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On the Edge: Tracking Slips and Creeps   July 1, 2011

The Earth’s surface is constantly shifting, being deformed as earthquake faults accumulate strain, and slip or slowly creep over time. Not long ago, scientists relied solely on seismometers to monitor the earth’s movements. Today, GPS has taken prominence as an indispensible tool. PANGA, the...More>>

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On the Edge: Driving Reality Home   May 1, 2011

A new navigation system looks to make driving safer by removing the need for drivers to look away from the road at their navigation device. With Wikitude Drive, as a driver moves down the road, the route is “drawn” onto the live video screen of an Android smartphone. How is this possible?...More>>

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On the Edge: Making Peace   April 1, 2011

Early morning on February 2, 2011, I went to work in my job as a road surveyor in the Bungoma District of Kenya. Here, land disputes are common, though the government is trying to reduce the conflicts by issuing land titles and certificates. I carried with me a small handheld GPS, the Magellan...More>>

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On the Edge: Iraq on the Map   March 1, 2011

As a geodetic surveyor, I served in the U.S Army for 10 years. During that time, my team and I developed a nationwide GPS infrastructure system called the Iraqi Geospatial Reference System (IGRS). We installed Continuously Operating Reference Stations (CORS) and High Accuracy Reference Network...More>>

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On the Edge: Galileo to the Rescue   February 1, 2011

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mergency Alert: Bus collision in Berchtesgaden, parking area Salzbergwerk. Many injured. Bus overturned, some thrown from vehicle, some trapped inside. Local temperature below freezing, snow falling. All crews respond immediately.” 
 The alarm operations center for the state of Bavaria...More>>

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On the Edge: Five Big Ones in Ten   January 1, 2011

Look back with me at the five 2010 GNSS events that most affected surveying, mapping, engineering, construction, and natural resource users. Each one had, or could have had, a significant effect on you and your work. More>>

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On the Edge: Tracking, Testing   November 1, 2010

One-hundred-twenty meters of test track, designed for repeatable dynamic position testing, run along the roof of the new Nottingham Geospatial Building at the University of Nottingham, UK. The figure-eight track provides an optimal controlled environment with test equipment aboard a...More>>

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On the Edge: Lost Graves, Trail of Tears   April 1, 2010

During the winter of 1838–39, the great Native American Cherokee Nation trekked across southern Illinois, in a forced removal by the U.S. government from their ancestral homeland in Tennessee. Harried, unequipped, and unsupported by their captors, thousands died on the Trail of Tears. Burial...More>>

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On the Edge: Sharing GNSS Wealth   March 1, 2010

Last year I helped coordinate a three-week workshop for 50 scientists from 15 African countries, introducing the basics of GPS for applications with socioeconomic benefits and scientific exploration. Held in Trieste, Italy, the workshop was quite successful, producing new initiatives on the...More>>

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On the Edge: Got a Fast Car   January 1, 2010

A team will attempt to shatter the world land speed record, with a GPS/GLONASS receiver riding the controls.More>>