CCSK (IL)

CCSK is a continuously operating GNSS reference station in Skokie, Illinois, operated by NOAA's National Geodetic Survey as part of the NGS CORS network. It tracks GPS and GLONASS constellations to provide real-time RTK corrections and precise ephemeris data for static post-processing and network adjustments. Surveyors can access raw observations for cm-level positioning accuracy in local and regi