IGS KOS1

GNSS CORS reference station KOS1 located in Apeldoorn, Netherlands, operated by the International GNSS Service within the IGS network. Tracks GPS, GLONASS, Galileo, BeiDou, QZSS, and SBAS constellations. Provides real-time RTK corrections and archived data for static post-processing, enabling cm-level positioning accuracy for surveying applications.