Upgrade of Global Positioning System With 4th Launch of Modern Satellite

A major upgrade of the GPS satellite navigation system is underway, with aging GPS satellites being replaced with the latest generation, having more powerful capabilities. The U.S. Air Force launched the fourth of the new version GPS IIF satellite this week, which offers improved navigational accuracy and anti-jamming resistance, along with a stronger military signal and longer design life.

The 12 IIF satellites on order are manufactured by Boeing, the prime GPS contractor since the first satellite launched in 1978, having made 41 of the 63 GPS satellites sent into orbit to date. Block IIF GPS satellites are expected to operate for twelve years, broadcasting signals at three different frequencies, including the L5 “Safety of Life” signal for civil aviation.

The launch, aboard a United Launch Alliance Atlas V rocket, lifted off from Cape Canaveral Air Force Station, Fla. and took about three hours and 25 minutes. 30 minutes later, Boeing personnel in El Segundo confirmed that the satellite was performing as expected.

The first three GPS IIF satellites, launched in 2010, 2011 and 2012, are performing well. Of the remaining eight, Boeing will complete three this year, while five others are ready for call-up and launch as needed, the company said in a release. The next GPS launch is currently scheduled for October this year, with a Delta IV lifting GPS IIF-5.