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Global GNSS
Correction Service

TopNETlive is a real-time GNSS correction service delivering high quality data to GNSS receivers used for surveying, construction, GIS, mapping, OEM, system integrators and agricultural applications on a worldwide scale. Fully interoperable with all makes of network capable rovers, subscriptions are made easily available through the TopNETlive website. Topcon Positioning Group operates and monitors all TopNETlive networks. Topcon's geodetic specialists and professional standards ensure high quality correction data is globally delivered to each GNSS receiver.

For correction service information, please visit:




  • Geopositioning 
  • Construction 
  • Agriculture 
  • Mapping 
  • Utilities 
  • Mining 
  • Forensics 
  • Forestry 
  • OEM Manufacturing 




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