responsible for approximately 62 percent of the natural greenhouse effect. Consequently, the distribution of water vapor, as well as its spatial and temporal behavior, is important for climate predictions and weather forecasts.

Working Papers • March 2006

Platforms for a Future GNSS Receiver

GNSS receiver technology has changed dramatically since the first reception of a GPS signal. It evolved from complex electrical circuits — partly analog — tracking only one satellite at a time to today’s sophisticated, small multichannel receivers. The core of a modern receiver is contained in one or more highly sophisticated chips that perform all the receiver’s tasks, starting with signal processing, followed by positioning, and often ending at application processing.

November 12, 2007

EU Finance Ministers, UK Parliamentary Body Debate Galileo Plan

On Tuesday (November 13) European Union (EU) finance ministers will address the European Commision (EC) proposal for all-public funding of the Galileo program.

The proposal announced by the EC in September would use the 2007 and 2008 budgetary reserves for agriculture and administration — totaling about €2.5 billion — to augment a €1-billion Galileo allocation already in place. European transport ministers will take up the issue again in December.

Inside GNSS • Fall 2007

Galileo: Redirecting a Stuttering Program

Europe’s Galileo program continues to struggle through a difficult passage as it looks ahead to crucial meetings of the European Union (EU) transport, economic, and heads of state meetings in November and December.

The lingering death last spring of the public-private partnership (PPP) approach to building Europe’s GNSS threw the program back into the political crucible that has always proven more arduous than the technical challenges.

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