Galileo Update, Ionospheric Model Shared at ENC

April 23, 2015By

This year’s European Navigation Conference (April 7–10 in Bordeaux, France) got underway with “Good news from up there .…” Galileo’s seventh and eighth satellites launched successfully in late March, the European Space Agency (ESA) plans four more satellites to reach orbit in 2015, and space maneuvers for Galileo 5 and 6 have been completed, with a recovery plan currently under... read more

NASA’s James L. Green to Headline ION GNSS+ 2015

April 22, 2015By
James L. Green, director of Planetary Science for NASA.

James L. Green, director of Planetary Science for NASA, will take the audience on a journey navigating through the solar system at The Institute of Navigation’s ION GNSS+ 2015 Conference. Green’s keynote address will show new worlds and new discoveries through the eyes of NASA’s planetary spacecraft. The conference takes place Sept. 14-18 at the Tampa Convention Center in Tampa, Florida. At NASA, Green is responsible for solar system exploration... read more

GPS IIF-9 Satellite Declared Operational

April 21, 2015By

GPS IIF-9, launched March 25, has been declared healthy and operational by the U.S. Air Force. The Air Force issued the following Notice to NAVSTAR Users (NANU). The next GPS satellite, GPS IIF-10, is scheduled for launch on June 16, with GPS IIF-11 following three months later, on September 16. read more

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GPS Glitch Two Years Older than First Stated

April 15, 2015By

On Wednesday, the GPS Directorate said further data analysis shows that a technical error affecting some Boeing GPS IIF satellites first appeared in 2011, two years earlier than originally stated, according to a Reuters report. The error first appeared one year after the GPS IIF satellites became operational. The error affects the way the ground control system builds and uploads messages transmitted by the satellites, but... read more

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Air Force to Award Additional GPS III Satellite Contracts

April 15, 2015By

The U.S. Air Force plans to award multiple contracts for companies to demonstrate their ability to build GPS III satellites, according to a report by Mike Gruss of Space News. The Air Force expects to award the contracts — worth up to $6 million — during this calendar year. Lockheed Martin Space Systems of Denver is the current GPS III satellite contractor, building the first eight GPS III satellites. The... read more

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Fifth Galileo Colloquium Planned for October

April 15, 2015By
Galileo satellite signals. (Image credit: ESA)

The fifth International Colloquium on Scientific and Fundamental Aspects of the Galileo Programme will be held in Braunschweig, Germany, Oct. 27–29. Since 2007, the worldwide scientific community has met every two years to discuss the scientific possibilities of Galileo and other Global Navigation Satellite Systems (GNSS). This colloquium will bring together members of the European scientific community and their international... read more

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GPS III Update: First Satellite Ready for Testing

April 14, 2015By

Report from the 31st Space Symposium COLORADO SPRINGS, Colo. — I had the pleasure of having an early breakfast on this beautiful Colorado morning with Mark Stewart, VP and program manager at Lockheed Martin in Denver for the GPS III program. Mark was very upbeat, a normal state for him actually, and stated that GPS III SV1 was fully integrated — payload, bus... read more

New Galileo Pair Head to Working Orbit

April 10, 2015By

Europe’s two newest Galileo satellites — launched March 27 — have carried out maneuvers to take them down to their working positions in orbit. Both satellites are performing well. Galileo 7 and 8 were launched into a circular 23,522 km altitude orbit about 300 km above their final orbit. Using their onboard thrusters, the two Galileo satellites have performed all their Launch and... read more