Browse this GPS navigation directory for information about GPS - Global Positioning System - navigation solution providers in the USA. The photo on this page depicts a GPS navigation system.
Global positioning system (GPS) units pick up signals from GPS satellites to calculate the latitude and longitude of the user. Hand-held units are convenient for cyclists, hikers, mountain climbers, and hunters.
Air Force officials told Congress that global positioning system satellites are vulnerable to attacks from Chinese or Russian missiles or cyber attacks, The Washington Free Beacon reported.
Newsmax. Fri, 16 Mar 2018 14:40:13 EDT.