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| My first two guesses would be differential satellite jump or terrain compensation issues.
For the first one, check your DGPS settings. Ideally you're only going to be running off one differential satellite. If you're running on Auto it may be getting equally strong signals from two correction satellites. So for a while you run on satellite A, then you move to satellite B, back to A, B, A, etc on and off during the day. Each satellite will give you a consistent line but the line from A and B may be off a couple feet from eachother.
For the second, keep an eye on what your roll, pitch, and yaw are doing while it happens. If they are stuck at a constant value it means your terrain compensation is acting up. Check and clean power & ground to the node, and potentially look at sending it for repair if you aren't able to resolve. | |
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