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Differential correction error

  • 1.  Differential correction error

    Posted 10-16-2025 13:14
      |   view attached

    I have a Geo7X to collect data with and I'm using the Pathfinder Office to correct the data once I'm in the office.

    I've hd this set up for years and it's been working fine. I recently collected some points, transfered the data to my PC and tried the Differential correction. During the Differentiall correction wizard I am getting the following message " Unable to extract base data from [file location/name].

    I went back out today to try to collect some points just to see what would happen. The newly collected points are giving me the same error.

    Does anyone know why I am getting this message?

    I don't know if its a problem with the Geo7x, the base that I'm trying to D/L the data from or something else.



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    Dave Burns
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  • 2.  RE: Differential correction error

    Posted 10-16-2025 13:42

    Due to the US Government Shutdown, access to the NGS CORS base station network has been removed for all users. This means applications like GPS Pathfinder Office, Terra Office, TBC, and Trimble Offline GNSS Correction services will not be able to download base station data from the CORS network or the NPS network. Users in some parts of the US should still be able to access State networks as an alternative:

    Alabama DOT
    Florida DOT
    Indiana DOT
    Iowa DOT
    Kentucky CORS
    Minnesota DOT
    New York DOT
    Ohio DOT
    West Virginia DOT
    Wisconsin DOT

    For Pathfinder Office, Terra Office, and TBC users will be able to select one of the networks above, or wait to process their data until access to NGS CORS is restored.



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    Ryan Scott
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  • 3.  RE: Differential correction error

    Posted 10-17-2025 09:35

    The CORS files are still being logged at https://noaa-cors-pds.s3.amazonaws.com/index.html#rinex/. If one was so inclined, you can manually download the observation files and the nav files by knowing the 4 character base designation, Julian date, letter corresponding to the GMT hour. Nav file will be in the Julian date folder named brdc "julian date" 0.YYn.gz



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    Veronica Sew
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  • 4.  RE: Differential correction error

    Posted 30 days ago

    I've been using the local WV DOT base.

    I use an old "SSF" file and it all worked as normal.

    I don't believe my error is because of the goverment shutdown because I am able to correct an older file and the errior message I am getting is saying it's unable to extract base data from the file name I am trying to correct.

    I am also having troubles with the rangerinder on my Trimble. I'm starting to think there is something wrong with my Trimble. I'm going to start my search for a new unit. This Geo7X is about 10 years old. Any reccomendations on a replacement for it?



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    Dave Burns
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