GPS World, the magazine, has covered the global positioning industry since 1989. Our website, gpsworld.com, began providing that same coverage in 1998, with news as it happens. This is GPS World. But the magazine has never limited itself to coverage of the U.S. Global Positioning System. We have also chronicled the development of GLONASS and Galileo, WAAS, LAAS, NDGPS, EGNOS, private correction services, MSAS, QZSS, Beidou, GAGAN and GRAS. In addition to this business of global navigation satellite systems, we examine many fellow travelers, the technologies that GPS has taken along for the ride in its efforts to achieve greater accuracy, availability, integrity and robustness. We’re talking inertial sensors, LORAN-C, lasers, lidar, electronic compasses, cellular signal positioning, video signal positioning, odometers, wheel speed sensors, ultra wideband, RFID, Bluetooth, DSRC and more.

Official U.S. Government information about the Global Positioning System (GPS) and related topics. GPS.gov is maintained by the National Coordination Office for Space-Based Positioning, Navigation, and Timing. The Global Positioning System (GPS) is a U.S.-owned utility that provides users with positioning, navigation, and timing (PNT) services. This system consists of three segments: the space segment, the control segment, and the user segment. The U.S. Air Force develops, maintains, and operates the space and control segments.

Welcome to the USCG Navigation Center! Here you'll find tons of navigation and maritime safety information, including: Nationwide Differential GPS (NDGPS), Nationwide AIS (NAIS), Local Notice to Mariners, Light Lists, LORAN-C Archives, Maritime Communications, MF & HF Channel Information, VHF Channels & Freqs, GMDSS and Search and Rescue Areas, NAVRULES, Nav Pubs and Documents, Vessel Traffic Services, and much more.