From the Magazine

Innovation: Checking the accuracy of an inertial-based pedestrian navigation system with a drone

I’m Walking Here!
An ingenious navigation technique makes use of how the human body works to develop an accurate pedestrian navigation system — one whose accuracy has been checked using drone imagery. read more

Innovation: Laser ranging to GNSS satellites

May 24, 2017By

In this article, author Urs Hugentobler looks at the history of laser ranging to navigation satellites, how that ranging has improved the accuracy of the orbits of those satellites, and what the future portends for this important contribution to space geodesy. read more

Road navigation using multiple dissimilar environmental features

May 23, 2017By

New navigation paradigms combining GNSS and inertial with additional sensors can increase overall reliability and power robust road navigation. A feasibility study tests a barometer, a magnetometer and a camera looking at road signs, and concludes that such sensors examining environmental features can supply the necessary context for frequently traveled or shared routes. read more

Research: Infrasound direction-finding, positioning system

May 23, 2017By

By John P. McIntire, Duy K. Nguyen, Eric T. Vinande, and Frederick C. Webber U.S. Air Force Research Laboratory / Presented at ION ITM, January 2017 Infrasound refers to sound frequencies below the threshold of human hearing, around 20 Hz or less. There are a variety of natural sources of infrasonic emissions, including thunderstorms, avalanches, meteors, earthquakes, volcanos, and windstorms... read more

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ESA: Space debris enters ‘more feared exponential trend’

May 23, 2017By

In April, the European Space Agency (ESA) hosted the 7th European Conference on Space Debris at ESA’s Satellite Control Centre in Darmstadt, Germany. There, international experts discussed ways to head off the threat of space junk. ESA estimates there are roughly 5,000 objects larger than 1 meter, 20,000 objects over 10 centimeters and 750,000 “flying bullets” of around one centimeter.... read more

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Intelligent transportation systems require ‘the ego vehicle’

May 8, 2017By

Most activity so far in the PNT community has centered around the questions of “Where am I?” and “Where am I going?” and “How fast am I going?” Positioning, navigation and timing. Seemingly that should about cover it. But no. Mapping comes into the picture: “What fixed objects are in my environment?” This is actually a corollary of “Where am... read more

V2V countdown: Major players on how we get there

May 2, 2017By

We asked major players in the connected vehicles marketplace for their views on expected deployment timelines, remaining challenges such as reliable positioning technology, integration with existing systems, and the implications on autonomous vehicle technology. read more

System of Systems: Brexit may oust UK from Galileo work

April 26, 2017By

Brexit May Oust U.K. from Galileo Work Participation of the United Kingdom space industry in Galileo may be in doubt as negotiations get underway on details of the U.K. withdrawal from the European Union (EU). European Commission officials signaled that they want to rely solely on producers within the European Union for the block’s major programs, citing security concerns such... read more

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