Technical guidelines Guidelines for the Coordination of the SIRGAS Continuously Operating Network (SIRGAS-CON) Guidelines for the installation, operation and registration of SIRGAS-CON stationsGuidelines for SIRGAS Analysis Centers Guidelines for IHRF station selection Guidelines for performing gravimetric measurements around IHRF stations Recommendations IGS site guidelines Monumentation of permanent GNSS stations ? UNAVCO Physical Site Specifications: Geodetic Site Monumentation (W.L. Combrinck and M. Schmidt) NOAA/NGS Guidelines for establishing and operating CORS JOIN COURSE