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RTK Setup

Written by Max GardenswartzUpdated 2026-11-10Autonomy Park

At a glance

A Homebrew gets RTK corrections automatically once the ground station is on, homebrew_docker is set up, and the parameters are set.

RTK corrections make GPS position centimeter-level accurate, allowing much better precisse handling and repeatability of experiments. We require RTK to guarantee that altitude estimation is accurate enough to prevent collisions with the net. A ground station at a known position sends corrections to the robot, which uses them to remove the GPS error it shares with the ground station.

Start the Homebrew Outdoors

Start the Homebrew outdoors, never indoors.

Follow these in order. After them, RTK works.

  1. Watch the Homebrew setup video.
  2. Follow the instructions in homebrew_docker. It contains the NTRIP client that takes corrections from the RTKLib caster. Use the RTKLib caster, never the RS3's embedded caster.
  3. Follow RTK Setup so the ground station is on.
  4. Check that the parameters are set as described in PX4 Configuration.

To see whether each Homebrew has homebrew_docker set up, see the table Status of Each Homebrew.