FERN (AZ)

FERN is a dual-frequency GNSS CORS reference station operated by NOAA's National Geodetic Survey in Coconino County, Arizona, tracking GPS and GLONASS constellations. Surveyors can utilize this station for real-time kinematic (RTK) positioning, network RTK solutions, and static post-processing applications requiring centimeter-level accuracy. The station provides continuous carrier-phase and pseud