Global Navigation Satellite Systems Engineering, Policy, and Design
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.
A wheel-mounted inertial measurement unit provides high-rate (2 kHz) bias-free data for vehicle navigation, road-quality measurement systems and instantaneous wheel dynamics estimation for vehicle stability control.
By Oleg Mezentsev & Jussi Collin
In the years since civil and commercial use of GPS and GNSS became common in the mid-1990s, a variety of software tools have been developed to perform offline analyses of GNSS performance and data collected from GNSS receivers. Some of these tools are part of commercial software packages such as Matlab [1] or STK [2]. This article focuses on tools that are freely available (as of early 2020) and are standalone or work with commercial software.
By Sam Pullen
Despite a surge of activity at the end of the year, the FCC has not yet ruled on a request by Ligado Networks to use its spectrum for a terrestrial network. It is unclear what will inspire federal regulators to finally decide.
When Dorota A. Grejner-Brzezinska left her native Poland to study GPS in the United States, little did she know her work there would go on for three decades and take her to the world’s farthest reaches. Today, as University Distinguished Professor, Lowber B. Strange Endowed Chair, Associate Dean for Research, College of Engineering and director of the Satellite Positioning and Inertial Navigation (SPIN) Lab at The Ohio State University, she leads a team of front-line GNSS researchers that is revolutionizing how we map and navigate.
By Peter Gutierrez
We’ve a long history as a learned society,” Royal Institute of Navigation Director John Pottle told the plenary audience, “solving navigation problems is no longer a simple matter. It’s not all about the technology anymore. What we think we do, uniquely, in the world is to bring different disciplines together who share a common interest in navigation.”
By Peter Gutierrez
