NTRIP Client

ROS 2 package for publishing RTCM correction data from an NTRIP server.

Publishers

Topic	Type	Description
/rtcm	rtcm_msgs/msg/Message	RTCM Correction data

Parameters

Parameter	Type	Values	Runtime R/W	Description
use_https	bool	true/false	read-only	HTTPS will be used if set true.
host	string		read-only	NTRIP sever hostname
port	string	2101/2102	read-only	NTRIP server port
mountpoint	string		read-only	Mountpoint to connect
username	string		read-only	Login credentials for the NTRIP subscription
password	string		read-only	Login credentials for the NTRIP subscription

RTK Correction Services

RTK (Real-Time Kinematic) correction service is a technique used to enhance the precision of position data derived from satellite-based positioning systems such as GPS, GLONASS, Galileo, and BeiDou. RTK achieves centimeter-level accuracy by using corrections transmitted from a network of ground-based reference stations to a receiver in real time.

Here is a free RTK correction service that you can use with the NTRIP client.

RTK2go

RTK2go is a community NTRIP Caster that provides RTK correction service for free. To use it, select a mountpoint near your location. You can find the list of available mountpoints here. Click on view-all to view mountpoints on the map.

Once you have the mountpoint you would like to connect to, add that to the config file as shown below.

ntrip_client:
  ros__parameters:
    use_https: false
    host: rtk2go.com
    port: 2101
    mountpoint: Prittlbach  # Add your mointpoint here
    username: "noname"
    password: "password"