November 25, 2012
Figures 4 & 5: Non-Gaussian Noises
Return to main article: "Non-Gaussian Noises"
By Inside GNSS
Global Navigation Satellite Systems Engineering, Policy, and Design
Global Navigation Satellite Systems Engineering, Policy, and Design
Return to main article: "Non-Gaussian Noises"
By Inside GNSS
FIGURE 1: (top) Device without case. (bottom) Device with case.Return to main article: "LTE, Positioning, and the Implications for GNSS Over-the-Air Testing"
By Inside GNSS
The GPS program has taken a fiscal hit that will delay critical plans to begin multi-satellite launches and could ultimately hamper the Air Force’s ability to keep the constellation at its current level of service.
The shortfall is just one of the challenges facing the program over the next four months as the current six-month budget extension winds down, the government’s ability to borrow runs out, and, barring a fast political deal, the onerous budget cuts set up under sequestration kick in.
By Dee Ann Divis
The seventh International Satellite Navigation Forum will take place during the Navitech exhibition at the Expocentre Fairgrounds in Moscow, Russia on April 24 and 25, 2013.
The plenary session will cover the national policy in the field of the use of navigation technologies – a hot topic.
By Inside GNSS
The 2012 Galileo Master receiving his prize: from left, Thorsten Rudolph, managing director of Anwendungszentrum GmbH Oberpfaffenhofen (AZO); Carlo des Dorides, executive director, the European GNSS Agency (GSA); winner Dirk Elias, Fraunhofer Portugal; Ulrike Daniels, AZO director of business development.Finding your way indoors will be even easier with a new smartphone app from two Portuguese research institutes that augments GNSS with positioning using ultra-low magnetic field communication (ULF-MC).
Fraunhofer Portugal and the University of Porto’s Faculty of Engineering received the €20,000 Galileo Master’s prize for their innovation in this year’s European Satellite Navigation Competition (ESNC 2012) awards. The ULF-MC application was the overall winner from among 406 completed entries (the most ever) submitted from more than 40 countries.
By Inside GNSS
Say what you want about the European capitol — one thing is for sure, Brussels is alive with conversation. With corporate high flyers and political decision makers tripping over one another on their way to long lunch breaks and after-dinner drinks, the chitchat can flow fast and furious.
If one is not careful, idle conversation can turn into rumor and rumor become a “buzz.”
By Peter Gutierrez
Digital Satellite Navigation and Geophysics: A Practical Guide with GNSS Signal Simulator and Receiver Laboratory
by Ivan G. Petrovski and Toshiaki Tsujii
Cambridge University Press 2012
ISBN-13: 9780521760546
This textbook describes GPS and GLONASS signals, as well as geophysical theory necessary for high accuracy calculation of satellite and user positions. The book is accompanied a free academic version of software for a software receiver and signal simulator.
By Inside GNSS
Francine Vannicola, Naval Research LaboratoryAs the forthcoming “Time and Navigation” opening next March at the Smithsonian National Air and Space Museum reminds us, modern navigation depends profoundly upon time — the more precise, accurate, and stable a navigation system’s timing is, the more precise, accurate, and stable its positioning capability.
By Inside GNSS
View the Equations for this article
Various designs of inertial/GNSS integrated navigation systems exist, with different architectures depending on the quality of sensors, the mission, the dynamics of the vehicle, and the non-linearity of the dynamics model, measurement model, or both.
By Inside GNSS
