Classifications, standards, and specifications for GNSS geodetic control surveys using OPUS Projects

This publication provides classification, standards, and specifications for GNSS geodetic control surveys that use Global Navigation Satellite Systems (GNSS) and that will be submitted to NGS using OPUS Projects for review and publication. This publication supplements Standards and Specifications for Geodetic Control Networks issued September 1984 (Bossler 1984). This publication replaces NOAA Technical Memorandum NOS NGS 58 Guidelines for Establishing GPS-Derived Ellipsoid Heights, (Standards: 2 cm and 5 cm), Version 4.3 (Zilkoski et al. 1997) and also replaces NOAA Technical Memorandum NOS NGS 59 Guidelines for Establishing GPS-Derived Orthometric Heights (Zilkoski et al. 2008).