What is it?
Trimble’s Real Time eXtended (RTX) correction service is a global GNSS correction source used to attain precise GNSS positioning. It operates the same as using a local base station, or Virtual Reference Station (VRS), to reduce the errors in GNSS positioning. Without corrections, a GNSS rover is only accurate to about 16 feet +/-. With corrections, GNSS rover positions are accurate to 0.02 to 0.06 feet.