RTK correction delivery
A base station or network engine produces correction data, commonly encoded as RTCM. A GNSS NTRIP Caster distributes those streams over the Internet to authenticated RTK rovers. The rover combines the correction stream with its own carrier-phase observations and attempts to resolve integer ambiguities.
For a local RTK service, one reference station and an NTRIP Caster may be sufficient. NRTK services combine several stations to model spatial errors and deliver network products such as VRS, MAC or FKP.
Coverage and baseline distance
There is no universal maximum RTK baseline. Atmospheric conditions, station density, frequencies, constellations, terrain, communications and the required accuracy all matter. A rover that remains Float should be checked for correction age, baseline distance, sky visibility, multipath, antenna setup and message compatibility.
Operate the network as a service
Availability is more than a successful TCP connection. Operators should monitor reference-station activity, RTCM freshness, rover sessions, GGA positions, RTK status, interruptions and recovery. XYZRVB provides these functions through the GNSS Control Center and GNSS monitoring pages.