GNSS Caster and NTRIP Caster: how the terms relate
“GNSS caster” describes the function: distributing GNSS correction data to users. “NTRIP Caster” identifies the standard Internet transport architecture commonly used to provide that function. RTCM is typically the correction-message format carried through the service.
If you are looking for XYZRVB's production correction-distribution service, see the GNSS NTRIP Caster for RTK networks. That page is the main product and deployment reference.
From reference station to RTK rover
A reference station observes GNSS signals at known coordinates and produces correction data. The caster receives the stream, publishes it under a mountpoint and forwards it to authenticated rovers. The rover combines those corrections with its own observations to compute its RTK solution.
The caster therefore does not replace the reference receiver or rover positioning engine. Its job is reliable transport, stream discovery, access control and operational continuity.
What to evaluate in a GNSS caster
Check NTRIP compatibility, RTCM integrity, mountpoint management, source and rover authentication, session limits, reconnection behavior, monitoring and clear event reporting. For operational monitoring, see the GNSS Control Center.