Global Navigation Satellite Systems Engineering, Policy, and Design
An innovative positioning engine based on a safety-oriented paradigm uses a dual-frequency GNSS receiver, automotive cameras, accurate maps, low-cost inertial sensors and vehicle odometry. The real-time integrity layer bounds the error of each estimated value with a confidence level for safe navigation.
By Inside GNSS
This summer, French railway company SNCF performed successful tests of an autonomous train, using Galileo-enabled receivers. The vehicle ran a distance of four kilometers with the help of remote control. SNCF intends to develop its own prototypes of autonomous freight and passenger trains by 2023.
By Inside GNSS
Professor David Last described his life in crime during the Institute of Navigation’s GNSS+ 2012 conference. He was late coming to that line of work, he noted, having only been tapped by the police after his retirement from teaching at the University of Wales.
By Dee Ann Divis
Yuletide cheer laces the Scottish atmosphere as we examine what’s been accomplished and what’s yet to be done. This year’s International Navigation Conference in Edinburgh provides a focal point.
By Peter Gutierrez
To gauge the present state of mind of the GNSS and PNT community, the state of play in application development, and the state of the art in positioning, navigation and timing technology, we asked four international experts for their perspectives. Here are the questions posed to them.
By Inside GNSS
Very occasionally, history repeats itself, in oddly nuanced ways. I stand today at such a juncture. Nineteen years ago Glen Gibbons, the founder of this magazine, hired me as his lieutenant for another satnav publication—for which he was also the founding editor.
By Alan Cameron
The Defense Department urged spectrum regulators this week to reject a proposal by Virginia-based Ligado Networks to build a wireless terrestrial communication system that could, it said, interfere with GPS.
By Dee Ann Divis
“The future of navigation is inertial plus . . . some other sensor,” states Michael Braasch at the opening of this month’s webinar. “One sensor suite determines position, velocity and attitude.”
By Inside GNSS
The Department of Transportation (DOT) selected 11 firms to demonstrate technologies that could be used to back up the services provided by GPS should GPS signals be jammed, spoofed or unavailable.
By Dee Ann Divis
The complex and mission-critical needs of the autonomous vehicle market demand innovation at higher levels in several different sensors and in sensor integration. A new photonic chip technology offers promise in providing high-volume, low-cost manufacture of high-end, tactical-grade performance fiber-optic gyros (FOGs)for inertial navigation in GNSS-obstructed environments.
By Inside GNSS
The grapevine was abuzz on Halloween with chatter that the Federal Communications Commission (FCC) might soon act on a long-pending request from Ligado Networks to use spectrum near the GPS frequencies to support terrestrial communications.
By Dee Ann Divis
Researchers at the Universität der Bundeswehr München (German Federal Armed Forces University, Munich) have performed real-time kinematic (RTK) positioning with dual-frequency smartphones, using the GNSS raw measurements to the user via the Android API.
By Inside GNSS
The GPS III Contingency Operations Program (COps) successfully connected with the first GPS III satellite on orbit on October 21. The Air Force can now operationally command and control the powerful new GPS III satellites
By Inside GNSS