GISA (CA)

GISA is a continuously operating reference station in Redlands, California, operated by NOAA's National Geodetic Survey as part of the NGS CORS network. It tracks GPS and GLONASS constellations, providing real-time RTK corrections and archival data for static post-processing. Surveyors can use GISA for high-accuracy positioning, network adjustments, and multi-constellation baseline solutions.