KAR4 (IL)

KAR4 is a continuously operating GNSS reference station in Champaign, Illinois, operated by NOAA's National Geodetic Survey as part of the NGS CORS network. The station tracks GPS and GLONASS constellations, providing real-time RTK corrections for positioning surveys and enabling static post-processing for high-accuracy geodetic work. Surveyors can utilize KAR4 data for centimeter-level accuracy i