Leica Geosystems Leica mojoXact Plus - Manual (Page 163)

Leica mojoXact Plus, Glossary of Terms 163
RTCM
Radio Technical Commission for Maritime Services.
RTCM3 is an RTK correction protocol.
RTK
Real Time Kinematic. A term used to describe the
procedure of resolving the phase ambiguity at the
GPS receiver, so that the need for post-processing is
removed.