# Post processing

This page covers how to process raw observations from a base station, change base station coordinates in Cube-A, and export GCPs for use in LiDARMill or Spatial Explorer. **If your base station was not placed on a known point** during collection of GCPs, your base station's raw observations will need to be post processed in order to obtain a more precise position. A precise base position solution can then be input into Cube-A to shift the location of all GCPs in response to this new base position. 

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If you placed your base station over a known point during GCP collection, you can skip to the end of this section on [exporting GCPs from Cube-A](https://docs.phoenixlidar.com/hardware/stonex-s-900-and-cube-a/post-processing/export-points-from-cube-a)
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