From the Magazine

Programmed multicopter flies through the Arctic autonomously

November 17, 2015By

How do you successfully pilot a UAV in the remote expanses of the Arctic Ocean when the compass can’t provide reliable positioning data? Engineers on board the Alfred Wegener Institute’s (AWI’s) research icebreaker Polarstern specially programmed a multicopter, allowing it to navigate despite the deviations produced by the Earth’s magnetic field near the North Pole. The researchers recently celebrated the... read more

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Out in Front: Readers, marketing partners co-engineer GPS World redesign

November 15, 2015By

GPS to the power of PNT. Or, as I like to think of it, GPSPNT. We are rapidly entering — or we have already entered — the era in which we say “GPS” but we really mean so much more. We mean GNSS: GPS + GLONASS + Galileo + BeiDou. We mean all of the above plus satellite-based augmentation systems (SBAS), now... read more

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Taking Position: Solving PNT problems on Mars

November 13, 2015By

In the novel The Martian, an astronaut must navigate around a duststorm using his wits. By Tracy Cozzens Managing Editor Last year on my way home from ION  GNSS+, I spotted a bright orange book in the San Francisco airport. The Martian, by Andy Weir, is now a major motion picture — a wonderful movie, but one that left out a... read more

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UAV real-time: Data use in a lightweight direct georeferencing system

November 12, 2015By

By Christian Eling, Lasse Klingbeil, Markus Wieland, Erik Heinz and Heiner Kuhlmann Direct georeferencing with onboard sensors is less time-consuming for data processing than indirect georeferencing using ground control points, and can supply real-time navigation capability to a UAV. This is very useful for surveying, precision farming or infrastructure inspection. An onboard system for position and attitude determination of lightweight... read more

Research Online: Positioning with LTE signals

November 12, 2015By
Rover positions obtained with 2D LTE versus GPS track.

Positioning with LTE Signals An alternative to GNSS in urban canyons can be provided by signals from cellular base stations, particularly new signals from long-term evolution (LTE) networks, since LTE coverage will be high in cities. Wide LTE downlink bandwidth provides good resolution of multipath components, which also assists positioning. A test used a universal software radio peripheral N210 synchronized... read more

Launchpad: IoT chip, simulators, threat detector

November 12, 2015By

Featuring new products in the OEM, survey, mapping and unmanned aerial vehcile sectors. read more

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PNT Roundup: STOIC technology to augment or substitute for GPS

November 11, 2015By
The X-47B unmanned combat aircraft receives fuel from an Omega K-707 tanker on April 22 while operating in the Atlantic Test Ranges over the Chesapeake Bay. This test marked the first time an unmanned aircraft refueled in flight. The X-47B is a tailless, jet-powered, blended-wing-body aircraft capable of semi-autonomous operation and aerial refueling.

The Defense Advanced Research Projects Agency (DARPA) selected Rockwell Collins to develop technologies that could serve as a backup to GPS. The research, being conducted as part of DARPA’s Spatial, Temporal and Orientation Information in Contested Environments (STOIC) program, aims to reduce warfighter dependence on GPS for modern military operations. read more

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System of Systems: New BeiDou TMBOC Signal Tracked

November 11, 2015By

New BeiDou TMBOC Signal Tracked Similar Structure to Future GPS L1C China’s new third-generation BeiDou satellites are broadcasting some new signals in space. The newest signal, which just began broadcasting from a satellite launched on Sept. 30, is similar to the future GPS L1C signal with time-division BOC(1,1) and BOC(6,1) signals. Such a type of modulation is called time-multiplexed binary... read more

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