Poor accuracy

Problem

Issues with data quality, RMS values reported in POSPac may be high.

Solution

  • Check the base station antenna type and coordinates (frame + epoch).
  • Check the antenna type used.
  • Check the original lever-arms and orientations were not changed.
  • Check DMI/GAMS lever-arms (disable for test processing to check results).
  • Check start/stop time in relation to static logging and initialization method.
  • Make sure you are using the best possible processing mode (for example, Single Base).
  • Make sure the base station is within 20 km (for Single Base).
  • Use the proper Multipath setting.

At least 95% of the SNR for L1 should be within 40 - 50 dB. At least 5 satellites need to be available for ambiguity resolution.

Related Products

POSPac MMS

Support Reference

None

Last modified

September 2020