Global Navigation Satellite Systems Engineering, Policy, and Design
In a letter made public late Friday, the point person for all federal agency use of frequencies told commercial spectrum regulators his agency could not support approval of Ligado Networks’ request to use satellite frequencies for a terrestrial wireless network.
By Dee Ann Divis
Calling all automotive engineers — and anyone involved in designing or promulgating the fast-oncoming world of autonomous driving.
For driverless vehicles, current GNSS meter-level positioning accuracy still serves for lane-level detection. But hazardous misleading information poses a serious, disruptive and critical safety concern.
By Inside GNSS
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
u‑blox released the NEO‑M9N, the first module based on the company’s new robust meter‑level M9 global positioning technology platform, designed for demanding automotive, telematics, and UAV applications.
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
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
Trimble has introduced a compact, high-precision GNSS board designed for unmanned aerial systems (UAS): the Trimble UAS1. The board’s simple connectivity and configuration allow UAS system integrators to easily add satellite-based positioning
By Inside GNSS
“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
Two new all-silicon inertial measurement systems, developed to meet the specific demands of the small satellite and launch vehicle markets, have been released by Silicon Sensing Systems Ltd, and are on display at this month’s Space Tech Expo in Bremen, Germany.
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