Global Navigation Satellite Systems Engineering, Policy, and Design
We trace back through time to witness the progress in anti-spoofing solutions and describe how we arrived at the designs being implemented today; principally GPS’ CHIMERA, Galileo’s OSNMA, and ICAO’s SBAS data scheme.
Critical infrastructure has a compelling need to infer the assurance of PVT estimates—as do users in general. However, traditional PNT platforms do not offer a principled way to infer assurance from multiple anti-spoofing (A-S) techniques, situational awareness (SA) information, and other auxiliary sources such as network data. Here we introduce, a PNT Trust Inference Engine (PNTTING) that can assess PNT trust according to probabilistic models with rigorous semantics.
Estimating and quantifying errors in GNSS and other navigation user equipment is a common task and is important for understanding what roles or missions a given device is suitable for. Most users are familiar with the concept of accuracy, which is usually expressed as a bound on navigation error (relative to unknown truth) at a probability level between 0.5 and 0.95. This article expands on the concept of accuracy to estimate error bounds that are only violated with far smaller probabilities.
Researchers in the PRoPART project developed a 10-centimeter accurate and robust position determination system for autonomous vehicles, demonstrating a safe merge of a fully automated heavy truck between two cars driving at speed in an adjacent lane.
By Peter Gutierrez
The Federal Communications Commission ignored a technical standard defining radio-frequency interference. The five commissioners licensed powerful terrestrial broadcast next to the satellite band, exposing national defense and critical infrastructure to harm.
The Federal Communications Commission should really consider updating its motto. “Firm, fast, flexible, and fair” has a bit of an old-fashioned ring. As mottos go, it fails to keep up with the times.
By Alan Cameron
The European Space Agency (ESA) awarded two contracts to Thales Alenia Space concerning system evolution of the European Geostationary Navigation Overlay Service (EGNOS).
By Inside GNSS
A connected ambulance demonstrator develops a multitude of communications options on board, in preparation for a full healthcare connectivity development and test center in the UK.
By Inside GNSS
Just like the kids valiantly doing their homework during this strange, removed time, PNT enthusiasts young and old around the world can put their isolation to good use by honing skills at home. “GPS: An Introduction to Satellite Navigation,” the massive online open course created by Frank van Diggelen and the late Per Enge, is available on YouTube.
By Inside GNSS
Britain’s own satellite navigation system, envisioned to fill the country’s Galileo void created by Brexit, may never see the light of day. Government officials don’t want to spend tax revenues to meet projected increasing costs.
By Inside GNSS
A new GNSS/INS receiver, the AsteRx-i D UAS from Septentrio, specifically targets integration into unmanned aerial systems (UAS). It provides centimeter-level RTK positioning and 3D attitude. It features a 44 pin connector compatible with 3rd-party integrations, as well as event marker inputs to accurately time-stamp camera shutter events.
By Inside GNSS
A new marine-certified quad-band GNSS receiver, the LD900 from VERIPOS, delivers accurate and reliable positioning in demanding offshore environments. The LD900 can track four GNSS frequencies simultaneously to ensure a precise position is always available at sea.
By Inside GNSS
A new mobile app, Galileo Green Lane, facilitates the free movement of freight, reduces waiting times at European Union borders, and prioritizes essential goods during pandemic response. The app uses Galileo positioning services to address the needs of border control authorities and truck drivers, with two intuitive user interfaces. The app was developed by the European GNSS Agency (GSA) in collaboration with the European Commission.
By Inside GNSS
