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.
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
A new methodology targets sub-meter GNSS accuracies in the consumer realm for applications such as augmented reality and visually impaired navigation. Recent Android RTK smartphone services in a real-time environment achieve accuracies below 50 cm. Can these be matched with PPP?
By Joshua Critchley-Marrows, et al.
An assisted GPS direct positioning estimation (DPE) technique for urban environment copes with a full spectrum of direct-line-of-sight and non-line-of-sight or multipath conditions. A new approach using signal visibility and specular reflection predictions within the DPE shows the potential to reduce positioning error from approximately 30 to 10 meters.
At the 12th EU Space Conference in Brussels, Thierry Breton made his first appearance as the new European Commissioner for Internal Market, and a remarkable appearance it was. In his position, Breton is charged with overseeing two of the European Commission’s Directorates General, that of Communications Networks, Content and Technology, also known as DG CONNECT, and Defense Industry and Space, also known, cleverly, as DG DEFIS. In French, defis means “challenges.”
By Peter Gutierrez After years of delay, we see movement toward a back-up service for PNT and ensuring that critical infrastructure owners and operators take steps to limit vulnerabilities.
By Dee Ann Divis
Inspired by hard-working parents and an innate sense of compassion, GSA Head of Market Development Fiammetta Diani has traced a remarkable path to prominence in the world of satellite-based navigation.
European Space Agency (ESA) top brass welcomed journalists to the Agency’s headquarters in Paris for its annual New Year’s press launch. On hand was the Director General as well as ESA’s Galileo guru Paul Verhoef, who spoke one-on-one with Inside GNSS.
By Peter Gutierrez
The chairman of the Federal Communications Commission (FCC) told two U.S. Senators in January that his agency could not complete a decision on Ligado Network’s license modification by the end of 2019 because of a late-in-the-year response from a key federal agency.
By Dee Ann Divis
An Android mobile application, GNSS Compare can provide a real-time position using Galileo and GPS dual frequencies. It directly logs data from the real-time algorithms, and the retrieved files are used for analysis.
By Ciuban & Krainski, et al.