Global Navigation Satellite Systems Engineering, Policy, and Design
The U.S. and European GNSS programs will launch satellites within a week of each other next month.
A GPS Block IIF satellite is scheduled to be lifted into space on October 4 and a second pair of Galileo in-orbit validation (IOV) satellites, on October 10.
Meanwhile, the European GNSS Agency (GSA) opened its new office in Prague, Czech Republic, last Thursday (September 6, 2012).
By Inside GNSS
"BeiDou Applications – Opportunities and Challenges" is the subject of the 2013 China Satellite Navigation Conference to be held in Wuhan, China on May 15, 16 and 17, 2013.The event will be held at the Wuhan International Conference & Exhibition Center (696 Jiefang Road, Hankou, Wuhan, China).
It is sponsored by the China Satellite Navigation Office and a number of other official PRC agencies.
The official language of the conference is Chinese with simultaneous English translation.
By Inside GNSS
Raytheon Company and Lockheed Martin have successfully completed the first launch readiness exercise for the U.S. Air Force’s next-generation GPS III satellites.
By Inside GNSS
The Federal Aviation Administration (FAA) has told those awaiting their slice of the GPS civil program budget that the funds are on the way.
The money, which is supposed to support that portion of the GPS program springing from the needs of civilian users, has been held up for months. In fact, as of late August — with less than 40 days left to go in the fiscal year — the money had not been transferred to either the military’s GPS Directorate or the National Coordination Office (NCO) for Space-Based Positioning, Navigation, and Timing (PNT).
By Dee Ann Divis
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
SIDEBAR: Genene Fisher’s Compass Points
As Solar Cycle 24 rolls around toward its maximum peak next May, when a hundred or more sunspots may appear during the course of a single day, no single navigator stands at the helm to guide the hundreds of companies, research groups, users, and policy workers through the uncharted realm of spiking solar activity and its inevitable effects on GNSS.
By Inside GNSS
This article describes an integration of a single-frequency GNSS, two-antenna heading system with low-cost inertial and magnetic field sensors in order to improve the availability and reliability of pure GNSS attitude determination. This method calculates a redundant attitude solution in an error-state Kalman filter using different sensor setups. As a result, the process of carrier phase ambiguity resolution accelerates.
By Inside GNSS
TABLE 1. Spoofer antenna requirements for various hardened GPS signal types
“Here is Edward Bear, coming downstairs now, bump, bump, bump, on the back of his head, behind Christopher Robin. It is, as far as he knows, the only way of coming downstairs, but sometimes he feels that there really is another way, if only he could stop bumping for a moment and think of it. And then he feels that perhaps there isn’t.”
– A.A. Milne, Winnie-the-Pooh
Is our faith in the integrity and infallibility of the Global Positioning System misplaced or, perhaps, insufficiently grounded?
By Inside GNSS
El Centro Europeo de Astronomía Espacial (ESAC) Organized by the European Space Agency with the collaboration of a number of national space organizations, this intensive course will cover GNSS error sources related to radiowave propagation and interference effects.
It is aimed at engineers, geodesists, physicists and advanced students with appropriate degrees and a knowledge of GNSS fundamentals, statistics and signal processing.
By Inside GNSS
Noordwijk beach in December"Multi-GNSS Navigation Technologies: Galileo’s Here" is the theme of the 6th ESA Workshop on Satellite Navigation Technologies.
The European Space Agency event will be held from December 5 to 7, 2012 at ESTEC, at the northern tip of Noordwijk, Netherlands.
Online registration is open until December 4 at the website below. After that, you must register at the conference itself.
By Inside GNSS
Marriott Waikiki BeachIt’s a big year for the Institute of Navigation, with the venerable ION GNSS 2012 happening this September in Nashville and the new and highly anticipated Pacific PNT conference opening for the first time next April in Honolulu.
ION GNSS 2012, the granddaddy of all GNSS events, begins shortly in Music City, USA: Nashville, Tennessee.
It’s scheduled during the third week of September at the downtown Nashville Convention Center, a five minute walk to the Country Music Hall of Fame and other attractions.
By Inside GNSS
Nominal architecture of a GPS/Galileo PRS receiverThe United States and the European Union are talking about how U.S. agencies might use the secure signal planned for Galileo to better fulfill their various responsibilities.
By Dee Ann Divis
