Anatomy of a Rescue: the Galileo Satellites

Well, the good news is that the European GNSS program has recovered and stabilized the condition of its first two two full operational capability (FOC) satellites, which had been delivered into incorrect orbits following their August 22 launch.

ESA Outlines Efforts to Rescue Wayward Galileo Satellites

The European Space Agency (ESA) released dramatic illustrations today (September 16, 2014) of the orbital locations of the two errant Galileo spacecraft launched on August 22, the intended orbit, and the locations of four In-Orbit Validation (IOV) sa...

Galileo 5 and 6 Operating Smoothly Despite Wrong Orbit

Galileo satellites 5 and 6 are safely under control, despite having been released on a lower and elliptical orbit instead of the expected circular orbit on August 22. Each satellite’s set of solar arrays is fully deployed and generating power, and op...

Roger Easton, Father Of GPS, Dies At 93

Roger Lee Easton, Sr., the father of GPS and pioneer of modern day navigation, died May 8 at his New Hampshire home, according to BusinessWire. After attending Middlebury College and the University of Michigan, Easton began work as a physicist in ...

New GPS satellite headed to upgrade navigation network

CAPE CANAVERAL -- A replacement Global Positioning System spacecraft for the world's best-known satellite constellation ascended into orbit Friday May 16th night aboard a Delta 4 rocket in a spectacular sendoff at sunset.

New GPS Civil Signal Rollout Will Aid Spoofing Countermeasures

The U.S. Air Force is set to start early implementation of the long-anticipated GPS Civil Navigation (CNAV) message at the end of this month, and will use the process to help develop new countermeasures against spoofing.

New GLONASS-M Satellite Begins Commissioning

A modernized GLONASS satellite launched on last week has begun its commissioning phase in slot 18 of the Russian GNSS constellations orbital plane 3. It was the first successful GLONASS launch since the loss of three spacecraft in the crash of a Prot...

Website downtime

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Two launches in 1Q 2014 for GPS and GLONASS

Galileo FOC launch tentatively scheduled for Summer 2014, no announced launch dates for Beidou.

Planned launches for each of the major GNSS constellations

Sites that track satellite launches are reporting that there are plans for one or more satellites to be launched into each of the existing global navigation satellite systems between the 4th quarter of 2013 and the 1st quarter of 2014.    

Global Positioning System (GPS)

Does the United States military’s involvement with GPS make you feel more or less secure? Tell us what you think and leave a comment below. Pictured here is the first military GPS five-channel receiver. It weighed 270 pounds! Credit: Rockwell Collins...