GeoCarta Has Moved

Dec 6, 2007

Latest GPS Satellite Good to Go

The latest GPS Block II satellite launched by the United States on October 17, has been declared fully operational. The announcement came after a successful on-orbit checkout by a combined U.S. Air Force/Lockheed Martin team.

The satellite, designated GPS IIR-17M, is the fourth in a series of eight Block IIR-M satellites built by the defense contractor. These latest satellites feature a a stronger signal, two new military signals, a second civilian channel as well as enhanced encryption and anti- jamming capabilities for the military.

This is the fourth IIR-M satellite in orbit. In total, the U.S. GPS satellite constellation currently numbers 28. A fifth Block IIR-M satellite is scheduled for launch on December 20.