Our widespread reliance on a vulnerable technology should be a wake-up call. A single sustained outage could cost the U.S.

The pilots flying into Denver International Airport could tell something was wrong. In urgent calls to air traffic controllers, they reported that the Global Positioning System they used to navigate ...

NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of ...

Abstract: The Global Positioning System (GPS) has greatly increased efficiency and effectiveness of multiple industries that leverage GPS signals for Positioning, Navigation, and Timing (PNT). The ...

Global Navigation Satellite System (GNSS) positioning techniques have evolved significantly over recent decades, spanning from traditional single-frequency methods to advanced multi-constellation and ...

Global Navigation Satellite Systems (GNSS) have revolutionised location-based services by providing positioning information through satellite signals. In urban environments, however, positioning ...