GNSS

Innovation: Ground-Based Augmentation

April 2, 2014By
FIGURE 5. Research aircraft D-IBUF (Dornier Do 128-6).

Combining Galileo with GPS and GLONASS
While a GPS-based GBAS will offer improved navigation services for aircraft, might these services be even better if the systems were to use satellites from other constellations besides GPS? In this month’s column, the authors show how GBAS protocols might be modified to accommodate multiple constellations, offering results of preliminary tests using GPS, GLONASS, and Galileo simultaneously. read more

This article is tagged with , and posted in Aviation, Aviation & Space, From the Magazine, GNSS, Innovation, Receiver Design

Expert Advice: Galileo, EGNOS Open Europe’s Road Ahead

April 2, 2014By
Tim Reynolds

This spring, two Brussels conferences focused on new possibilities and modes of transport enabled by satellite navigation, showing the added value delivered by current and future European GNSS solutions. read more

This article is tagged with and posted in Expert Advice & Leadership Talks, GNSS Opinions, Transportation Opinions

GLONASS Gone . . . Then Back

April 2, 2014By
glonass_problem-O

In an unprecedented total disruption of a fully operational GNSS constellation, all satellites in the Russian GLONASS broadcast corrupt information for 11 hours, from just past midnight until noon Russian time (UTC+4), on April 2 (or 5 p.m. on April 1 to 4 a.m. April 2, U.S. Eastern time). This rendered the system completely unusable to all worldwide GLONASS receivers.... read more

GPS III Alternative Payloads Canvassed

April 1, 2014By

GPS III prime contractor Lockheed Martin has heard from six companies concerning alternate designs for the GPS III satellite payload, according to reports. A company spokesperson said “constantly canvassing the industrial base to see what’s out there” is merely part of Lockheed’s standard business practice. Lockheed Martin partner Exelis Geospatial Systems currently supplies the payload, as it has for all... read more

This article is tagged with and posted in GNSS News, GPS Modernization

The System: Galileo Countdown, PNT Advisory Board

April 1, 2014By

Galileo Countdown to 10 by Year’s End Signs Point Toward Early Services in December, If ESA Delivers A February conference on the European Union’s space policy in Brussels sought to set a course for 2020 and close official ranks behind the prospect of early Galileo services at the end of this year. Much in the business community’s perception of the... read more

New Galileo Station Opens in Azores

April 1, 2014By
ESA's Santa Maria ground station is located on the ‘Montes das Flores’ (Hill of Flowers) on Santa Maria island in Portugal's mid-Atlantic Azores. It includes a Galileo Sensor Station.

The latest addition to Galileo’s worldwide ground infrastructure has been made in the mid-Atlantic, on Portugal’s Santa Maria island in the Azores. This new Galileo Sensor Station joins a far-flung network of stations monitoring signal quality, clock timings and positioning of the Galileo satellites orbiting Earth. Its formal opening ceremony on March 26 was presided over by the Azores’ Regional... read more

This article is tagged with and posted in Galileo, GNSS News, Latest News

A Mass-Market Galileo Receiver

April 1, 2014By
mass-market-galileo-rx-O

Its Algorithms and Performance
The authors test three mass-market design drivers on a chip developed expressly for a new role as a combined GPS and Galileo consumer receiver: the time-to-first-fix for different C/N0, for hot, warm, and cold start, and for different constellation combinations. read more

This article is tagged with and posted in Featured Stories, From the Magazine, Galileo, Receiver Design