To perform an accurate RTK survey, you usually need a rover and a base that transmits the corrections in real-time. You can either use your own base or a remote one using a technology called NTRIP.
The Networked Transport of RTCM via Internet Protocol or NTRIP network was developed by the German Federal Agency for Cartography and Geodesy in 2004. NTRIP allows your rover to accept corrections over the Internet with no need for the second local receiver acting as a base.
NTRIP includes three main components of the system: base, caster, and client’s rover. Usually, in this case, there’s a stationary Continuously Operating Reference Station or CORS. The data is then sent to the NTRIP caster, where it is retransmitted through the Internet port to the client rover connected via a particular port and authorized.
Eventually, when using NTRIP, you receive all these corrections via a cellular modem installed in your rover.
To get access to the NTRIP network, you need to contact your local NTRIP service to create an account. Some of the NTRIP networks are run by states, some are free of charge, some of them are private and are pretty costly when it comes to the subscription fees.
We have our own NTRIP caster—it, you have to get credentials and enter them in your rover. It takes just a few steps to register and acquire the data for your account. The service allows working free of charge until 31 December 2021 and you can register here.
Once you’re registered, you’ll get a approval email with parameters Domain or IP address and port to access and get authorized by the network. You’ll also need a username and password to log into the network.
Once you’ve completed the registration, you can use your credentials to connect your rover to the NTRIP network and receive connections.