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How do you determine standard deviations of network points?

  • 1.  How do you determine standard deviations of network points?

    Posted 01-23-2020 16:48

    Hello, 

     

    I recently processed GPS data at 11 points in network mode using Trimble Business Center.  I was able to export the points to obtain their coordinates.  What I have not been able to obtain is the standard deviations of the coordinates for each point.  Does anyone know how to get the standard deviations?  I need to know the accuracy of my points.  When I open the report, it gives me the standard deviations according to each baseline, but not the final standard deviations of each point.  Thanks in advance.

     

    Wes  



  • 2.  Re: How do you determine standard deviations of network points?

    Posted 03-11-2020 08:27

    Did you perform a least squares adjustment?



  • 3.  Re: How do you determine standard deviations of network points?

    Posted 03-12-2020 05:16

    I think you need to select the relevant points, then right click on the selection and select "Point derivation report".

    This normally shows how each point was calculated and how it compares with other data related to that point.



  • 4.  Re: How do you determine standard deviations of network points?

    Posted 03-12-2020 05:49

    Essentially that report only shows you comparisons between values, but not the standard deviations Wes is asking for. He must perform a least squares adjustment to compute that.