GNSS and RTK basics

• Autonomous GNSS

• SBAS

• DGPS/DGNSS

• RTK

  • Carrier phase initialization

  • Update rate and latency

  • Data link

  • Moving baseline RTK positioning

  • Critical factors affecting RTK accuracy

• RTK, Trimble RTX, Trimble xFill, and Trimble ProPoint

• Interference detection

• Antenna phase centers

To understand how to set up Trimble GNSS and inertial systems, this section describes the basics of the different protocols, various terminologies, and concepts that are used.