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Inside GNSS magazine • Volume 3, Number 7

Fall 2008

Online News, Articles, and Features

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Cover Story

GNSS Watch Dog: A GPS Anomalous Event Monitor

Sorting out adverse signal anomalies from normal phenomena can be difficult — especially in real-time and in safety-critical applications.Researchers at Ohio University’s Avionics Engineering Center have developed a system that does just that.

GNSS World

Galileo’s New Era

Step by Step, the Program Advances

Replacement of the Galileo public-private partnership (PPP) approach to building and implementing the system infrastructure, authorization of a final budget to complete a constellation with fully operational capability, and passage of a new regulation on Galileo have resolved most of the roadblocks and removed much of the doubt surrounding the program.

Technical Article

Don't Dump That Data!: Thorough Use of GNSS Measurements

Robust GNSS signal processing depends on capturing essential
information and abandoning the rest of the data. But interference,
masking, attenuation, ionosphere scintillation, and multipath often
cause signal degradation. Using flight-validated experience, the author
describes methods for extracting maximum performance in the roughest

Technical Article

Femtocells: Bringing Reliable Location and Timing Indoors

Telecom services providers are betting that self-installed femtocells — small local versions of wireless base stations — will catch on with customers. A hybrid TV/assisted GPS approach may offer the best way to simplify these home and office setups.

Technical Article

A Soft Touch: Sogei’s GPS/Galileo Software Receiver and Institutional GNSS Applications in Italy

Hardware GNSS receivers can be hard on users — especially in applications requiring special features and functionality, such as customs enforcement. Faced with expensive proprietary solutions, Sogei, a government-owned Italian company, decided to come up with a software-based receiver of its own.


“Working Papers” and “GNSS Solutions” are on vacation. They will return in the November/December 2008 issue.

Columns & Editorials
Thinking Aloud

The Six Percent Solution: More Science and Engineering Students Needed

We are floating in a sea of technology and forgetting how to swim

Actually,  six percent isn’t the solution, it’s the problem — fewer
than six percent of high school seniors in the United States plan to
pursue degrees and careers in science or engineering.
That’s the discouraging fact of American life discovered in a recent
study by the Aerospace Industries Association (AIA).

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