Figures 1, 2 & 3: Finding the Right Algorithm
Return to main article: "Finding the Right Algorithm"
By Inside GNSS
Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
Return to main article: "Finding the Right Algorithm"
By Inside GNSS
Editor’s Note: On November 19, Senator Roger Wicker (R-Mississippi), a member of the Senate Armed Services Committee, filed an amendment (No. 2185) to the FY 2014 National Defense Authorization Act (S. 1197),
Section 1082, that would limit the construction of satellite
positioning ground monitoring stations controlled by any foreign
government on U.S. soil. Such construction would require certification
Receiver (on the right) and antenna (on the left) comprised the on-board unit used in both data collectionsWorking Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
By Inside GNSS
Q: How Does Non-Line-of-Sight Reception Differ From Multipath Interference?
A: It is well known that GNSS signals may be reflected by buildings, walls, vehicles, and the ground. Glass, metal, and wet surfaces are particularly strong reflectors.
By Inside GNSS
Some of the specific technical issues behind the latest delay for Galileo’s first full operational capability (FOC) satellites have already been reported. The story, as it is told, generally starts with a late navigation payload delivery by British firm Surrey Satellite Technology to the German prime contractor, OHB. Next, OHB ran into issues with the payload and the platform, further stretching out the timeline.
By Peter Gutierrez
The GPS program is setting a new space-system standard for cyberdefense, and now the federal government is creating a framework to help operators of critical infrastructure that largely rely on GPS to do the same.
The need to raise the bar is clear. Malicious coders, often backed by hostile nation-states or criminal organizations, are using automated tools to continuously probe for weaknesses:
By Dee Ann Divis
Return to main article: “Measuring High Bandwidth GNSS Signals for Indoor Positioning”
By Inside GNSS
First I thought to title these comments, “Learn from the People,” but readers might have confused me with Chairman Mao. (I spent some time recently around the Yangtze River, although I didn’t take the opportunity to swim in it as the Great Helmsman did.)
In any case, my thoughts turned toward the masses and the mass market as a result of working with the authors of an article in this issue on cooperative authentication. They have extended a chain of innovative proposals drawing on the crowdsourcing concept of data sharing among nearby GNSS users or “peers.”
By Inside GNSS
Significant progress has been made in integrating two classes of small, unmanned aircraft into the national air space (NAS), an area of considerable interest for GNSS companies whose products provide navigation and guidance for many of the unmanned systems.
By Dee Ann Divis
Q: What is the effect of user and CORS height on NRTK performance?
Working Papers explore the technical and scientific themes that underpin GNSS programs and applications. This regular column is coordinated by Prof. Dr.-Ing. Günter Hein, head of Europe’s Galileo Operations and Evolution.
By Inside GNSS
