Radionavigation is a global business with a global footprint and the US
Global Positioning System (GPS) has been the jewel in the crown for nearly
a generation. The US has established such a level of trust in its operation of
GPS that governments, service providers, and users worldwide have
included it in their critical infrastructure, safety-critical, and mass-market
applications, and have decommissioned many other aids to navigation. In
making decisions on GPS and other systems, the international community
takes careful note of the US Federal Radionavigation Plan (FRP): ?the
official source of U.S. radionavigation policy and planning?.