GPS Links

News and information about meteor showers, solar flares, auroras, and near-Earth asteroids. View Website

GPS - Schriever Air Force Base

Operated by the dedicated men and women of the 2nd Space Operations Squadron at Schriever Air Force Base, Colo., GPS is also the world's largest military satellite constellation. View Website

CORS - National Geodetic Survey - NOAA

The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service, manages a network of Continuously Operating Reference Stations (CORS) that provide Global Navigation Satellite System (GNSS) data consisting of carrier phase and code range measurements in support of three dimensional positioning, meteorology, space weather, and geophysical applications throughout the United States, its territories, and a few foreign countries. View Website

TopNext Networks

Real Time, differential GPS corrections (DGPS) are computed and broadcast from each reference station. GIS and mapping customers will be connected automatically to the nearest reference station to maximize accuracy potential. View Website

OPUS - National Geodetic Survey - NOAA

NGS provides the framework for all positioning activities in the Nation. The foundational elements - latitude, longitude, elevation, shoreline information and their changes over time - contribute to informed decision making and impact a wide range of important activities including mapping and charting, navigation, flood risk determination, transportation, land use and ecosystem management. View Website