June 5, 2017 - June 8, 2017
Dayton, Ohio USA
Working Papers • November/December 2016
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.
GNSS Solutions • November/December 2016
Q: What are the challenges of ray-tracing for GNSS applications?
A: Simulating the propagation and reception of GNSS signals in complex environments is a challenging task. Indeed, the user always has to trade off between the computation time and the reliability of the output. Moreover, the motion of GNSS satellites, atmospheric effects, and building geometry are always difficult to model.
Inside GNSS • November/December 2016
Spacecraft in low Earth orbit (LEO), at altitudes below 3,000 kilometers, remain within the main Global Positioning System (GPS) signals’ Earth coverage. Spacecraft employing GPS at these altitudes enjoy signal availability and navigation and timing performance emulating that of terrestrial users.
March 14, 2017 - March 16, 2017
December 7, 2016 - December 8, 2016
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May 8, 2017 - May 11, 2017
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Ventures • November 1, 2016
NovAtel has signed a contract with Stanford University for a study to determine how GNSS technology can deliver a positioning system that meets safety and accuracy requirements for autonomous land vehicles, the company said.
NovAtel said the study, to be conducted at Stanford's GPS Research Laboratory, will build on similar aircraft research. In addition, the research will include concepts for high integrity carrier-phase algorithms, threat models, and safety monitors for improving autonomous vehicle transportation, the company said.
Ventures • October 31, 2016
Mayflower Communications Company said its submarine anti-jam GPS enhancement (SAGE) supports the U.S. Navy's multifunction mast antenna System (OE-5388) upgrade to improve communications systems and navigation warfare (NAVWAR) requirements.
October 31, 2016
Experts working on standards for airborne equipment using GPS, Galileo, and a satellite-based augmentation system (SBAS) appear to have found a way to deal with an unusual problem — too many satellites.