A new Government Accountability Office report suggests that more delays are likely for the GPS next-generation operational control system, a key part of the Air Force's efforts to modernize GPS.

Satellite navigation boxes using the global positioning system are no longer the preserve of luxury car owners in Europe. Now you see them in the humblest vehicles on the Continent’s highways.

After 27 months of intense research, the CALIBRA project ended successfully in February 2015, with the project team devising solutions to tackle the effects of perturbations typical of the Brazilian ...