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Innovation: Seeing the Light

July 1, 2015 - By

We look at the development of a generalized vision-aided integrity monitor for precision relative navigation applications. A vision-aided integrity monitor could be extremely valuable in augmenting existing precision relative navigation systems, such as GPS, for many different safety-critical aerospace applications. read more

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Street Smart: 3D City Mapping and Modeling for Positioning with Multi-GNSS

July 1, 2015 - By

A particle-filter-based positioning method using a 3D map to rectify the errors created by multipath and non-line-of-sight signals on the positioning result delivered by a low-cost single-frequency GPS receiver takes a multi-GNSS approach, using the combined signals of GPS, GLONASS and QZSS. The method outperforms conventional positioning in availability and positioning accuracy. It will likely be fused with other sensors in a future pedestrian navigation application. read more

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Thad Allen Discusses eLoran at GEOINT 2015

July 1, 2015 - By

In this exclusive interview, Admiral Thad Allen, former commandant of the U.S. Coast Guard, discusses PNT alternatives to GPS for navigation, including eLoran and the activation June 19 of a signal on an eLoran tower in preparation for a timing signal trial. Art Kalinksi interviewed Adm. Allen during GEOINT 2015, held June 22-25 in Washington, D.C. Kalinski is the monthly columnist for Geointelligence... read more

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INTERGEO 2015

July 1, 2015 - By

INTERGEO 2015, to be held Sept. 15-17 in Stuttgart, Germany, is the world’s leading conference trade fair for geodesy, geoinformation and land management. read more

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