About This Document

GPS receivers are susceptible to disruption and interference. The need for reliable sources of position, navigation, and timing (PNT) information is more important now than ever. 

In support of and collaboration with the Office of the Assistant Secretary for Research and Technology and the U.S. Space Force’s Space and Missile Systems Command, the Volpe Center conducted demonstrations of GPS backup/complementary PNT vendor technologies that might provide a backup in the event of a GPS outage or disruption.

View the infographic to learn more about the demonstrated technologies.