Jul 1, 2009
By:Len Jacobson
In the litigious society that we have become, it is not surprising to see GPS as a regular fixture in many civil and criminal proceedings in our nation?s courts. A new and growing outlet for the legal profession, it has also engaged many of the older GPS pioneers who, instead of just retiring, have found a relatively lucrative way to spend their free time. They now form the cadre of GPS expert witnesses, without whom many of the cases involving positioning could not be settled equitably.
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 | Meeting GNSS Challenges 2009–2010
May 1, 2009
Who will move the frontiers of knowledge, the industry, and user applications forward in 2009 and 2010? What strategies will they employ and what risks will they undertake? In this fourth annual special report, we gain insight from key indivduals shaping the future of GNSS, and pick five technologies to watch.
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 | Apr 1, 2009
By:Börje Forssell
The IMES indoor messaging system aims to provide seamless positioning at the room level.
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January 27, 2009 | Charlemagne Conference Center | Brussels, Belgium
Mar 1, 2009
By:Alan Cameron
The Growing Galileo Conference, sponsored by the European GNSS Supervisory Authority in Brussels on January 27-28, marked the official roll-out of the FP7 Second Call for Galileo exploratory applications — and 40 million euros of available funding. Industry experts gave their views on the GNSS business climate, related success using GPS, and looked ahead to sat nav market prospects and Galileo market-readiness.
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 | Competitive runners and tech enthusiasts power a running revolution.
Mar 1, 2009
By:M. Elizabeth Cannon, Gérard Lachapelle, Sidney P. Kwakkel
In recent years, GPS has made a strong impact on the running community. Wrist-top GPS-equipped running computers tell runners not only their current pace, but also provide trajectory, speed, distance traveled, and a host of other scrutable statistics. The combination of position and speed anywhere at anytime brings obvious advantages to the throng of runners.
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 | Jan 1, 2009
By:James C. Litton
For all the talk about and good will towards interoperability of GNSS systems, one might assume that such hands-across-v arious-waters agreements are nearly or tacitly accomplished. While this is not out of the question, neither can it be termed as within sight. Detailed discussions at the December 8?12 meeting of the International Committee on Global Navigation Satellite Systems (ICG) in Pasadena revealed how far we have to go. I attended the meeting and witnessed a few of the devils at work in these details.
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 | Dec 1, 2008
By:Eric Gakstatter
My October 28 live web seminar "Is Dual-Frequency GPS -- As We Know It -- Becoming Obsolete?" was the most well-attended webinar to date for GPS World! I really enjoyed it and look forward to the next one in February 2009. The October webinar focused on the Department of Defense decision to discontinue supporting P(Y) on GPS L1 and L2 for civilian users after December 31, 2020.
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 | Dec 1, 2008
Would the GNSS community gain more from new signals, or from more satellites? The hypothetical debate continues from November issue, with audience questions.
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 | Nov 1, 2008
By:Francisco Salabert
For the user to combine systems using interoperable integrity mechanisms, the integrity information received from each of the systems must be based on the same concepts and definitions. There is a risk of having different receiver standards at regional level, and the lack of an agreed GNSS baseline on integrity could delay the ongoing transition to GNSS in aviation. Thus, reinforcing international cooperation to agree on a common base integrity mechanism will take a step towards interoperability and improved performance under a multi-constellation architecture.
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