No audio available for this content. The GPS Directorate has approved a change to the Navstar GPS Control Segment to User Support Community Interfaces ICD-GPS-240 and ICD-GPS-870, reports the U.S.

A joint U.S. Air Force/Lockheed Martin [NYSE: LMT] team announced today that the first modernized Global Positioning System (GPS) satellite has been declared fully operational for GPS users around the ...

No audio available for this content. The U.S. Coast Guard has issued a Notice Advisory to Navstar Users (NANU) detailing the changes to the constellation now that the second GPS III satellite has ...

An upgraded Global Positioning System (GPS) satellite built by Lockheed Martin for the U.S. Air Force, was successfully launched today from Cape Canaveral. The satellite features significant ...

The signals broadcast by Navstar GPS and Galileo are not straightforward. The GPS legacy signals, broadcast by its existing orbiting blocks, I, II, IIA and IIR are three signals on two frequencies, L1 ...