TAG: U.S. Air Force

The System: Leap-Second Confusion

March 1, 2015By

The United States Civil GPS Service Interface Committee (CGSIC) has issued a notice about a problem some receivers are having implementing the correct time. The U.S. Coast Guard Navigation Center has received reports of synchronization issues since the implementation of a leap second on Jan. 21. Users experiencing this problem should contact the receiver manufacturer for a firmware or software... read more

Obstacles in the Orbit Path of GPS III

February 25, 2015By

A Lockheed Martin vice president has stated that the first GPS III satellite will likely launch in 2017, not 2016 as had been projected in the most recent update. The company is readying the first satellite for launch availability by the end of 2015, for launch as early as the end of this year, but Space News reports that Mark... read more

ION GNSS+ 2014: Lockheed Martin

October 1, 2014By

The U.S. Air Force’s fleet of GPS Block IIR and IIR-M satellites, manufactured by Lockheed Martin, have reached 200 collective years of operational life. Chip Eschenfelder of Lockheed Martin displays a model of one of the GPS IIR’s at the company’s booth at the ION GNSS+ Conference September 9-12 in Tampa, Florida. read more

GPS III Sources Sought?

August 13, 2014By
GPS-III-Lockheed-O

So, there I was, sipping a cold green tea in the shade on my back deck in the beautiful foothills of the Rocky Mountains in early June, when the phone began to ring off the hook. Upon answering, I was hit with a barrage of questions. Have you seen the GPS III Sources Sought? What should we do? Do you... read more

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PNT Advisory Board Hears Air Force CNAV Plan

March 12, 2014By
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The U.S. National Space-Based Positioning, Navigation, and Timing (PNT) Advisory Board has published the minutes of its December 4–5, 2013, meeting, opening with a quote from Albert Einstein, “We cannot solve our problems with the same thinking we used when we created them,” courtesy of Board Chair Dr. James Schlesinger. Among many other topics addressed, the Board heard a report... read more

DoT Disses DoD’s GPS Chops

January 9, 2014By

The departing Deputy Secretary of Transportation, John Porcari, wrote a letter in the closing days of 2013 opposing the U.S. Air Force’s announced plans to begin broadcasting Civil Navigation (CNAV) message-populated L2C and L5 signals as early as April 2014. Military personnel are incensed over what they see as Porcari’s impugning, when not ignoring, the Air Force 35-year track record... read more

The System: Two More Threes for Space

January 1, 2014By

A December 12 contract modification provided Air Force funding to Lockheed Martin to complete the fifth and sixth GPS III space vehicles (SV 05-06). Lockheeed originally received funding to procure long-lead parts for satellites five through eight (SV 05-08) in February 2013. read more

GPS III and OCX Satellite Launch, Early Orbit Ops Successfully Demonstrated

September 13, 2013By
An artist’s rendering of the GPS III satellite.

Lockheed Martin and Raytheon Company successfully completed the third of five planned launch and early orbit exercises to demonstrate the launch readiness of the world’s most powerful and accurate Global Positioning System (GPS), the U.S. Air Force’s next-generation GPS III satellite and Operational Control System (OCX). Successful completion of Exercise 3, on August 1, was a key milestone demonstrating Raytheon’s... read more