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SPS882 Position error

  • 1.  SPS882 Position error

    Posted 08-17-2020 20:17
    I'm having a issue with my SPS882 receivers (I have 2 of them with the same issue).
    The problem occurs in Trimble Access (2016) & SCS900 (v2.91) & SCS900 (v 3+).
    I can shoot a point, select that point as stakeout and it shows that i am on the point.
    I move away from the point and stake back to it but this time face 180° in the opposite direction as when I shot it and it shows me to be between 0.20' to 0.40' off the point.
    If I turn back around and face the direction as when I shot the point it will be back within 0.02' to 0.05'.
    It does this in both programs and using 2 different SPS882 receivers.
    I am using a VRS setup with that our local municipality operates which is also a CORS station.
    I have a SPS985 receiver and this issue doesn't occur.


  • 2.  Re: SPS882 Position error

    Posted 08-18-2020 04:01

    SPS882 is a older model that tracks just GPS and optionally Glonass. This just could be the issue of tracking the satellites and updating firmware (if it is even possible). Also, you can not expect to get survey accuracy with the GPS (even on a local base you are from 2 to 4 cm in 2D).