CHI4 (AK)

CHI4 is a continuously operating GNSS reference station operated by NOAA National Geodetic Survey in the Unorganized Borough, US, tracking GPS and GLONASS constellations. Surveyors can utilize this NGS_CORS station for real-time kinematic (RTK) positioning, post-processed static surveys, and network-based corrections to achieve centimeter-level accuracy for mapping, control surveys, and geospatial