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About Richard B. Langley

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Richard B. Langley is a professor in the Department of Geodesy and Geomatics Engineering at the University of New Brunswick (UNB) in Fredericton, Canada, where he has been teaching and conducting research since 1981. He has a B.Sc. in applied physics from the University of Waterloo and a Ph.D. in experimental space science from York University, Toronto. He spent two years at MIT as a postdoctoral fellow, researching geodetic applications of lunar laser ranging and VLBI. For work in VLBI, he shared two NASA Group Achievement Awards.

Professor Langley has worked extensively with the Global Positioning System. He has been active in the development of GPS error models since the early 1980s and is a co-author of the venerable “Guide to GPS Positioning” and a columnist and contributing editor of GPS World magazine. His research team is currently working on a number of GPS-related projects, including the study of atmospheric effects on wide-area augmentation systems, the adaptation of techniques for spaceborne GPS, and the development of GPS-based systems for machine control and deformation monitoring. Professor Langley is a collaborator in UNB’s Canadian High Arctic Ionospheric Network project and is the principal investigator for the GPS instrument on the Canadian CASSIOPE research satellite now in orbit.

Professor Langley is a fellow of The Institute of Navigation (ION), the Royal Institute of Navigation, and the International Association of Geodesy. He shared the ION 2003 Burka Award with Don Kim and received the ION’s Johannes Kepler Award in 2007.

Posts by Richard B. Langley

Innovation: Attitude determination and RTK positioning using low-cost receivers Posted on 01 Jun 2021 in the From the Magazine & Innovation categories.

Getting It Better

While RTK positioning and attitude determination is readily done with high-end equipment, it is still a challenge to get good results for kinematic platforms with low-cost receivers. In this month’s column, we learn how a team of researchers in France is trying to do just that. Read more»

In the beginning, there was innovation Posted on 07 Sep 2020 in the Opinions categories.

When GPS World published its first issue in January 1990, only 15 GPS satellites had been launched, including the 10 prototype or Block I satellites. And four of those early... Read more»

GPS III ‘Magellan’ starts signal transmission Posted on 28 Apr 2020 in the From the Magazine & GNSS & Latest News categories.

By Peter Steigenberger, Steffen Thoelert, Oliver Montenbruck and Richard B. Langley The first GPS III satellite, “Vespucci,” was launched in December 2018, started signal transmission in January 2020, and was... Read more»

First light: Broadcast of L1C by GPS III Posted on 19 Mar 2019 in the From the Magazine & GNSS categories.

Less than three weeks after its launch, the first GPS III satellite, SVN74, started transmitting navigation signals. SVN74 uses the pseudorandom noise (PRN) code number G04 previously used by the... Read more»

Happy Pi Day Posted on 14 Mar 2019 in the Featured Stories & Innovation categories.

In honor of 3.14.2019, here is what GPS World’s Innovation column editor Richard Langley wrote about π in an article (“A Sideways Look at How the Global Positioning System Works“) nine... Read more»

Mapping method provides parking data for urban navigation Posted on 12 Feb 2019 in the Featured Stories & From the Magazine & Mapping categories.

A new map method opens up parking continuous-environment mapping for enhanced low-cost urban navigation. Collectively recorded context data by many identical platforms gather similar sensor readings when operating in a given area.... Read more»

Innovation: Low-cost single-frequency positioning in urban environments Posted on 09 May 2018 in the Featured Stories & Innovation categories.

Making It Better
Real-world tests show improved single-frequency GNSS positioning in urban environments using GLONASS alongside GPS, as well as the effect of different antennas and adaptive weighting of observations. Results? Single-frequency accuracies below one meter. Read more»

Innovation: QZS-3 and QZS-4 join the Quasi-Zenith Satellite System Posted on 09 Feb 2018 in the From the Magazine & GNSS & Innovation categories.

Constellation completed
The first, or prototype, Block I QZSS satellite was launched in 2010 and, based on the positive test results from this satellite, an additional three satellites were launched in 2017, completing a four-satellite constellation. In this month’s column, we examine the recent developments of this unique and innovative navigation system. Read more»