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RACELOGIC Support Centre

Proving positional accuracy improvements using a Base Station

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It is possible to test and demonstrate the positional accuracy benefits of a Base Stations with a simple static test.

Part 1:

  • Setup the Base Stations in a suitable location, no trees or buildings within a minimum 100 m radius
  • Setup the VBOX in the same suitable location either using a car as a ground plane or using a survey grade style ground plane antenna.
  • Use the following settings:
    • DGPS enabled (ensure the correct mode 40, 20, 2 cm)
    • 1 Hz logging
    • log continuously
  • Ensure the VBOX is receiving and using the corrections, check a DGPS live window in VBOXTools.
  • Leave the VBOX logging for a suitable period, for example 24 hours


Part 2:

  • Setup the VBOX in the same location again with these settings:
    • DGPS disabled
    • 1 Hz logging
    • log continuously
  • Leave the VBOX logging for a suitable period, for example 24 hours

It is then possible to compare plots of the position of each sample in the two logged files. In the VBOXTools graph screen, the Map view should give a good indication of the accuracy of each system. More indepth analysis can be performed using special software from Racelogic, designed to calculate the 95 % CEP value of logged files.
 

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