Speciļ¬cations
RPAS Remotely Piloted Aircraft System
A term used for drones or UAVs, the software and technology they use to
navigate.
RTCM Radio Technical Commission for Maritime Services
An internationalorganisation that standardises transmission protocolsthat
allow for RTK positioning, for example, RTCM 2.x and RTCM 3.x. They also
publish the Ntrip standard.
RTK Real Time Kinematics
A technique used to enhance the accuracy of coordinates calculated from
GNSS signals.
triangle model An approximate representation of a surface, constructed from
connected triangles.
UAS Unmanned Aircraft System
A term used for drones or RPASs, the software and technology they use to
navigate.
UAV Unmanned Aerial Vehicle
Another term for drone.
VRS Virtual Reference Station
A reference station that does not exist on the ground, but instead is created
by combining correction data (delivered over Ntrip) from several real refer-
ence stations. VRS RTK corrections relative to this virtual reference station
can then be made as if it were a real reference station.
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