[Qgis-user] Trimble GeoXT 2005 Accuracy

[kirk]

That is the limitation of the unit you have. Without using differential correction or real time kinematic techniques, that is about as good as it gets. You can improve your position a bit by keeping the unit static and averaging the 1 hz position data for at least 2 minutes. This will give you an average of >120 observations.. A clear view of the sky we also help improve the accuracy. For post processing work, you will need  unit that records raw rinex format data which ghe garmin units typically do not.Kirk Schmidt Sent from my Galaxy
-------- Original message --------From: Springfield Harrison <stellargps at gmail.com> Date: 2021-03-06  4:35 a.m.  (GMT-04:00) To: qgis-user <qgis-user at lists.osgeo.org> Subject: [Qgis-user] Trimble GeoXT 2005 Accuracy 
    Hello All,
    I recently acquired a Trimble GeoXT 2005 Series and am puzzled by
      the results it produces:
    
      Compared to a variety of "known" points, it consistently
        records positions that appear to be in error by 1.2 - 1.5 m NW
        from the known point.  
      
      Points are collected and then mapped in QGIS as NAD83, UTM
        Zone 10 N.  
      
      The known points include property survey pins, Government
        control survey monuments, Total Station survey points derived
        from the above, other GPS results (Trimble ProXRS) and
        identifiable points on orthophotos.  
      
      I'm using SBAS correction in the GeoXT.
    
    It appears to be adding a consistent offset to the GPS result
      although no offset has been set in TerraSync.
    
    Many thanks for any thoughts on this situation . . . . .
    
    -----
Cheers, Springfield Harrison
    
    
  

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20210306/f7ba81cb/attachment.html>