WELK is a GNSS continuously operating reference station (CORS) located in Welkom, South Africa, owned, maintained and operated by TrigNet NGI (National Geospatial Information, http://www.ngi.gov.za).
WELK is a GNSS continuously operating reference station (CORS) located in Welkom, South Africa, owned, maintained and operated by TrigNet NGI (National Geospatial Information, http://www.ngi.gov.za).