Good to know, what the technician is actually talking about

 
Baseline

The distance between a selected RTK base station and a RTK Rover in kilometres.
BeiDou
Chinese satellite system
Galileo
European satellite system
GPS / GLONASS

GPS is the US-American Global Positioning System via satellites and while GLONASS is the Russian equivalent. Receivers, such as the RGS 325, use GPS satellites, as well as GLONASS satellites, in order to increase the reliability of the correction signal and to reduce the risk of signal shading.
 
NTRIP

Is the standardised method, which is used to transmit RTK correction data via the Internet to rovers and the abbreviation stands for Networked Transport of RTCM via Internet Protocol.
QZSS
Japanese satellite system
Rover

An automatically steerable agricultural vehicle or equipment, which uses a RTK compatible GPS receiver.
RTCM3

Is the file format used for the transmission of RTK correction data and the abbreviation stands for Radio Technical Commission for Maritime Services 3.
RTK

The abbreviaton stands for Real-Time Kinematic and describes a method of high-precision positioning through satellites and a reference station.
 
RTK base station

Is the reference station which transmitts the required RTK correction data to registered Rovers via mobile communication networks.

RTK CLUE Cluster

Single RTK base stations are connected to an individual group of reference stations, the so-called RTK CLUE Clusters, which cover an individual area.