Global Navigation Satellite Systems Engineering, Policy, and Design
In the past decade, there has been a sharp increase in GNSS outages due to deliberate GNSS jamming. Receivers in LEO are uniquely situated to detect, classify and geolocate terrestrial GNSS jammers. This article explores two-step and direct geolocation of terrestrial GNSS jammers from LEO.
By Inside GNSS
This research analyzes the wide-area 2022 Texas GPS jamming incident using data from airborne receivers through Automatic Dependent Surveillance – Broadcast (ADS-B) and ground receivers at Continuous Operating Reference Stations (CORS).
By Inside GNSS
The new blockchain-based, decentralized CORS reference network provides low-cost access to triple-frequency full-constellation correction signals for centimeter accuracy, while also allowing users to earn financial rewards for contributing qualified CORS data back to GEODNET.
By Renee Knight
Hexagon | NovAtel is excited to announce the release of version 9.00 of its industry-leading Waypoint post-processing software, including Inertial Explorer, Inertial Explorer Xpress and GrafNav/GrafNav Static. Building on decades of GNSS positioning and algorithm development expertise, Waypoint 9.00 includes BeiDou Phase III support and a refreshed, streamlined GUI for users to import, process and export their data faster and more efficiently.
By Inside GNSS
As of August, 2023, operational Galileo GNSS satellites, with some exceptions, have been updated and are now transmitting an improved I/NAV message. Users will see an enhancement in the Galileo E1 Open Service (OS) performance in terms of robustness and a significant reduction in time to first fix in challenging environments, with both unassisted and assisted GNSS. Backward compatibility is assured, with no impact on legacy receivers and low complexity implementation within OS receivers.
By Peter Gutierrez
The latest safety award for Rivian is an Insurance Institute for Highway Safety for the R1S as a Top Safety Pick+ for 2023. It accomplishes this and other safety advances with its Driver+ ADAS (advanced driving assistance system), which integrates a set of sensors along with driver attention, GNSS, and IMU modules. At AutoSens Detroit 2023, Abdullah Zaidi, Engineering Lead and Senior Manager at Rivian, presented his take on the state and near future of ADAS sensors including the benefits of adding lidar and the importance of better localization sensors for Level 3 systems.
By Kevin Jost
When Mike Horton introduced GEODNET at the ION GNSS+ conference in 2021, he recognized it was a bit of a radical idea that may be met with skepticism—but he also knew it provided a solution to a common frustration, and that’s access to low-cost GNSS corrections with centimeter level accuracy.
By Renee Knight
Xona Space Systems is now working with the Air Force Research Laboratory (AFRL) and the U.S. Space Force to accelerate the development of its Low Earth Orbit (LEO) Positioning, Navigation and Timing (PNT) architecture that leverages the company’s PULSAR service.
By Inside GNSS
Santa Clara, CA-based startup Anello Photonics has announced a GNSS INS module that it says is the world’s smallest optical gyro inertial navigation system for GPS-denied navigation and localization. It is powered by the company’s optical gyroscope technology and AI-based sensor fusion engine, the combination engineered to deliver high-accuracy positioning and orientation for applications in the agriculture, construction, robotics, and autonomous vehicle space.
By Kevin Jost
Experimental and simulation results from Starlink, OneWeb, Orbcomm and Iridium LEO satellite constellations are presented, demonstrating the efficacy and tremendous promise of the proposed LEO-agnostic blind opportunistic navigation frameworks.
By Inside GNSS
Christopher Marshall Wheeler of Broomfield, Colorado, the segment manager for new markets at Hexagon’s Autonomy & Positioning division, passed away on July 19.
By Inside GNSS
The Joint Research Centre of the European Commission tested seven advanced alternative sources of positioning navigation and timing (A-PNT) platforms through a performance assessment campaign, proving there are viable alternatives to GNSS available in the commercial market today.
By Inside GNSS
NextNav recently tested its assured PNT TerraPoiNT system with LTE and 5G signals, demonstrating the solution is a viable alternative to conventional GPS and GNSS.
By Inside GNSS
