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: How Deep Is That White Stuff? Posted on 01 Sep 2014 in the Algorithms & Methods & Innovation categories.

In this month’s column, we look at a technique that uses interference fringes generated by signals arriving at an antenna directly from GPS satellites and those reflected by snow surrounding the antenna to measure its depth and how it varies over time. GPS for measuring snow depth; who would have thought? Read more»

ESA Discusses Galileo Satellite Power Loss, Upcoming Launch Posted on 20 Aug 2014 in the Galileo & GNSS News & Latest News categories.

During the European Space Agency (ESA) audio press conference held Wednesday morning in advance of Thursday’s launch of two Galileo satellites, there was extended discussion on the problem with the... Read more»

Testing of Luch-5V Begins Using PRN 140 Posted on 04 Aug 2014 in the Augmentation & Assistance & GNSS News & GPS Modernization & Latest News categories.

The L-band SBAS transponder on the third Luch Multifunctional Space Relay System geostationary satellite, Luch-5V (“v” is the third letter of the Russian alphabet), launched on April 28, has started... Read more»

Innovation: Not Just a Fairy Tale Posted on 01 Jul 2014 in the From the Magazine & GNSS & Innovation & Road categories.

A Hansel and Gretel Approach to Cooperative Vehicle Positioning
Several technologies are being developed for accurate cooperative vehicle positioning, but GNSS also has a role to play. In this month’s column, team of British researchers turn to a children’s fairy tale for inspiration in their development of a cooperative vehicle positioning approach using carrier-phase observations — another innovative application of real-time kinematic or RTK GNSS technology. Read more»

Russia Turns off Data from IGS GPS Tracking Stations Posted on 02 Jun 2014 in the Featured Stories & GLONASS & GNSS News & Government News & Latest News categories.

As announced by Russian Deputy Prime Minister Dmitry Rogozin on May 13, 2014, GPS tracking stations co-sponsored by U.S. interests have stopped making their data available to scientists and others.... Read more»

Innovation: Reducing the Jitters Posted on 01 May 2014 in the Featured Stories & GNSS & Innovation categories.

How a Chip-Scale Atomic Clock Can Help Mitigate Broadband Interference
Small low-power atomic clocks can enhance the performance of GPS receivers in a number of ways, including enhanced code-acquisition capability that precise long-term timing allows. And, it turns out, such clocks can effectively mitigate wideband radio frequency interference coming from GPS jammers. We learn how in this month’s column. Read more»

Delay in Setting Recently Launched Block IIF Satellite Healthy Posted on 17 Apr 2014 in the Featured Stories & GNSS News & GPS Modernization & Latest News categories.

The latest GPS Block IIF satellite, IIF-5 or SVN64 (operating as PRN30), was launched on February 21, 2014. Typically, GPS satellites are checked out and made operational within about a... Read more»

GLONASS Loses Control Again Posted on 16 Apr 2014 in the Featured Stories & GLONASS & GNSS & GNSS News & Latest News categories.

The GLONASS constellation has suffered a major problem for the second time this month. On Monday, April 14, eight GLONASS satellites were simultaneously set unhealthy for about half an hour,... Read more»