Rigorous Geodetic Positioning in the Americas
Neil D. Weston, Tomás Soler · 2012
NOAA‟s National Geodetic Survey developed and has operated the Online Positioning User Service (OPUS) since March 2001. This web-based tool provides accurate, reliable and consistent geodetic-quality coordinates in a global reference frame from GNSS data collected by a single, multi-frequency receiver. The original version of OPUS was primarily optimized to accept datasets from two to 48 hours in duration that were observed from any location in